Can I use FieldFox’s GPS frequency reference as a reference for other devices?

Yes. When FieldFox’s frequency reference is locked to GPS, that greatly increases the frequency accuracy. Specifications can be found in the data sheet. That reference accuracy can be transferred to other systems using the 10 MHz Ref Out port of FieldFox. That is, you can connect a GPS antenna to FieldFox and lock the frequency-reference to GPS (using the connector on the top), and then have the 10 MHz Ref Out (connector on right side) from FieldFox connected to other devices, as means of transferring the frequency reference accuracy.

For more information about Keysight Fieldfox series, please visit FieldFox Handheld RF and Microwave Analyzers.