Filter
Top Products
Appendix D Performance Tests
Complete Performance Tests
Operating and Programming Guide D-23
8 Note the time interval average for 100 samples, either positive or
negative.
NOTE Do not re-connect the antenna at this time. It must remain
disconnected for the entire 24-hour period.
9 Wait 24 hours to complete the Holdover Aging test. During this
24-hour period, ensure that the temperature restrictions are
maintained. If the temperature does exceed the range, the Receiver
will have to be re-connected to the antenna, allowed to lock, run for at
least 3 days, and re-tested with this procedure.
10 Repeat steps 3, 4, 5, and 8 above after the 24 hour period.
11 If desired, re-connect the antenna cable at this time.
12 Compute the Holdover Aging rate using the following formula:
Where,
t1 is the average time interval first measured
t2 is theaverage time interval last measured
∆t is the time between measurements (86,400 seconds = 24 hours)
13 Compute the Accumulated Time Error using the following formula:
(t1 - t2) seconds = Error (seconds)
Where t1 and t2 are defined as in the previous step.
14 Record the results of Holdover Aging and 1 PPS Accumulated Time
Error in the Test 2 row of the Performance Test Record.
t1 t2–()ondssec
t ondssec∆
---------------------------------------------- Aging rate (unitless)=