Standard Industrial Lease Agreement    Tenant:  Advanced Energy Industries, Inc.
Cameron Technology Center (11/25/97)   Square Feet: 19,800 square feet
                                       Lease Commences:  _______________
                                       Lease Expires:  _________________

                                  LEASE AGREEMENT

THIS LEASE AGREEMENT is made and entered into by and between CAMERON 
TECHNOLOGY INVESTORS, LTD., hereinafter referred to as "Landlord", and 
ADVANCED ENERGY INDUSTRIES, INC., hereinafter referred to as "Tenant".

1.  PREMISES AND TERM.  In consideration of the mutual obligations of 
Landlord and Tenant set forth herein, Landlord leases to Tenant and Tenant 
hereby takes from Landlord, certain leased premises situated within the 
County of Travis, State of Texas, and known locally as SUITE 100, BUILDING 2, 
CAMERON TECHNOLOGY CENTER, LOCATED AT 8900 CAMERON ROAD, AUSTIN, TEXAS AND 
CONSISTING OF APPROXIMATELY 19,800 SQUARE FEET OF RENTABLE AREA as more 
particularly described on EXHIBIT "A" attached hereto and incorporated herein 
by reference (THE "PREMISES"), to have and to hold, subject to the term, 
covenants and conditions in this Lease.  The term of this Lease shall 
commence on the COMMENCEMENT DATE as hereinafter set forth and shall end on 
the last day of the month that is SIXTY (60) months after the COMMENCEMENT 
DATE.

         A.  COMMENCEMENT DATE.  The "Commencement Date" shall mean the date 
on which the earlier of the following occurs:  (i) the date Tenant takes 
possession of the Premises for the operation of its business; or (ii) APRIL 
1, 1999. Landlord shall notify Tenant in writing that the Commencement Date 
has occurred. If for any reason the Building shell is not substantially 
complete on FEBRUARY 15, 1999 this Lease and the obligations of Tenant shall 
nonetheless commence and continue in full force and effect and Landlord shall 
have no liability to Tenant; provided, however, if the Building shell is not 
substantially complete for any reason other than omission, delay, or default 
on the part of Tenant or anyone acting under or for Tenant, Tenant may 
terminate this Lease by providing Landlord written notice not later than 
MARCH 1, 1999 and the termination of this Lease shall constitute Tenant's 
sole remedy and shall constitute full settlement of all claims that Tenant 
might otherwise have against Landlord by reason of the Building shell not 
being substantially complete by FEBRUARY 15, 1999.  Landlord shall not be 
liable to Tenant or any third party for any damage, claim, expense or loss, 
actual or consequential, or direct or indirect, resulting from any delay by 
Landlord to deliver the Building shell, except that Landlord shall refund any 
rent or Security Deposit that has been pre-paid by Tenant under this Lease.

2.  BASE RENT, SECURITY DEPOSIT AND ESCROW DEPOSITS.
         A.  BASE RENT.  Tenant agrees to pay to Landlord rent for the 
Premises in advance, without demand, deduction or set off, at the rate of:

     MONTHS 1-12:   FIFTEEN THOUSAND AND SEVENTY-TWO DOLLARS AND 20/XX
                    ($15,072.20) PER MONTH;
     MONTHS 13-24:  FIFTEEN THOUSAND FOUR HUNDRED AND SIXTY-EIGHT DOLLARS AND
                    20/XX ($15,468.20) PER MONTH;
     MONTHS 25-36:  FIFTEEN THOUSAND EIGHT HUNDRED AND SIXTY-FOUR DOLLARS AND
                    20/XX ($15,864.20) PER MONTH;
     MONTHS 37-48:  SIXTEEN THOUSAND TWO HUNDRED AND SIXTY DOLLARS AND 20/XX
                    ($16,260.20) PER MONTH;
     MONTHS 49-60:  SIXTEEN THOUSAND SIX HUNDRED AND FIFTY-SIX DOLLARS AND 20/XX
                    ($16,656.20) PER MONTH,

during the term hereof.  One monthly installment, plus the other monthly 
charges set forth in Paragraph 2C below, shall be due and payable on the date 
hereof, and a like monthly installment shall be due and payable on or before 
the first day of each calendar month succeeding the Commencement Date, except 
that all payments due thereunder for any fractional calendar month shall be 
prorated.

         B. SECURITY DEPOSIT.  In addition, Tenant agrees to deposit with 
Landlord on the date hereof the sum of SEVENTEEN THOUSAND SIX HUNDRED AND 
TWENTY-TWO DOLLARS AND 00/XX ($17,622.00)  which shall be held by Landlord, 
without obligation for interest, as security for the performance of Tenant's 
obligations under this Lease (the "Security Deposit"), it being expressly 
understood and agreed that the Security Deposit is not an advance rental 
deposit or a measure of Landlord's damages in case of Tenant's default.  Upon 
occurrence of an Event of Default, Landlord may use all or part of the 
Security Deposit to pay past due rent or other payments due Landlord under 
this Lease, or the cost of any other damage, injury, expense or liability 
caused by such Event of Default, without prejudice to any other remedy 
provided herein or provided by law.  On demand, Tenant shall pay Landlord the 
amount that will restore the Security Deposit to its original amount.  The 
Security Deposit shall be deemed the property of Landlord, but any remaining 
balance of the Security Deposit shall be returned by Landlord to Tenant when 
all of Tenant's present and future obligations under this Lease have been 
fulfilled.

         C.  ESCROW DEPOSITS.    Without limiting in any way Tenant's other 
obligations under this Lease, Tenant agrees to pay to Landlord its 
Proportionate Share (as defined in this Paragraph 2C below) of (i) Taxes* 
payable by Landlord pursuant to Paragraph 3A below, (ii) the cost of 
utilities payable by Landlord pursuant to Paragraph 8 below, (iii) Landlord's 
cost of maintaining insurance pursuant to Paragraph 9A below and (iv) 
Landlord's cost of maintaining the Premises pursuant to paragraph 5D below 
and any common area charges payable by Tenant in accordance with Paragraph 4 
below (collectively, the "Tenant Costs"). During each month of the term of 
this Lease, on the same day that rent is due hereunder, Tenant shall deposit 
in escrow with Landlord an amount equal to 1/12 of the estimated annual 
amount of Tenant's Proportionate Share of the Tenant Costs.  Tenant 
authorizes Landlord to use the funds deposited with Landlord under this 
Paragraph 2C to pay such Tenant Costs.  The initial monthly escrow payments 
are based upon the estimated amounts for the year in question, and shall be 
increased or decreased annually to reflect the projected actual amount of all 
Tenant Costs.  If the Tenant's total escrow deposits for any calendar year 
are less than Tenant's actual Proportionate Share of the Tenant  Costs for 
such calendar year,  Tenant shall pay the difference to Landlord within ten 
(10) days after demand.  If the total escrow deposits of Tenant for any 
calendar year are more than Tenant's actual Proportionate Share of the Tenant 
Costs for such calendar year, Landlord shall retain such excess and credit it 
against Tenant's escrow deposits next maturing after such determination.  In 
the event the Premises constitute a portion of a multiple occupancy building 
(the "Building"), Tenant's "Proportionate Share" with respect to the 
Building, as used in this Lease, shall mean a fraction, the numerator of 
which is  the gross rentable area contained in the Premises and the 
denominator of which is the gross rentable area contained in the entire 
Building.  In the event the Premises or the Building is part of a project or 
business park owned, managed or leased by Landlord, or an affiliate of 
Landlord (the "Project"), Tenant's "Proportionate Share" of the Project, as 
used in this Lease shall mean a fraction, the numerator of which is the gross 
rentable area contained in the Premises and the denominator of which is the 
gross rentable area contained in all of the buildings (including the 
Building) within the Project.  For the purposes of this Lease, Tenant's 
proportionate share shall be defined initially as SIXTEEN AND SIX-TENTHS 
PERCENT (16.6%).

3.  TAXES.

         A.  REAL PROPERTY TAXES.  Subject to reimbursement under Paragraph 
2C herein, Landlord agrees to pay all taxes,* that accrue against the 
Premises, the Building and /or the land of which the Premises or the Building 
are a part.  If at any time during the term of this Lease, there shall be 
levied, assessed or imposed on Landlord a capital levy or other tax directly 
on the rents received therefrom and /or the land and improvements of which 
the Premises are a part, then all such taxes, assessments, levies or charges, 
or the part thereof so measured or based, shall be deemed to be included 
within the term "Taxes" for the purpose hereof.  The Landlord shall have the 
right to employ a tax consulting firm to attempt to assure a fair tax burden 
on the real property within the applicable taxing jurisdiction.  Tenant 
agrees to pay its Proportionate Share of the cost of such consultant.

         B.  PERSONAL PROPERTY TAXES. Tenant shall be liable for all taxes 
levied or assessed against any personal property or fixtures placed in or on 
the Premises.  If any such taxes are levied or assessed against Landlord or 
Landlord's property (i) Landlord pays the same or (ii) the assessed value of 
Landlord's property is increased by inclusion of such personal property and 
fixtures and Landlord pays the increased taxes, then Tenant shall pay to 
Landlord, upon demand, the amount of such taxes.

4. LANDLORD'S REPAIRS AND MAINTENANCE.

         A.  STRUCTURAL REPAIRS.  Landlord, at its own cost and expense, 
shall maintain the roof, foundation and the structural soundness of the 
exterior walls of the Building in good repair, reasonable wear and tear 
excluded.  The term "walls" as used herein shall not include windows, glass, 
or plate glass, any doors, special store fronts or office entries, and the 
term "foundation" as used herein shall not include loading docks.  Tenant 
shall immediately give Landlord written notice of defect or need for repairs, 
after which Landlord shall have thirty (30) days to commence to 

*  For purposes of this Lease, "Taxes" means all taxes, assessments and
governmental charges (excluding any federal and state income taxes, franchise
taxes, profit taxes and lease taxes, so long as such federal and state income
taxes, franchise taxes, profit taxes or lease taxes are not assessed in lieu of
some or all of the customary ad valorem taxes being assessed against the Project
as of the date of this Lease).

         C.  REASSESSMENTS.  At the reasonable request of Tenant, Landlord 
shall virgorously challenge any increases in Taxes, arising from a 
reassessment of landlord's property or otherwise.

                                                 Landlord's Initials _____

                                                 Tenant's Initials   _____



effect such repairs or cure such defect. In the event a defect occurs that 
seriously jeopardizes the safety of persons occupying the Premises or 
threatens equipment or machinery owned by Tenant within the Premises, and 
Landlord has failed to commence the repairs for such defect within the thirty 
(30) day period outlined above, Tenant shall be permitted to initiate the 
repair and Landlord will be obligated to reimburse Tenant for the actual cost 
of the repair.

