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ANRITSU Model 68253B/68353B Date: __________________________
Serial Number __________________ Tested By: __________________________
682XXB/683XXB MM A-55
3-6 Internal Time Base Aging Rate Test
Test Procedure
Measured Value Upper Limit
Record frequency error value
....................
_______________
Record frequency error value (after 24 hours)
...........
_______________
Record the computed aging rate
..................
_______________per day 2x10
–8
per day
(5x10
–10
per day
with Option 16)