<ARTICLE> 5
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                          11,261
<SECURITIES>                                    17,329
<RECEIVABLES>                                   37,731
<ALLOWANCES>                                     (555)
<INVENTORY>                                     23,465
<CURRENT-ASSETS>                                95,915
<PP&E>                                          32,318
<DEPRECIATION>                                (16,753)
<TOTAL-ASSETS>                                 122,627
<CURRENT-LIABILITIES>                           21,815
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            27
<OTHER-SE>                                     100,582
<TOTAL-LIABILITY-AND-EQUITY>                   122,627
<SALES>                                        125,385
<TOTAL-REVENUES>                               125,385
<CGS>                                           71,450
<TOTAL-COSTS>                                   71,450
<OTHER-EXPENSES>                                40,689
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  34
<INCOME-PRETAX>                                 14,394
<INCOME-TAX>                                     5,555
<INCOME-CONTINUING>                              8,839
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     8,839
<EPS-BASIC>                                       0.33
<EPS-DILUTED>                                     0.31