         B.  TENANT'S SHARE OF COMMON AREA CHARGES.  Tenant agrees to pay its 
Proportionate Share of the cost of (i) maintenance and/or landscaping 
(including both maintenance and replacement of landscaping) of any property 
that is a part of the Building and/or the Project; and (ii) operating, 
maintaining and repairing any property, facilities or services (including 
without limitation utilities and insurance therefor) provided for the use or 
benefit of Tenant or the common use or benefit of Tenant and other lessees of 
the Project or the Building; and (iii) the reasonable cost of property 
management and supervision which shall be at rates customary of the property 
type and market conditions.

Landlord reserves the right to perform, in whole or in part and without 
notice to Tenant, maintenance, repairs and replacements to the paving, common 
area landscape replacement and maintenance, exterior painting, common sewage 
line plumbing and any other items that are provided for the use or benefit of 
Tenant or the common use or benefit of Tenant and other lessees of the 
Project or the Building;  in which event, Tenant shall be liable for its 
Proportionate Share of the cost and expense of such repair, replacement, 
maintenance and other such items.

5.  TENANT'S REPAIRS.

         A.  MAINTENANCE OF PREMISES AND APPURTENANCES.  Tenant at its own 
cost and expense, shall (i) maintain all parts of the Premises and promptly 
make all necessary repairs and replacements to the Premises (except those for 
which Landlord is expressly responsible hereunder), and (ii) keep the parking 
areas, driveways and alleys surrounding the Premises in a clean and sanitary 
condition. Tenant's obligation to maintain, repair and make replacements to 
the Premises shall cover, but not be limited to, pest control (including 
termites), trash removal and the maintenance repair and replacement of all 
HVAC, electrical, plumbing, sprinkler and other mechanical systems.  For the 
purposes of this Lease, Landlord shall assign all warranties received from 
the general contractor who constructs the Tenant Improvements within the 
Premises and Tenant shall look to the general contractor for warranty on all 
repairs and replacements required within the Premises.

         B.  PARKING.  Tenant and its employees, customers and licensees 
shall have the right to use only its Proportionate share of any parking areas 
that have been designated for such use by Landlord in writing, subject to (i) 
all rules and regulations promulgated by Landlord; and (ii) rights of ingress 
and egress of other lessees.  Landlord shall not be responsible for enforcing 
Tenant's parking rights against any third parties, and Tenant expressly does 
not have the right to tow or obstruct improperly parked vehicles.  Tenant 
agrees not to park on any public streets or private roadways adjacent to or 
in the vicinity of the Premises.  For the purposes of this Lease, Tenant 
shall be allotted a parking ratio of four (4) parking spaces per thousand 
(1,000) square feet of rentable lease area contained within the Premises, 
with such parking ratio not including areas within the truck court that may 
be striped for parking from time to time.

         C.  SYSTEM MAINTENANCE.  Tenant at its own cost and expense, shall 
enter into a regularly scheduled preventative maintenance/service contract 
with a maintenance contractor approved by Landlord for servicing all hot 
water, heating and air conditioning systems and equipment within the 
Premises.  The service contract must include all services suggested by the 
equipment manufacturer in its operations/maintenance manual and must become 
effective within thirty (30) days of the date Tenant takes possession of the 
Premises

6.  ALTERATIONS.  Tenant shall not make any alterations, additions or 
improvements to the Premises without the prior written consent of Landlord, 
which consent shall not be unreasonably withheld or delayed. Tenant, at its 
own cost and expense, may erect such shelves, bins, machinery and trade 
fixtures as it desires, provided that (a) such items do not alter the basic 
character of the Premises or the Building; (b) such items do not overload or 
damage same; (c) such items may be removed without injury to the Premises; 
and (d) the construction, erection or installation thereof complies with all 
applicable governmental laws ordinances, regulations and with Landlord's 
specifications and requirements.  Tenant shall be responsible for compliance 
with The American With Disabilities Act of 1990.  Without implying any 
consent of Landlord thereto, all alterations, additions, improvements and 
partitions erected by Tenant shall be  remain the property of Tenant during 
the term of this Lease.  All shelves, bins machinery and trade fixtures 
installed by Tenant shall be removed on or before the earlier to occur of the 
day of termination or expiration of this Lease or vacating the Premises, at 
which time Tenant shall restore the Premises to their original condition, 
normal wear and tear excepted.  Alterations, installations, removals and 
restorations shall be performed in a good and workmanlike manner so as not to 
damage or alter the primary structure or structural qualities of the Building 
or other improvements situated on the Premises or of which the Premises are a 
part.

7.  SIGNS.  Any signage Tenant desires for the Premises shall be subject to 
Landlord's written approval, which shall not be unreasonably withheld or 
delayed and shall be submitted to Landlord prior to the Commencement Date of 
this Lease. Tenant shall repair and/or replace the Building facia surface to 
which its signs are attached upon Tenant's vacation of the Premises or the 
removal or alteration of its signage.  Tenant shall not, without Landlord' 
prior written consent, (i) make any changes to the exterior of the Premises, 
(ii) install any exterior lights, decorations, balloons, flags, pennants, 
banners or painting, or (iii) erect or install any signs, windows or door 
lettering, placards, decorations or advertising media of any type which can 
be viewed from the exterior of the Premises.  All signs, decorations, 
advertising media, blinds, draperies and other window treatment or bars or 
other security installations visible from outside the Premises shall conform 
in all respects to the criteria established by Landlord or shall be otherwise 
subject to Landlord's prior written consent. For the purposes of this Lease, 
Tenant shall be permitted to use its company logo and colors so long as the 
design, installation and location of the sign is consistent with the 
requirements outlined within Exhibit "E", Sign Criteria.

8.  UTILITIES.  Landlord agrees to provide normal water and electricity 
service to the Premises.  Tenant shall pay for all water, gas, heat, light, 
power, telephone, sewer, sprinkler charges and other utilities and services 
used on or at the Premises, together with any taxes, penalties, surcharges or 
the like pertaining to the Tenant's use of the Premises, and any maintenance 
charges for utilities.  Landlord shall have the right to cause any of said 
services to be separately metered to Tenant, at Tenant's expense.  Tenant 
shall pay its pro rata share, as reasonably determined by Landlord, of all 
charges for jointly metered utilities.  Unless resulting from Landlord's 
negligence or willful misconduct, Landlord shall not be liable for any 
interruption or failure of utility service on the Premises and Tenant shall 
have no rights or claims as a result of any such failure.  In the event water 
is not separately metered to Tenant, Tenant agrees that it will not use water 
and sewer capacity for uses other than normal domestic restroom and kitchen 
usage and Tenant further agrees to reimburse Landlord for the entire amount 
of common water and sewer costs as additional rental if, in fact, Tenant uses 
water or sewer capacity for uses other than normal domestic restroom and 
kitchen uses without first obtaining Landlord's written permission, 
including, but not limited to, the cost for acquiring additional sewer  
capacity to service Tenant's excess sewer use. Furthermore, Tenant agrees in 
such event to install at its own expense a submeter to determine Tenant's 
usage.

9.  INSURANCE.

         A.  LANDLORD'S INSURANCE.  Subject to reimbursement under Paragraph 
2C herein, Landlord shall maintain insurance covering the Building in an 
amount not less than eighty percent (80%) of the "replacement cost" thereof, 
insuring against the perils of fire, lightning, flood, tornado, hail, 
extended coverage, vandalism and malicious mischief.

         B.  TENANT'S INSURANCE.  Tenant, at its own expense, shall maintain 
during the term of this Lease a policy or policies of worker's compensation 
and comprehensive general liability insurance, including personal injury and 
property damage, with contractual liability endorsement, in the amount of 
Five Hundred Thousand Dollars ($500,000.00) for property damage and One 
Million dollars ($1,000,000.00) per occurrence and Two Million Dollars 
($2,000,000.00) in the aggregate for personal injuries or deaths of persons 
occurring in or about the Premises.  Tenant, at its own expense, also shall 
maintain during the term of this Lease, fire and extended coverage insurance 
covering the replacement cost of (i) all alterations, additions, partitions 
and improvements installed or placed on the Premises by Tenant or by Landlord 
on behalf of Tenant and (ii)  all of Tenant's personal property contained 
within the Premises.  Said policies shall (i) name Landlord as an additional 
insured and insure Landlord's contingent liability under or in connection 
with this Lease (except for the worker's compensation policy, which instead 
shall include waiver of subrogation endorsement in favor of Landlord) (ii) be 
insured by an insurance company which is acceptable to Landlord, and (iii) 
provide that said insurance shall not be canceled unless thirty (30) days 
prior written notice has been given to Landlord.  Said policy or policies or 
certificates thereof shall be delivered to Landlord by Tenant on or before 
the Commencement Date and upon each renewal of said insurance.

                                     2           Landlord's Initials _____

                                                 Tenant's Initials   _____



     C.  PROHIBITED USES.  Tenant will not permit the Premises to be used for 
any purpose or in any manner that would (i) void the insurance thereon, (ii) 
increase the insurance risk or cost thereof, or (iii) cause the disallowance 
of any sprinkler credits; including without limitation, use of the Premises 
for the receipt, storage or handling of any product, material or merchandise 
that is explosive or highly inflammable.  If any increase in the cost of any 
insurance on the Premises or the Building is caused by Tenant's use of the 
Premises, or because Tenant vacates the Premises, then Tenant shall pay the 
amount of such increase to Landlord within thirty (30) days of written demand 
therefor.

10.  FIRE AND CASUALTY DAMAGE.

     A.  TOTAL OR SUBSTANTIAL DAMAGE AND DESTRUCTION.  If the Premises or the 
Building should be damaged or destroyed by fire or other peril, Tenant shall 
immediately give written notice to Landlord of such damage or destruction.  
If the Premises or the Building should be totally destroyed by any peril 
covered by the insurance to be provided by Landlord under Paragraph 9A above, 
or if they should be so damaged thereby that, in Landlord's estimation, 
rebuilding or repairs cannot be completed within one hundred and fifty (150) 
days after the date of such damage or after such completion there is not 
enough time remaining under the terms of this Lease to fully amortize such 
rebuilding or repairs, then Landlord shall so notify Tenant in writing and 
this Lease shall terminate and the rent shall be abated during the unexpired 
portion of this Lease, effective upon the date of the occurrence of such 
damage.

