SMA GNSS antenna input

What is the purpose of GPS Antenna input at the backside of GSG7 GNSS simulator?

Hi @mac21 ,
The input is actually for the GSG-7’s timing module, the CDM-7.
That input is used to calibrate the OCXO of the CDM-7 card.
This can be done using the Skydel CDM-7 Calibration Tool.

Hope that helps!