...
The PRTC must be compensated for the RF cable delay from the GNSS simulator - how this is done is device specific - it will typically be entered in nanoseconds of delay, or meters of cable.
Some PRTC’s may allow for output signal compensation, it is recommended that initially the PRTC is tested with zero output signal compensation, and once this has been validated then the operation of any output compensation can be tested.
Paragon-neo 1PPS Reference Cable compensation accounts for the difference between propagation delays of the simulator 1PPS output to the Paragon-neo reference input. In the example above this is 10+18+10 = 38ns.
Because the PRTC RF input has been compensated (step 1), the Paragon-neo 1PPS Reference Cable compensation number will be a positive number.If the PRTC has a PTP output, the Paragon-neo DUT Ethernet cable compensation accounts for the propagation delay of the cable between the PRTC PTP output and Paragon-neo measurement port. In the example above this is 20ns.
Paragon-neo 1PPS measurement cable compensation accounts for the propagation delay of the cable between the PRTC 1PPS output and Paragon-neo measurement port. In the example above this is 10+18+10 = 15ns.
Using the example propagation delays from the pictures above, compensation values are entered into the Paragon-neo GUI through two GUI application panels.
...
The 1PPS measurement cable is compensated in the Delay Compensation field in the 1PPS Time Error Measurement + Time of Day panel.
The 1PPS reference cable compensation can also be entered in this panel, or it will be copied from the PTP Emulation Test Configuration panel.
...