     B.  PARTIAL DAMAGE OR DESTRUCTION.  If the Premises or the Building 
should be damaged by any perils covered by the insurance to be provided by 
Landlord under Paragraph 9A above and, in Landlord's estimation, rebuilding 
or repairs can be substantially completed within one hundred fifty (150) days 
after the date of such damage, then this Lease shall not terminate and 
Landlord shall restore the Premises to its previous condition, except that 
Landlord shall not be required to rebuild, repair or replace any part of the 
partitions, fixtures, additions and other improvements that may have been 
constructed, erected or installed in or about the Premises for the benefit of 
or by or for Tenant.  In the event of partial damage to the Premises, rent 
shall abate for the period of reconstruction for the portion of the Premises 
that cannot be occupied due to the casualty.

     C.  LIENHOLDERS RIGHTS IN PROCEEDS.  Notwithstanding anything herein to 
the contrary, in the event the holder of any indebtedness secured by a 
mortgagee or deed of trust covering the Premises requires that the insurance 
proceeds be applied to such indebtedness, then Landlord shall have the right 
to terminate this Lease by delivering written notice of termination to Tenant 
within fifteen (15) days after such requirement is made known to Landlord by 
any such holder, whereupon all rights and obligations hereunder shall cease 
and terminate.

     D.  WAIVER OF SUBROGATION.  Notwithstanding anything in this Lease to 
the contrary, Landlord and Tenant hereby waive and release each other of and 
from any and all rights of recovery, claims, actions or causes of action 
against each other, or their respective agents, officers and employees, for 
any loss or damage that may occur to the Premises, improvements to the 
Building or personal property (Building contents) within the Building and/or 
Premises, for any reason regardless of cause or origin.  Each party to this 
Lease  agrees immediately after execution of this Lease to give written 
notice of the terms of the mutual waivers contained in this subparagraph to 
each insurance company that has issued to such party policies of fire and 
extended coverage insurance and, if necessary, to have the insurance policies 
properly endorsed to provide that the carriers of such policies waive all 
rights of recovery under subrogation or otherwise against the other party.

11.  LIABILITY AND INDEMNIFICATION.  Except for any claims, rights of 
recovery and causes of action that Landlord has released, Tenant shall hold 
Landlord harmless from and defend Landlord against any and all claims or 
liability for any injury or damage (i) to any person or property whatsoever 
occurring in, on or about the Premises or any part thereof, the Building 
and/or about the Premises or any part thereof, the Building and/or common 
areas, the use of which Tenant may have in accordance with this Lease, if 
(and only if) such injury or damage shall be caused in whole or in part by 
the act, gross neglect, fault or willful omission of any duty by Tenant, its 
agents, servant, employees or invitees, (ii) arising from the conduct or 
management of any work done by the Tenant in or about the Premises, (iii) 
arising from transactions of the Tenant, and (iv) all costs, counsel fees, 
expenses and liabilities incurred in connection with any such claim or action 
or proceeding brought thereon.  The provisions of this Paragraph 11 shall 
survive the expiration or termination of this Lease.  Landlord shall not be 
liable in any event for personal injury or loss of Tenant's property caused 
by fire, flood, water leaks, rain, hail, ice, snow, smoke, lightning, wind, 
explosion, interruption of utilities, or other occurrences unless resulting 
from Landlord's acts.  Landlord strongly recommends that Tenant secure 
Tenant's own insurance, in excess of the amounts required elsewhere in this 
Lease, to protect against the above occurrences if Tenant desires additional 
coverage for such risks.  Tenant shall give prompt notice to Landlord of any 
significant accidents involving injury to persons or property. Furthermore, 
Landlord shall not be responsible for lost or stolen personal property, 
equipment, money or jewelry from the Premises or from the public areas of the 
Building or the Project, or for any damages or losses caused by theft, 
burglary, assault, vandalism, or other crimes.  Landlord strongly recommends 
that Tenant provide its own security systems and services and secure Tenant's 
own insurance in excess of the amounts required elsewhere in this Lease, to 
protect against the above occurrences if Tenant desires additional protection 
or coverage for such risks.  Tenant shall give Landlord prompt notice of any 
criminal or suspicious conduct within or about the Premises, the Building or 
the Project, and/or any personal injury or property damage caused thereby.  
Landlord may, but is not obligated to, enter into agreements with third 
parties for the provision of any courtesy patrols or similar services or fire 
protective systems and equipment and, to the extent same is provided in 
Landlord's sole discretion, Landlord shall not be liable to Tenant for any 
damages, costs or expenses which occur for any reason in the event any such 
system or equipment is not properly installed, monitored or maintained or any 
such services are not properly provided, unless resulting from Landlord's 
acts. Landlord shall use reasonable diligence in the maintenance of existing 
lighting, if any, in the parking areas servicing the Premises, and Landlord 
shall not be responsible for additional lighting or any security measures in 
the Project, the Premises or other parking areas. 

12.  USE.  The Premises shall be used only for the purpose of manufacturing, 
sales, research and development, telephone support, design, receiving, 
storing, shipping and selling (other than retail) products, materials and 
merchandise made and/or distributed by Tenant and for such other lawful 
purposes as may be directly incidental thereto.  Outside storage, including 
without limitation storage of trucks and other vehicles, is prohibited 
without Landlord's prior written consent. Tenant shall comply with all 
governmental laws, ordinances and regulations applicable to the use of the 
Premises, and shall promptly comply with all governmental orders and 
directives for the correction, prevention and abatement of nuisances in or 
upon or connected with the Premises, all at Tenant's sole expense.  Tenant 
shall not permit any objectionable or unpleasant odors, smoke, dust, gas, 
noise or vibrations to emanate from the Premises, nor take any other action 
that would constitute a nuisance or would disturb, unreasonably interfere 
with or endanger Landlord or any other lessees of the Building or the Project.
     
13. HAZARDOUS WASTE.  The term "Hazardous Substances," as used in this Lease, 
shall mean pollutants, contaminants, toxic or hazardous wastes, radioactive 
materials or any other substances, the use and/or the removal of which is 
required or the use of which is restricted, prohibited or penalized by any 
"Environmental Law," which term shall mean any federal, state or local 
statute, ordinance, regulation or other law of a governmental or 
quasi-governmental authority relating to pollution or protection of the 
environment or the regulation of the storage or handling of Hazardous 
Substances.  Limited to its actions only, Tenant hereby agrees that: (i) no 
activity will be conducted on the Premises that will produce any Hazardous 
Substance, except for such activities that are part of the ordinary course of 
Tenant's business activities (the "Permitted Activities"), provided said 
Permitted Activities are conducted in accordance with all Environmental Laws 
and have been approved in advance in writing by Landlord, which approval 
shall not be unreasonably withheld or delayed and, in connection therewith, 
Tenant shall be responsible for obtaining any required permits or 
authorizations and paying any fees and providing any testing required by any 
governmental agency; (ii) the Premises will not be used in any manner for the 
storage of any Hazardous Substances, except for the temporary storage of such 
materials that are used in the ordinary course of Tenant's business (the 
"Permitted Materials"), provided such Permitted Materials are properly stored 
in a manner and location meeting all Environmental Laws and have been 
approved in advance in writing by Landlord, which such approval shall not be 
unreasonably withheld or delayed, and, in connection therewith, Tenant shall 
be responsible for obtaining any required permits or authorizations and 
paying any fees and providing any testing required by any governmental 
agency; (iii) no portion of the Premises will be used as a landfill or a 
dump; (iv) Tenant will not install any underground tanks of any type; (v) 
Tenant will not allow any surface or subsurface conditions to exist or come 
into existence that constitute, or with the passage of time may constitute, a 
public or private nuisance; (vi) Tenant will not permit any Hazardous 
Substances to be brought onto the Premises, except for the Permitted 
Materials, and if so brought or found located thereon, the same shall be 
immediately removed, with proper disposal, and all required clean-up 
procedures shall be diligently undertaken by Tenant at its sole cost pursuant 
to all Environmental Laws. Upon prior notice during normal business hours, 
Landlord and Landlord's representatives shall have the right but not the 
obligation to enter the Premises for the purpose of inspecting the storage, 
use and disposal of any Permitted Materials to ensure compliance with all 
Environmental Laws.  Should it be determined, in Landlord's sole opinion, 
that any Permitted Materials are being improperly stored, used or disposed 
of, then Tenant shall immediately take such corrective action as requested by 
Landlord.  Should Tenant fail to take such corrective action within 
twenty-four (24) hours, Landlord shall have the right to perform such work 
and Tenant shall reimburse Landlord, on demand, for any

                                     3           Landlord's Initials _____

                                                 Tenant's Initials   _____


and all costs associated with said work.  If at any time during or after the 
term of this Lease, the Premises is found to be contaminated with Hazardous 
Materials, Tenant shall diligently institute proper and thorough clean-up 
procedures, at Tenant's sole cost.  TENANT AGREES TO INDEMNIFY AND HOLD 
LANDLORD HARMLESS FROM ALL CLAIMS, DEMANDS, ACTIONS, LIABILITIES, COSTS, 
EXPENSES, DAMAGES, PENALTIES AND OBLIGATIONS OF ANY NATURE ARISING FROM OR AS 
A RESULT OF ANY CONTAMINATION OF THE PREMISES WITH HAZARDOUS SUBSTANCES BY 
TENANT, OR OTHERWISE ARISING FROM THE USE OF THE PREMISES BY TENANT.  THE 
FOREGOING INDEMNIFICATION AND THE RESPONSIBILITIES OF TENANT SHALL SURVIVE 
THE TERMINATION OR EXPIRATION OF THIS LEASE. 

14.  INSPECTION.  Landlord's agents and representatives, upon notice to 
Tenant, shall have the right to enter the Premises at any reasonable time 
during business hours (or at any time in case of emergency) (i) to inspect 
the Premises; (ii) to make such repairs as may be required or permitted 
pursuant to this Lease; and/or (iii) during the last six (6) months of the 
Lease term, for the purpose of showing the Premises.  In addition, Landlord 
shall have the right to erect a suitable sign on the Premises stating the 
Premises are available for Lease.  Tenant shall notify Landlord in writing at 
least thirty (30) days prior to vacating the Premises and shall arrange to 
meet with Landlord for a joint inspection of the Premises prior to vacating.  
If Tenant fails to give such notice or to arrange for such inspection, then 
Landlord's inspection of the Premises shall be deemed correct for the purpose 
of determining Tenant's responsibility for repairs and restoration of the 
Premises.

