Orolia GSG-5 Series, Руководство пользователя с руководством по SCPI, Страница: 122 / 392

The OCXO DAC value is adjusted according to the frequency measured by the GSG unit
from the 10 MHz output at the back panel. Using a frequency counter, adjust the OCXO
value until the GSG shows 10 MHz.
The PPS delay is essentially an “equipment delay” of the generated signal. To measure it
properly, you need to measure the difference between the GSG's PPS out (Trigger out)
and the PPS out of a trusted GPS timing receiver. The value is always positive, and is set in
microseconds. Three digits can be given, enabling nanosecond resolution. The allowed
range is [0.000-4.000] microseconds.
Note that if you try to measure this delay, remember to take into account the GPS time to
UTC time offset set in the scenario you use. Timing receivers typically output the UTC syn-
chronized PPS signal.
After the calibration is complete, the new values can be saved by pressing exit or menu .
Press cancel to discard the values and keep the previous calibration settings.
106 User Manual GSG-5/6 Series Rev. 27
3.6 "Options" Menu