ANRITSU Model 68247B/68347B Date: __________________________
Serial Number __________________ Tested By: __________________________
682XXB/683XXB MM A-37
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)