15. ASSIGNMENT AND SUBLETTING.  Tenant shall not have the right to sublet, 
assign or otherwise transfer or encumber this Lease, or any interest therein, 
without the prior written consent of Landlord, which consent shall not be 
unreasonably withheld or delayed.  Any attempted assignment, subletting, 
transfer of encumbrance by Tenant in violation of the terms and covenants of 
this paragraph shall be void.  Any assignee, sublessee or transferee of 
Tenant's interest in this Lease (all such assignees, sublessees and 
transferees being hereinafter referred to as "Transferees"), by assuming 
Tenant's obligations hereunder, shall assume liability to Landlord for all 
amounts paid to persons other than Landlord by such Transferees to which 
Landlord is entitled or otherwise in contravention of this Paragraph 15.  No 
assignment, subletting or other transfer, whether or not consented to by 
Landlord or permitted hereunder, shall relieve Tenant of its liability under 
this Lease.  If an Event of Default occurs while the Premises or any part 
thereof are assigned or sublet, then Landlord, in addition to any other 
remedies herein provided or provided by law, may collect directly from such 
Transferee all rents payable to the Tenant and apply such rent against any 
sums due Landlord hereunder.  No such collection shall be construed to 
constitute a novation or a release of Tenant from the further performance of 
Tenant's obligations hereunder.  If Landlord consents to any subletting or 
assignment by Tenant as hereinabove provided and any category of rent 
subsequently received by Tenant under any such sublease is in excess of the 
same category of rent payable under this Lease, or any additional 
consideration is paid to Tenant by the assignee under any such assignment, 
then Landlord may, at its option, declare such excess rents under any 
sublease or such additional consideration for any assignment to be due and 
payable by Tenant to Landlord as additional rent hereunder.  The following 
shall additionally constitute an assignment of this Lease by Tenant for the 
purposes of this Paragraph 15.: (i) if Tenant is a corporation, any merger, 
consolidation, dissolution or liquidation, or any change in ownership or 
power to vote of thirty percent (30%) or more of Tenant's outstanding voting 
stock; (ii) if Tenant is a partnership, joint venture or other entity, any 
liquidation, dissolution or transfer of ownership of any interests totaling 
thirty percent (30%) or more of the total interests in such entity;  (iii) 
the sale, transfer, exchange, liquidation or other distribution of more than 
thirty percent (30%) of Tenant's assets, other than this Lease;   or (iv) the 
mortgage, pledge, hypothecation or other encumbrance of or grant of a 
security interest by Tenant in this Lease, or of any of Tenant's rights 
hereunder.   For the purposes of this Lease, the merger or sale of a division 
owned by Tenant shall not constitute an assignment under this Lease.          
                           

16. CONDEMNATION.   If more than eighty percent (80%) of the Premises or the 
required parking and access related thereto, are taken for any public or 
quasi-public use under governmental law, ordinance or regulation, or by right 
of eminent domain or private purchase in lieu thereof, and the taking 
prevents or materially interferes with the use of the remainder of the 
Premises for the purpose for which they were leased to Tenant, then this 
Lease shall terminate and the rent shall be abated during the unexpired 
portion of this Lease, effective on the date of such taking.  If less than 
eighty percent (80%) of the Premises are taken  for any public  or  
quasi-public  use  under  any governmental law, ordinance or regulation, or 
by right of eminent domain or private purchase in lieu thereof, or if the 
taking does not prevent or materially  interfere with the use of the 
remainder of the Premises, parking, access and loading for the purpose for 
which they were leased to Tenant, then this  Lease  shall  not  terminate, 
but the rent payable hereunder during the unexpired portion of this Lease 
shall be reduced to such extent  as  may  be fair and  reasonable under all 
of the circumstances. All compensation awarded in connection with or as a 
result of any of the foregoing proceedings shall be the property of Landlord, 
and Tenant hereby assigns any interest in any such award to Landlord: 
provided, however, Landlord shall have no interest in any award made to 
Tenant for loss of business or goodwill or for the taking of Tenant's trade 
fixtures and personal property, if a separate award for such items is made to 
Tenant.

17. HOLDING OVER.   At the termination of this Lease by its expiration or 
otherwise, Tenant shall immediately deliver possession of the Premises to 
Landlord with all repairs and maintenance required herein to be performed by 
Tenant completed. If, for any reason, Tenant retains possession of the 
Premises after the expiration or termination of this Lease, unless the 
parties hereto otherwise agree in writing, such possession shall be deemed to 
be a tenancy at will only, and all other terms and provisions of this Lease 
shall be applicable during such period, except that Tenant shall pay Landlord 
from time to time, upon demand, as rental for the period of such possession, 
an amount equal to one and one-half times the rent in effect on the date of 
such termination of this Lease, computed on a daily basis for each day of 
such period. No holding over by Tenant, whether with or without consent of 
Landlord, shall operate to extend this Lease except as otherwise expressly 
provided. The preceding provisions of this Paragraph 17 shall not be 
construed as consent for Tenant to retain possession of the Premises in the 
absence of written consent thereto by Landlord.

18. QUIET ENJOYMENT.   Landlord represents that it has the authority to enter 
into this Lease and that, so long as Tenant pays all amounts due hereunder 
and performs all other covenants and agreements herein set forth, Tenant 
shall peaceably and quietly have, hold and enjoy the Premises for the term 
hereof without hindrance or molestation from Landlord, subject to the terms 
and provisions of this Lease.

19. EVENTS OF DEFAULT. The following events (herein individually referred  to 
as an "Event of Default") each shall be deemed to be default in or breach of 
Tenant's obligations under this Lease:                                     
     
      A.  Tenant shall fail to pay any installment of the rent herein 
reserved when due, or any other payment or reimbursement to Landlord required 
herein when due, and such failure shall continue for a period of ten (10) 
days from the date Landlord provided written notice that such payment was due.
     
      C.  Tenant shall fail to discharge any lien placed upon the Premises in 
violation of paragraph 22 hereof within twenty (20) days after any such lien 
or encumbrance is filed against the Premises.
     
      D.  Tenant shall default in the performance of any of its obligations
under any other lease to Tenant from Landlord, or from any person or entity
affiliated with or related to Landlord, and same shall remain uncured after the
lapsing of any applicable cure period provide for under such other lease.
     
      E.  Tenant shall fail to comply with any term, provision or covenant of
this Lease (other than those listed above in this paragraph), and shall not cure
such failure within thirty (30) days after written notice thereof from Landlord.
     
20. REMEDIES.  Upon each occurrence an Event of Default, Landlord shall have the
option to pursue anyone or more of the following remedies without any notice or
demand:

     (a)  Terminate this Lease;
     
     (b)  Enter upon and take possession of the Premises without terminating
          this Lease;

                                     4           Landlord's Initials _____

                                                 Tenant's Initials   _____



         (c)  Make such payments and/or take such action and pay and/or 
perform whatever Tenant is obligated to pay or perform under the terms of 
this Lease, and Tenant agrees that Landlord shall not be liable for any 
damages resulting to Tenant from such action; and/or

         (d)  Alter all locks and other security devices at the Premises, 
with or without terminating this Lease, and pursue, at Landlord's option, one 
or more remedies pursuant to this Lease, and Tenant hereby expressly agrees 
that Landlord shall not be required to provide to Tenant the new key to the 
Premises, regardless of hour, including Tenant's regular business hours; 

and in any such event Tenant shall immediately vacate the Premises, and if 
Tenant fails so to do, Landlord, without waiving any other remedy it may 
have, may enter upon and take possession of the Premises and expel or remove 
Tenant and any other person who may be occupying such Premises or any part 
thereof, without being liable for prosecution or any claim of damages 
therefor.  In the event of any violation of Section 93.008 of the Texas 
Property Code by Landlord or by any agent or employee of Landlord, Tenant 
hereby expressly waives any and all rights Tenant may have under Paragraph 
(g) of such Section 93.008.

         A.  DAMAGES UPON TERMINATION.  If Landlord terminates this Lease, at 
Landlord's option, Tenant shall be liable for and shall pay to Landlord the 
sum of all rental and other payments owed to Landlord hereunder accrued to 
the date of such termination, plus, as liquidated damages, an amount equal to 
(1) the present value of the total rental and other payments owed hereunder 
for the remaining portion of the Lease term, calculated as if such term 
expired on the date set forth in Paragraph 1, less, (2) the present value of 
the then fair market rental for the Premises for such period, provided that, 
because of the difficulty of ascertaining such value and in order to achieve 
a reasonable estimate of liquidated damages hereunder, Landlord and Tenant 
stipulate and agree, for the purposes hereof, that such fair market rental 
shall in no event exceed seventy-five percent (75%) of the rental amount for 
such period set forth in Paragraph 2 above.

         B.  DAMAGES UPON REPOSSESSION.  If Landlord repossesses the Premises 
without terminating this Lease, Tenant, at Landlord's option, shall be liable 
for and shall pay Landlord on demand all rental and other payments owed to 
Landlord hereunder, accrued to the date of such repossession, plus all 
amounts required to be paid by Tenant to Landlord until the date of 
expiration of the term as stated in Paragraph 1, diminished by all amounts 
actually received by Landlord through reletting the Premises during such 
remaining term (but only to the extent of the rent herein reserved).  Actions 
to collect amounts due by Tenant to Landlord under this paragraph may be 
brought from time to time, on one or more occasions, without the necessity of 
Landlord's waiting until expiration of the Lease term.

         C.  COSTS OF RELETTING, REMOVING, REPAIRS AND ENFORCEMENT.  Upon an 
Event of Default, in addition to any sum provided to be paid under this 
Paragraph 20, Tenant also shall be liable for and shall pay to Landlord (i) 
brokers' fees and all other costs and expenses incurred by Landlord in 
connection with reletting the whole or any part of the Premises; (ii) the 
costs of removing, storing or disposing Tenant's or any other occupant's 
property; (iii) the costs of repairing, altering, remodeling or otherwise 
putting the Premises into condition acceptable to a new Tenant or Tenants: 
(iv) any and all actual costs and expenses incurred by Landlord in effecting 
compliance with Tenant's obligations under this Lease; and (v) all reasonable 
expenses incurred by Landlord in enforcing or defending Landlord's rights 
and/or remedies hereunder, including without limitation, all reasonable 
attorneys' fees and all court costs incurred in connection with such 
enforcement or defense.

