Frequency Reference Source - Keysight N9912A User Manual

System Settings
System Configuration
In the above image, the following icons show if the FieldFox is locked on
satellites:
Saving Data with GPS Enabled
GPS position and clock data are included when data is saved with the following
files types: *.csv, *.SnP, State, State+Trace data save.
A warning is shown if the GPS is ON but unlocked at time of save, or if the GPS
feature is ON but no GPS is physically present at time of save.
The following is a sample S1P file with GPS information:
!GPS Latitude: 38 28.87717 N
!GPS Longitude: 122 42.66625 W
!GPS TimeStamp: 06/25/2010 16:24:48
!GPS Seconds Since Last Read: 2

Frequency Reference Source

The FieldFox can phase lock with an external 10 MHz reference signal. When a
high-stability 10 MHz reference signal is available, this can improve the
accuracy and stability of measurements in CAT, NA, and SA Modes.
The External Reference setting will survive a FieldFox or Mode Preset and is
saved as part of the Instrument State.
How to set External Reference
Connect the 10 MHz External Reference to the EXT TRIG/EXT REF BNC
connector on the FieldFox top panel. Learn about External Trigger Input in
"Triggering" on page
— Press System 7.
— Then
— Then
— Then
The FieldFox may take up to 10 seconds to lock to a valid External
References source.
Keysight N9912-90001 User's Guide
GPS ON and locked on satellites
GPS ON, but NOT locked on satellites
GPS ON, but no GPS receiver is present or detected
13-8.
System Configuration.
Frequency Ref.
Freq Ref Source Int Ext.
18- 15