ANRITSU Model 68255B/68355B Date: __________________________
Serial Number __________________ Tested By: __________________________
682XXB/683XXB MM A-73
3-6 Internal Time Base Aging Rate Test
Test Procedure Measured Value Upper Limit
Recordfrequency error value.................... _______________
Recordfrequency error value (after 24 hours) ........... _______________
Recordthe computed aging rate .................. _______________per day 2x10–8per day
(5x10–10per day
withOption 16)