         D. LATE CHARGE.  In the event Tenant fails to make any payment due 
hereunder within five (5) days after such payment is due, including without 
limitation any rental or escrow payment, in order to help defray the 
additional cost to Landlord for processing such late payments and not as 
interest, Tenant shall pay to Landlord on demand a late charge in an amount 
equal to five percent (5%) of such payment.  The provision for such late 
charge shall be in addition to all of Landlord's other rights and remedies 
hereunder or at law, and shall not be construed as liquidated damages or as 
limiting Landlord's remedies in any manner.

         E.  INTEREST ON PAST DUE AMOUNTS.  If Tenant fails to pay any sum 
which at any time becomes due to Landlord under any provision of this Lease 
as and when the same becomes due hereunder, and such failure continues for 
ten (10) days after the due date for such payment, then Tenant shall pay to 
Landlord interest on such overdue amounts from the date due until paid at an 
annual rate which equals the lesser of (i) eighteen percent (18%) or (ii) the 
highest rate then permitted by law.

         F.  NO IMPLIED ACCEPTANCES OR WAIVERS.  Exercise by Landlord of any 
one or more remedies hereunder granted or otherwise available shall not be 
deemed to be an acceptance by Landlord of Tenant's surrender of the Premises, 
it being understood that such surrender can be effected only by the written 
agreement of Landlord.  Tenant and Landlord further agree that forbearance by 
Landlord to enforce any of its rights under this Lease or at law or in equity 
shall not be a waiver of Landlord's right to enforce any one or more of its 
rights, including any right previously forborne, in connection with any 
existing or subsequent default.  No re-entry or taking possession of the 
Premises by Landlord shall be construed as an election on its part to 
terminate this Lease, unless a written notice of such intention is given to 
Tenant, and, notwithstanding any such reletting or re-entry or taking 
possession of the Premises, Landlord may at any time thereafter elect to 
terminate this Lease for a previous default. Pursuit of any remedies 
hereunder shall not preclude the pursuit of any other remedy herein provided 
or any other remedies provided by law, nor shall pursuit of any remedy herein 
provided constitute a forfeiture or waiver of any rent due to Landlord 
hereunder or of any damages occurring to Landlord by reason of the violation 
of any of the terms, provisions and covenants contained in this Lease. 
Landlord's acceptance of any rent following either an Event of Default 
hereunder shall not be construed as Landlord's waiver of such Event of 
Default. No waiver by Landlord of any violation or breach of any of the 
terms, provisions and covenants of this Lease shall be deemed or construed to 
constitute a waiver of any other violation or default.

         G.   RELETTING OF PREMISES.  In the event of any termination of this 
Lease and/or repossession of the Premises for an Event of Default, Landlord 
shall use reasonable efforts to relet the Premises and to collect rental 
after reletting, with no obligation to accept any lessee that Landlord deems 
undesirable or to expend any funds in connection with such reletting or 
collection of rents therefrom. Tenant shall not be entitled to credit for or 
reimbursement of any proceeds of such reletting in excess of the rental owed 
hereunder for the period of such reletting. Landlord may relet the whole or 
any portion of the Premises for any period, to any Tenant and for any use or 
purpose.

         H.   LANDLORD'S DEFAULT.  If Landlord fails to commence to perform 
any of its obligations hereunder within thirty  (30) days after written 
notice from Tenant specifying such failure, and such failure results in a 
defect that seriously jeopardizes the safety of persons occupying the 
Premises or threatens equipment or machinery owned by Tenant within the 
Premises, or such defect impairs Tenant's ability to conduct its business 
within the Premises, and Landlord has failed to commence to cure the default 
or obligation within the thirty (30) day period outlined above, Tenant shall 
be permitted to cure Landlord's default or obligation and Landlord will be 
obligated to reimburse Tenant for the actual cost incurred to cure Landlord's 
default or obligation.

All obligations of Landlord hereunder will be construed as covenants, not 
conditions; and all such obligations will be binding upon Landlord only 
during the period of its possession of the Premises and not thereafter. The 
term "Landlord" shall mean only the owner, for the time being of the Premises 
and, in the event of the transfer by such owner of its interest in the 
Premises, such owner shall thereupon be released and discharged from all 
covenants and obligations of the Landlord thereafter accruing, provided that 
such  covenants and  obligations shall be binding during the Lease term upon 
each new owner for the duration of such owner's ownership. Notwithstanding 
any other provision of this Lease, Landlord shall not have any personal 
liability hereunder.  In the event of any breach or default by Landlord in 
any term or provision of this Lease, Tenant agrees to look solely to the 
equity or interest then owned by Landlord in the Premises or the Building; 
however, in no event, shall any deficiency judgment or any money judgment of 
any kind by sought or obtained against any Landlord.

         I.  TENANT'S PERSONAL PROPERTY.  If Landlord repossesses the Premises
pursuant to the authority herein granted, or if Tenant vacates or abandons all
or any part of the Premises, then, in addition to Landlord's rights under
Paragraph 29 hereof, Landlord shall have the right to (i) keep in place and use
or (ii) remove and store, all of the furniture, fixtures, and equipment at the
Premises, including that which is owned by Tenant, at all times prior to any
foreclosure thereon by Landlord or repossession thereof by any lessor thereof or
third party having a lien thereon. In addition to the Landlord's other rights
hereunder, Landlord may dispose of the stored property if Tenant does not claim
the property within twenty (20) days after the date the property is stored.
Landlord shall give Tenant at least ten (10) ten days prior written notice of
such intended disposition. Landlord shall also have the right to relinquish
possession of all or any portion of such furniture, fixtures, equipment and
other property to any person ("Claimant")  who  presents to Landlord a copy of
any instrument represented by Claimant to have been executed by Tenant (or any 
predecessor  of Tenant) granting Claimant the right under various circumstances
to take

                                     5           Landlord's Initials _____

                                                 Tenant's Initials   _____


possession of such furniture, fixtures, equipment or other property, without 
the necessity on the part of Landlord to inquire into the authenticity or 
legality of said instrument. The rights of Landlord herein stated shall be in 
addition to any and all other rights that Landlord has or may hereafter have 
at law or in equity; and Tenant stipulates and agrees that the rights granted 
Landlord under this paragraph are commercially reasonable.

21.  MORTGAGES.  Tenant accepts this Lease subject and subordinate to any 
mortgages and/or deeds of trust now  or  at  any  time hereafter constituting 
a lien or charge upon the Premises or the improvements situated thereon or 
the Building, provided, however, that if the mortgagee, trustee or holder of 
any such mortgage or deed of trust elects to have Tenant's interest in this 
Lease superior to any such instrument, then by notice to Tenant from such 
mortgagee, trustee or holder, this Lease shall be deemed superior to such 
lien, whether this Lease was executed before or after said mortgage or deed 
of trust. Tenant, at any time hereafter on demand, shall execute any 
instruments, releases or other documents that may be required by any 
mortgagee for the purpose  of subjecting  and subordinating this Lease to the 
lien of any such mortgage, provided the subordination does not change any of 
the Lease terms contained within this Lease and the subordination agreement 
contains an attornment and non-disturbance agreement. Tenant shall not 
terminate this Lease or pursue any other remedy available to Tenant hereunder 
for any default on the part of Landlord without first giving written notice 
by certified or registered mail, return receipt requested, to any mortgagee, 
trustee or holder of any such mortgage or deed of trust, the name and post 
office address of which Tenant has received written notice, specifying the 
default in reasonable detail and affording such mortgagee, trustee or holder 
a reasonable opportunity (but in no event less than thirty days) to make 
performance, at its election, for and on behalf of Landlord.

22.  MECHANIC'S LIENS. Tenant has no authority, express or implied, to create 
or place any lien or encumbrance of any kind or nature whatsoever upon, or in 
any manner to bind the interest of Landlord or Tenant in the Premises. TENANT 
WILL SAVE AND HOLD LANDLORD HARMLESS FROM ANY AND ALL LOSS, COST OR EXPENSE, 
INCLUDING WITHOUT LIMITATION ATTORNEYS' FEES, BASED ON OR ARISING OUT OF 
ASSERTED CLAIMS OR LIENS AGAINST THE LEASEHOLD ESTATE OR AGAINST THE RIGHT, 
TITLE AND INTEREST OF THE LANDLORD IN THE PREMISES OR UNDER THE TERMS OF THIS 
LEASE.

23.  MISCELLANEOUS.

         A.  INTERPRETATION.  The captions inserted in this Lease are for 
convenience only and in no way define, limit or otherwise describe the scope 
or intent of this Lease, or any provision hereof, or in any way affect the 
interpretation of this Lease.

         B.  BINDING EFFECT.   Except as otherwise herein expressly provided, 
the terms, provisions and covenants and conditions in this Lease shall apply 
to, inure to the benefit of and be binding upon the parties hereto and upon 
their respective heirs, executors, personal representatives, legal 
representatives, successors and assigns.  Landlord shall have the right to 
transfer and assign, in whole or in part, its rights and obligations in the 
Premises and in the Building and other property that are the subject of this 
Lease.

         C.  EVIDENCE OF AUTHORITY.  Tenant agrees to furnish to Landlord, 
promptly upon demand, a corporate resolution, proof of due authorization by 
partners or other appropriate documentation evidencing the due authorization 
of such party to enter into this Lease.

         D.  FORCE MAJEURE.  Landlord shall not be held responsible for 
delays in the performance of its oblations hereunder when caused by material 
shortages, acts of God, labor disputes or other events beyond the control of 
Landlord.

         E.  PAYMENTS CONSTITUTE RENT.  Notwithstanding anything in this 
Lease to the contrary, all amounts payable by Tenant to or on behalf of 
Landlord under this Lease, whether or not expressly denominated as rent, 
shall constitute rent.

         F.  ESTOPPEL CERTIFICATES.  Tenant agrees, from time to time, within 
ten (10) days after request of Landlord, to deliver to Landlord, or 
Landlord's designee, an estoppel certificate stating that this Lease is in 
full force and effect, the date to which rent has been paid, the unexpired 
term of this Lease, any defaults existing under this Lease (or the absence 
thereof) and such other factual or legal matters pertaining to this Lease as 
may be requested by Landlord. It is understood and agreed that Tenant's 
obligation to furnish such estoppel certificates in a timely fashion is a 
material inducement for Landlord's execution of this Lease, provided it does 
not alter the terms of this Lease.

         G. ENTIRE AGREEMENT.  This Lease constitutes obligations which have 
the entire understanding and agreement of Landlord and Tenant with respect to 
the subject matter of this Lease, and contains all of the covenants and 
agreements of Landlord and Tenant with respect thereto.  Landlord and Tenant 
each acknowledge that no representations, inducements, promises or 
agreements, oral or written, have been made by Landlord or Tenant, or anyone 
acting on behalf of Landlord or Tenant, which are not contained herein, and 
any prior agreements, promises, negotiations or representations not expressly 
set forth in this Lease are of no force or effect.  EXCEPT AS SPECIFICALLY 
PROVIDED IN THIS LEASE, TENANT HEREBY WAIVES THE BENEFIT OF ALL IMPLIED 
WARRANTIES, IT BEING UNDERSTOOD THAT LANDLORD WILL CONSTRUCT THE PREMISES 
SPECIFICALLY FOR TENANT'S INTENDED USE AND IN ACCORDANCE WITH PLANS AND 
SPECIFICATIONS, AND WITH RESPECT TO THE PREMISES, INCLUDING WITHOUT 
LIMITATION ANY IMPLIED WARRANTY THAT THE PREMISES ARE SUITABLE FOR ANY 
PARTICULAR PURPOSE.  Landlord's agents and employees do not and will not have 
authority to make exceptions, changes or amendments to this Lease, or factual 
representations not expressly contained in this Lease.  Under no 
circumstances shall Landlord or Tenant be considered an agent of the other. 
This Lease may not be altered, changed or amended except by an instrument in 
writing signed by both parties hereto.

         H.  SURVIVAL OF OBLIGATIONS.   All obligations of Tenant hereunder 
not fully performed as of the expiration or earlier termination of the term 
of this Lease shall survive the expiration or earlier termination of the term 
hereof, including without limitation all payment obligations with respect to 
taxes and insurance and all obligations concerning the condition and repair 
of the Premises.  Upon the expiration or earlier termination of the term 
hereof, and prior to Tenant vacating the Premises, Tenant shall pay to 
Landlord any amount reasonably estimated by Landlord as necessary to put the 
Premises in good condition and repair, reasonable wear and tear excluded, 
including without limitation the cost of repairs to and replacements of all 
heating and air conditioning systems and equipment therein. Tenant shall 
also, prior to vacating the Premises, pay to Landlord the amount, as 
estimated by Landlord, of Tenant's obligation hereunder for real estate taxes 
and insurance premiums for the year in which the Lease expires or terminates. 
All such amounts shall be used and held by Landlord for payment of such 
obligations of Tenant hereunder, with Tenant being liable for any additional 
costs therefore upon demand by Landlord, or with any excess to be returned to 
Tenant after all such obligations have been determined and satisfied, as the 
case may be.  Any Security Deposit held by Landlord may, at Landlord's 
option, be credited against any amounts due from Tenant under this Paragraph
23H.

         I.  SEVERABILITY OF TERMS.  If any clause or provision of this Lease 
is illegal, invalid or unenforceable under present of future laws effective 
during the term of this Lease, then, in such event, it is the intention of 
the parties hereto that the remainder of this Lease shall not be affected 
thereby, and it is also the intention of the parties to this Lease that in 
lieu of each clause or provision of this Lease that is illegal, invalid or 
unenforceable clause or provision as may be legal, valid and enforceable.

         J.  EFFECTIVE DATE.  All references in this Lease to "the date 
hereof" or similar references shall be deemed to refer to the last date in 
point in time on which all parties hereto have executed this Lease.

         K.  BROKER'S COMMISSION.  Tenant represents and warrants that it has 
dealt with and will deal with no broker, agent or other persons other than 
CHRIS WHITWORTH OF HILL PARTNERS AND SCOTT YOUNG AND CHAD MUELLER OF SCOTT 
YOUNG PROPERTIES in connection with this transaction or future related 
transactions and that no broker, agent or other person brought about this 
transaction, and Tenant agrees to indemnify and hold Landlord harmless from 
and against any claims by any other broker, agent or other person claiming a 
commission or other form of compensation by virtue of having dealt with them 
with regard to this leasing transaction.

         L.  AMBIGUITY.  Landlord and Tenant hereby agree and acknowledge 
that this Lease has been fully reviewed and negotiated by both Landlord and 
Tenant, and that Landlord and Tenant have each had the opportunity to have 
this Lease reviewed by their respective legal counsel, and, accordingly, in 
the event of any ambiguity herein, Tenant does hereby waive the rule of 
construction that such ambiguity shall be resolved against the party who 
prepared this Lease.

                                     6           Landlord's Initials _____

                                                 Tenant's Initials   _____


         M.  JOINT AND SEVERAL LIABILITY.  If there be more than one Tenant, 
the obligations hereunder imposed upon Tenant shall be joint and several.  If 
there be a guarantor of Tenant's obligations hereunder, the obligations 
hereunder imposed upon Tenant shall be joint and several obligations of 
Tenant and such guarantor, and Landlord need not first proceed against Tenant 
before proceeding against such guarantor, nor shall any such guarantor be 
released from its guaranty for any reason whatsoever, including, without 
limitation, in case of any amendments hereto, waivers hereof or failure to 
give such guarantor any notices hereunder

         N. THIRD PARTY RIGHTS.  Nothing herein expressed or implied is 
intended, or shall be construed, to confer upon or give to any person or 
entity, other than the parties hereto, any right or remedy under or by reason 
of this Lease.

         0.  EXHIBITS AND ATTACHMENTS.  All exhibits, attachments, riders and 
addenda referred to in this Lease, and the exhibits listed herein below and 
attached hereto, are incorporated into this Lease and made a part hereof for 
all intents and purposes as if fully set out herein.  All capitalized terms 
used in such documents shall, unless otherwise defined therein, have the same 
meanings as are set forth herein.

         P.  APPLICABLE LAW.  This Lease has been executed in the State of 
Texas and shall be governed in all respects by the laws of the State of 
Texas. It is the intent of Landlord and Tenant to conform strictly to all 
applicable state and federal usury laws.  All agreements between Landlord and 
Tenant, whether now existing or hereafter arising and whether written or 
oral, are hereby expressly limited so that in no contingency or event 
whatsoever shall the amount contracted for, charged or received by Landlord 
for the use, forbearance or retention of money hereunder or otherwise exceed 
the maximum amount which Landlord is legally entitled to contract for, charge 
or collect under the applicable state or federal law.  If, from any 
circumstance whatsoever, fulfillment of any provision hereof at the time 
performance of such provision shall be due shall involve transcending the 
limit of validity prescribed by law, then the obligation to be fulfilled 
shall be automatically reduced to the limit of such validity, and if from any 
such circumstance Landlord shall ever receive as interest or otherwise an 
amount in excess of the maximum that can be legally collected, then such 
amount which would be excessive interest shall be applied to the reduction of 
rent hereunder, and if such amount which would be excessive interest exceeds 
such rent, then such additional amount shall be refunded to Tenant.

         24. NOTICES.  Each provision of this instrument or of any applicable 
governmental laws, ordinances, regulations and other requirements with 
reference to the sending, mailing or delivering of notice or the making of 
any payment by Landlord to Tenant or with reference to the sending, mailing 
or delivering of any notice or the making of any payment by Tenant to 
Landlord shall be deemed to be complied with when and if the following steps 
are taken:

         (i)    All rent and other payments required to be made by Tenant to 
Landlord hereunder shall be payable to Landlord at the address for Landlord 
set forth below or at such other address as Landlord may specify from time to 
time by written notice delivered in accordance herewith.  Tenant's obligation 
to pay rent and any other amounts to Landlord under the terms of this Lease 
shall not be deemed satisfied until such rent and other amounts have been 
actually received by Landlord.

         (ii)   All payments required to be made by Landlord to Tenant 
hereunder shall be payable to Tenant at the address set forth below, or at 
such other address within the continental United States as Tenant may specify 
from time to time by written notice delivered in accordance herewith. 

         (iii)  Except as expressly provided herein, any written notice, 
document or payment required or permitted to be delivered hereunder shall be 
deemed to be delivered when received or, whether actually received or not, 
when deposited in the United States Mail, postage prepaid, Certified or 
Registered Mail, addressed to the parties hereto at the respective addresses 
set out below, or at such other address as they have theretofore specified by 
written notice delivered in accordance herewith.

26.  ADDITIONAL PROVISIONS.  See EXHIBIT "B" attached hereto and incorporated by
reference herein.

         EXECUTED BY LANDLORD, this 15th day of April, 1998.
                                             
                        CAMERON TECHNOLOGY INVESTORS, LTD.
                                                       
                        BY:  CAMERON ROAD INVESTORS, LTD.  A TEXAS LIMITED
                             LIABILITY CO.
                                                       
                        ITS:  GENERAL PARTNER
                                                       
                        BY: 
                           ------------------------------
                                                        
                        ITS:  MANAGING DIRECTOR
                                                        
                        Address:  C/O Scott Young Properties
                        P.O. Box 1525, Austin, Texas  78767
                                               
         EXECUTED BY TENANT, this 8th day of April, 1998.
                                               
                        ADVANCED ENERGY INDUSTRIES, INC.
                                                        
                        By: 
                           ------------------------------
                                                                     
                        Its:
                            -----------------------------
                                                                      
                        Address: 1625 Sharp Point Drive
                        Fort Collins, CO  80525
                        Phone:    970-221-4670
          
                                     7           Landlord's Initials _____

                                                 Tenant's Initials   _____



                                                      Fax:      970-407-5243

EXHIBIT  "A"   Description of Premises 
EXHIBIT  "B"   Additional Provisions
EXHIBIT  "C"   Rules and Regulations
EXHIBIT  "D"   Tenant Construction Standards
EXHIBIT  "E"   Sign Criteria
EXHBIT   "F"   Construction Plans

                                     8           Landlord's Initials _____

                                                 Tenant's Initials   _____



                                   EXHIBIT "A"

                                      [MAP]



                                  EXHIBIT "A-1"

                                      [MAP]


                                 EXHIBIT "B"

                           ADDITIONAL PROVISIONS

1. N-N-N CHARGES. The initial estimated monthly costs for Tenant's 
Proportionate Share of costs based on preliminary estimates of the total 
operating costs of the Project for the first calendar year of the Lease are 
as follows:



- -------------------------------------------------------------------------------
     EXPENSE                PER SQUARE FOOT              AMOUNT PER MONTH
- -------------------------------------------------------------------------------
                                                   
     Property Taxes             $.09                           $1,782.00
     Insurance                  $.01                             $198.00
     CAM                        $.06                           $1,188.00
- -------------------------------------------------------------------------------
     TOTAL                      $.16                           $3,168.00
- -------------------------------------------------------------------------------


2. TENANT IMPROVEMENT AGREEMENT. Landlord shall cause to be performed the 
improvements (the "TENANT IMPROVEMENTS") in the Premises in accordance with 
plans and specifications approved by Tenant and Landlord (the "Plans"), which 
approvals shall not be unreasonably withheld. The Tenant Improvements shall 
be performed at the Tenant's cost, subject to the reimbursement of Landlord's 
Contribution.

Tenant shall cause the Plans to be prepared, at Tenant's cost, by a 
registered professional architect, and mechanical and electrical engineer(s) 
with the design criteria developed in accordance with EXHIBIT "D", TENANTS 
CONSTRUCTION STANDARDS attached and incorporated herein. Such engineer(s) 
shall be approved in advance by the Landlord. Prior to close-of-business on 
December 1, 1998, Tenant shall furnish the initial draft of the Plans to 
Landlord for Landlord's review and approval. Landlord shall within two (2) 
weeks after receipt either provide comments to such Plans or approve the 
same. Landlord shall be deemed to have approved such Plans if it does not 
timely provide comments on such Plans. If Landlord provides Tenant with 
comments to the initial draft of the Plans, Tenant shall provide revised 
Plans to Landlord incorporating Landlord's comments within one week after 
receipt of Landlord's comments. Landlord shall within one week after receipt 
then either provide comments to such revised Plans or approve such Plans. 
Landlord shall be deemed to have approved such revised Plans if Landlord does 
not timely provide comments on such Plans. The process described above shall 
be repeated, if necessary, until the Plans have been finally approved by 
Landlord. Tenant hereby agrees that the Plans for the Tenant Improvements 
shall comply with all applicable Governmental requirements. Landlord's 
approval of any of the Plans (or any modifications or changes thereto) shall 
not impose upon Landlord or its agents or representatives any obligation with 
respect to the design of the Tenant Improvements or the compliance of such 
Tenant Improvement or the Plans with applicable Governmental Requirements.

Landlord, with consultation of Tenant, shall mutually select a contractor to 
perform the construction of the Tenant Improvements. Such contractor shall be 
selected by a competitive bid process between three contractors selected by 
Landlord and Tenant. Landlord shall use commercially reasonable efforts to 
cause the Tenant Improvements to be substantially completed, except for minor 
"Punch List" items, on or before the Commencement Date specified in the 
Lease, subject to Tenant Delay and Force Majeure.

Landlord, or an agent of Landlord, shall provide project management services 
in connection with the construction of the Tenant Improvements and the Change 
Orders (hereinafter defined). Such project management services shall be 
performed, at Tenant's cost, for a fee of five percent (5%) of all costs 
related to the preparation of the Plans and the construction of the Tenant 
Improvements and the Change Orders.

     A. CHANGE ORDERS. If, prior to the Commencement Date, Tenant shall 
require improvements or changes (individually or collectively, "CHANGE 
ORDERS") to the Premises in addition to, revision of, substitution for the 
Tenant Improvements, Tenant shall deliver to Landlord for its approval plans 
and specifications for such Change Orders. If Landlord does not approve of 
the plans for Change Orders, Landlord shall advise Tenant of the revisions 
required. Tenant shall revise and redeliver the plans and specifications to 
Landlord within five (5) business days of Landlord's advice or Tenant shall 
be deemed to have abandoned its request for such Change Orders. Tenant 
shall pay for all preparations and revisions of plans and specifications, and 
the construction of all Change Orders, subject to Landlord's Contribution.

     B. LANDLORD'S CONTRIBUTION. Landlord shall contribute an amount up to 
FIFTEEN DOLLARS ($15.00) PER SQUARE FOOT ("LANDLORD'S CONTRIBUTION") toward 
the costs incurred for the Tenant Improvements and Change Orders. Landlord 
has no obligation to pay for costs of the Tenant

                                        1



Improvements or Change Orders in excess of Landlord's Contribution; Tenant 
shall pay such overage to Landlord prior to commencement of construction of 
the Tenant Improvements and/or Change Orders.

     C. COMMENCEMENT DATE DELAY. Commencement Date shall be delayed until the 
Tenant Improvements have been substantially completed (the "COMPLETION 
DATE"), except to the extent that the delay shall be caused by any one or 
more of the following (a "TENANT DELAY"):

     (i)   Tenant's request for Change Orders whether or not any such Change 
Orders are actually performed; or

     (ii)  Contractor's performance of any Change Orders; or

     (iii) Tenant's request for materials, finishes or installations requiring 
unusually long lead times; or 

     (iv)  Tenant's delay in reviewing, revising or approving plans and 
specifications beyond the periods set forth herein; or

     (v)   Tenant's delay in providing information critical to the normal 
progression of the project. Tenant shall provide such information as soon as 
reasonably possible, but in no event longer than one week after receipt of 
such request for information from the Landlord; or

     (vi)  Tenant's delay in making payments to Landlord for costs of the 
Tenant Improvements and/or Change Orders in excess of the Landlord's 
Contribution; or

     (vii) Any other act or omission by Tenant, its agents, contractors or 
persons employed by any of such persons.

If the Commencement Date is delayed for any reason, then Landlord shall cause 
the Architect to certify the date on which the Tenant Improvements would have 
been completed but for such Tenant Delay, or were in fact completed without 
any Tenant Delay.

3. RIGHT TO EXPAND AND RELOCATE. During the term of this Lease, should 
Tenant's lease space requirements increase to the extent that expansion 
within the Building containing the Premises is impossible, Landlord shall use 
good faith in an attempt to relocate Tenant into a larger lease space within 
the Cameron Technology Center or other office/warehouse space owned by 
Landlord or in a building to be built by Landlord for Tenant on land mutually 
agreed upon by Landlord and Tenant.

In such event, Landlord shall agree to lease such space to Tenant at a rental 
rate indicative of the fair market rental rate prevalent at the time for 
similarly constructed and located office-warehouse lease space in Austin, 
Texas. Upon Tenant's relocation into the larger lease space owned or 
developed by Landlord and upon the reletting of the Premises, this Lease 
shall terminate and the new lease between Landlord and Tenant shall govern.

4. RIGHT OF FIRST REFUSAL. Tenant shall be granted the Right of First Refusal 
for any contiguous lease space to the Premises that should become available 
from time to time during the term of this Lease. Upon Landlord's receipt of 
an acceptable written offer to lease from a bona fide third party which 
desires to lease space contiguous to the Premises, Landlord shall immediately 
notify Tenant as to the terms and conditions contained in the offer. Tenant 
shall have ten (10) days from the date Landlord notifies Tenant of the third 
party offer in which to accept or decline the same terms contained in the 
third party offer. Should Tenant decline to match this offer, Landlord shall 
be free to lease the available lease space to the third party.

5. MISCELLANEOUS. In addition to the provisions contained within this Lease 
agreement, Landlord and Tenant mutually agree to the following:

     A. DOCK DOORS. Landlord shall install an overhead, dock-high door for 
each bay within the Premises at the rear of the Building unless Tenant 
stipulates that an overhead door is unnecessary.

     B. TENANT EQUIPMENT. Landlord will allow the Tenant to install at 
Tenant's sole expense, a 12' X 12' concrete pad with a security fence 
surrounding the pad at the rear of the Premises in a location mutually agreed 
upon by Landlord and Tenant. This fenced area will store an air compressor 
and chilled water tower. At the end of the Lease Term, Tenant shall remove 
all equipment installed in or about the Premises or Building and the Premises 
and/or Building shall be returned to its original condition, reasonable wear 
and tear excepted.

                                        2


                                  EXHIBIT "C"

                    BUSINESS PARK RULES AND REGULATIONS

The following rules and regulations shall apply where applicable, to the 
Premises, the Building, the Project, the driveways and parking areas, the 
land situated beneath the Premises, Building, and Project and the 
appurtenances thereto:

1.  Sidewalks, doorways, halls stairways and other similar areas shall not be 
    obstructed by Tenant or used by any Tenant for any purpose other than     
    ingress and egress to and from the Premises and for going from one to     
    another part of the Building.

2.  Plumbing fixtures and appliances shall be used only for the purposes for 
    which designed, and no sweepings, rubbish, rags or other unsuitable material
    shall be thrown or placed therein. Damage resulting to any such fixtures 
    or appliances from misuse by a Tenant or such Tenant's agents, employees 
    or invitees, shall be paid by such Tenant, and Landlord shall not in any 
    case be responsible therefor.

3.  No signs, advertisements or notices shall be painted or affixed on or to 
    any windows or doors or other exterior part of the Building or the 
    Premises except of such color, size and style and in such places as shall 
    be first approved by, Landlord. Landlord, at Tenant's sole cost and 
    expense, shall install all letters or numerals by or on doors in such 
    Tenants Premises, which letters or numerals shall be in building standard
    graphics. No nails, hooks or screws shall be driven or inserted in any 
    part of the Building outside the Premises except by the Building maintenance
    personnel nor shall any part of the Building be defaced by Tenant. No 
    curtains or other window treatments shall be placed between the glass and 
    the Building standard window treatments.

4.  Landlord will provide and maintain a directory for all Tenants at the end 
    of each building and no other directory shall be permitted unless 
    previously consented to by Landlord in writing.

5.  Two (2) keys to the locks on the exterior doors entering each Tenant's 
    Premises shall be furnished by Landlord free of charge, with any 
    additional keys to be furnished by Landlord to each Tenant, at Tenant's
    cost. Tenant shall not place any additional lock or locks on any door in 
    or to its Premises without Landlord's prior written consent. All such 
    keys shall remain the property of Landlord. Landlord will reduce $20.00 
    per key from Tenant's Security Deposit account for each key issued and 
    not returned by Tenant at time of move out.

6.  Landlord will provide within the Business Park a postal box for Tenants 
    receipt of letter mail only. Landlord will issue to the tenant two keys 
    to the postal box. The box keys are not to be duplicated by the Tenant. 
    Tenant is held accountable for the keys and will bear the cost or 
    re-keying the locks should the Tenant fail to return all keys at the end 
    of the Lease.

7.  With respect to work being performed by Tenants in its Premises with the 
    approval of Landlord, all tenants will refer all contractors, 
    contractors' representatives and installation technicians rendering any 
    service to them to Landlord for Landlord's supervision, approval and 
    control before the performance of any contractual services. This 
    provision shall apply to all work performed in the Building including, 
    but not limited to, installations of telephones, telegraph equipment, 
    electrical devises and attachments, doors, entrance ways, and any and all 
    installations of every nature affecting floors, walls, woodwork, trim, 
    windows, ceilings, equipment and any other physical portion of the 
    Premises and Building.

8.  Each tenant shall cooperate with Landlord's employees in keeping its 
    Premises neat and clean.

9.  Tenant is responsible for janitorial service within its Premises.

10. Designated areas for trash containers are assigned to each tenant. Tenants 
    will be billed direct by a trash removal service approved by the 
    Landlord. Drums, pallets, equipment, vehicles, etc. are not allowed to be 
    stored outside of building. Trash in the common area will be removed by 
    the Landlord and the cost of removal prorated to the Tenants sharing the 
    common area.

11. Landlord shall not be responsible to the tenants, their agents, 
    employees, or invitees for any loss of property from the Premises or 
    public areas or for any damages to any property thereon from any cause 
    whatsoever.

12. Should a tenant require telegraphic, telephonic, annunicator or other 
    communication service, Landlord will direct the electrician where and how 
    wires are to be introduced and placed and none shall be introduced or 
    placed except as Landlord shall direct.

13. Tenant shall not make or permit any improper, objectionable or unpleasant 
    noises or odors in the Premises or Building or otherwise interfere in any 
    way with other tenants or persons having business with them.

                                     1           Landlord's Initials _____

                                                 Tenant's Initials   _____



SANITARY SEWER
- --------------

A sewer line will be installed under floor accessible to the Premises. 
Tenant's sewer piping will start at the point of the sewer line tap in 
Tenant's Premises.

ELECTRICITY
- -----------

All electric service meter wireways will be installed in an area determined 
by Landlord. Each Tenant shall furnish and install his meter at the 
appropriate meter wireway as approved by Landlord. Tenant shall be 
responsible for obtaining an electric meter at his cost. If the wattage 
density exceeds that provided in the shell for Tenant's lease space, the 
Tenant will pay the additional cost for larger service to be installed by 
Landlord. Total power requirements shall be tabulated on the Tenant's working 
drawings submitted for approval.

                                     2           Landlord's Initials _____

                                                 Tenant's Initials   _____



14. No machinery of any kind shall be operated by Tenant in its Premises 
    without the prior written consent of Landlord, nor shall any tenant use or 
    keep in the Premises or Building any flammable or explosive fluid or 
    substance.

15. Nothing shall be swept or thrown into parking areas or driveways. No 
    birds or animals shall be brought into or kept in, or about any tenant's
    leased premises.

16. Tenant, is agents, employees and invitees shall park only in those areas 
    designated by Landlord for parking by Tenant and shall not park on any 
    public or private streets contiguous to, surrounding or in the vicinity 
    of the Building without Landlord's prior written consent.

17. No portion of any tenant's Premises shall at any time be used or occupied 
    as sleeping or lodging quarters.

18. Landlord reserves the right to rescind any of these rules and 
    regulations and to make such other and further reasonable rules and 
    regulations as in its judgment shall from time to time be needful for the 
    safety, protection, care and cleanliness of the Building and Project, the 
    operation hereof, the preservation of good order therein and the protection 
    and comfort of the Tenants and their agents, employees and invitees, which 
    rules and regulations, when made and written notice thereof is given to a 
    Tenant, shall be binding upon it in like manner as if originally herein 
    prescribed.

                                     1           Landlord's Initials _____

                                                 Tenant's Initials   _____



                                 EXHIBIT "D"
                        TENANT CONSTRUCTION STANDARDS

TENANT SPACE DRAWINGS AND SPECIFICATION REQUIREMENTS
If Landlord's Architect does not prepare the drawings and specifications, 
then Tenant agrees that they shall be prepared by a licensed Architect and 
shall bear his registration seal, number, and signature.  All documents must 
be reviewed and approved by Landlord and his Architect prior to the start of 
construction. The Tenant is required, upon completion of the construction, to 
provide the Landlord with a marked up blue line complete set of prints 
showing the conditions as built and a reproducible mylar complete set of 
drawings with changes in ink and a copy of the building permit and 
Certificate of Occupancy.

BUILDING CODES AND STANDARDS
All plans, specifications and construction for the Tenant's space must 
conform to the following codes and standards and any other applicable codes, 
standards, ordinances, and regulations.

     1.   Current Uniform Building Codes accepted by the City of Austin.
     2.   National Electrical Code.
     3.   City of Austin, Electrical Utility Department Code.
     4.   Uniform Mechanical Code.
     5.   City of Austin Health Department Code.
     6.   Department of Labor - Occupational Safety and Health Standards.
     7.   Consumer Product Safety Commission.
     8.   State of Texas Architectural Barriers Requirements.
     9.   Fire Marshall Requirements.

CONSTRUCTION ACCESS
Tenant shall use only the area immediately to the rear of its lease space for 
construction access.  Adjoining spaces shall not be used for any purpose. 
Tenant shall be responsible for the repair of any damage done to the Project 
or Building  by Tenant's construction of its own lease space.

TEMPORARY UTILITIES
Tenant and/or his contractors and/or subcontractors are responsible for 
temporary toilets and temporary utilities for their work, including payment 
of all utility charges.  All arrangements shall be made with City of Austin, 
Southern Union Gas, and Southwestern Bell as applicable.

CONSTRUCTION TRASH
Trash, surplus construction materials, boxes, crates, debris, etc., from the 
Tenant's construction shall be removed daily from the Premises and hauled off 
the project site.  Trash left on the project will be hauled off at the 
Tenant's expense.

TENANT SEPARATION
Walls which abut another Tenant's space must be a minimum  two (2) Hour rated 
extending from floor to the roof deck with insulation.  In the case where the 
space is vacant adjacent to Tenant's demising wall(s), such a wall shall be 
constructed of 3 1/2" metal studs spaced at 16" o.c. with minimum two (2) 
layers of 5/8" thick type X gypsum wallboard on the Tenant's side with 
staggered 2' joints.  All penetrations to the demising wall(s) shall be 
treated to maintain the minimum two (2) Hour rating.

TELEPHONE
It is each Tenant's responsibility to procure the telephone service to its 
Premises.  If any telephone equipment room is required by the Tenant,  it 
must be located within its Premises.  Tenants shall be responsible for 
routing its telephone service through the raceway system provided by Landlord 
in the shell building.

HVAC
Space above ceilings may not be used as a return air plenum.  All return air 
shall be ducted from the conditioned space.  The Landlord has the right to 
approve or disapprove the HVAC design and Tenant shall select the HVAC 
equipment from Landlord's standards.  Location of roof top units shall be on 
pads as provided in the shell building with the location approved by the 
Landlord. Tenant shall indicate the actual weights and dimensions on their 
working drawings for review and approval by the Landlord of roof mounted 
equipment. Condensation lines shall drain into each Tenant's sewer

ROOF PENETRATIONS
All roof penetrations, equipment supports, pitch pans, flashing curbing, and 
roofing repairs shall be as approved by Landlord and performed by a roofer 
approved by Landlord at Tenant's expense.  All roof penetrations shall occur 
within the boundaries of the Premises.

WATER
A common water line and valve will be provided for each lease space.  Tenant 
water piping shall start at the point of the valve.  All tenants requiring 
more plumbing than  the required toilet room facilities, drinking fountain 
(1), service sink (1), employee bar type sink (1) shall be required to 
furnish their own piping, meter, and installation.  Should Tenant's water 
consumption levels exceed typical levels, Landlord and Tenant agree that 
Tenant shall supply a water flow meter of which Landlord shall read monthly 
and bill back Tenant for Tenant's actual consumption.

                                     1           Landlord's Initials _____

                                                 Tenant's Initials   _____



                                  EXHIBIT "E"

                                 SIGN CRITERIA

1. COST OF THE SIGN(S). Identifying Tenant graphics for all leased Premises 
   are the responsibility of Tenant. All expenses for fabrication, 
   installation and sign maintenance shall be borne solely by Tenant.

2. APPROVAL OF SHOP DRAWINGS. Prior to the fabrication of any sign, Tenant 
   shall present to Landlord for approval, shop drawings prepared by the 
   manufacturer.  All shop drawings shall be dimensionally scaled with the 
   proposed sign located on a drawing of the building elevation; the shop 
   drawings shall indicate all dimensions; shall indicate the actual letter 
   style or font; if a logo is to be used, the actual logo shall be 
   illustrated on the building elevation; all actual materials, paint brand 
   and color(s) shall be specified; and the method of the sign attachment to 
   the Building shall be clearly denoted

3. MATERIALS. Tenant sign graphics shall consist of individually cut letters. 
   Letters shall be cut from 1/8" Lexan mounted or laminated to a three inch 
   (3") width sign foam board or similar material.  Letters shall be primed 
   and painted uniformly on face and sides with Benjamin Moore Industrial 
   grade paint or equivalent.

4. LOGOTYPES. Logotypes shall be cut from the same material as letters. 
   Logotype area shall not exceed eighteen inches (18") in height and the 
   sign or logotype length shall not exceed the lesser of fifty percent (50%) 
   of the width of Tenant's Premises or fifteen feet (15').  All signs or 
   logotypes shall be located above and appurtenant to the store front of the 
   Premises.

5. SIZE. No individual letter shall exceed eighteen inches (18") in height. 
     Letter line length shall not exceed the lesser of fifty percent (50%) of
     the width of Tenant's Premises or fifteen feet (15').  Should Tenant's sign
     contain more than one letter line, the total height of all letter lines
     combined shall not exceed forty inches (40").  All signs or logotypes shall
     be located above and appurtenant to the store front of the Premises.

6. MOUNTING METHODS. All letters shall be mounted with clear silicone and 
   mounted flush to the exterior wall surface.  Upon the expiration of the 
   Lease, Tenant shall remove all exterior signs from the Building and shall 
   restore the exterior of the Building to its original condition.  Should 
   Tenant fail to do so, Landlord reserves the right to perform this duty and 
   deduct all costs associated with the removal of the sign and restoration of 
   the Building from the Security Deposit.

7. PROHIBITED MATERIALS. Pan signs, illuminated signs, neon or flashing 
   signs, banners, sandwich boards or any other sign type or material not 
   specifically allowed above.

8. DOORS AND WINDOW GRAPHICS. Vinyl door and window graphics are permitted. 
   Letter size shall not exceed 1-1/2" cap height.  Line length shall not 
   exceed 20".  All graphics shall be reverse cut from white 3M vinyl, 
   Sparcal vinyl or equivalent vinyl material and shall be mounted to the 
   interior of door glass or sidelight glass.  Plaques, neon or paper signs are 
   prohibited at all times.

                                                 Landlord's Initials _____

                                                 Tenant's Initials   _____