Frequency Reference Source - Agilent Technologies FieldFox N9913A User Manual

NOTE The GPS Sync setting has the same restrictions as the Date and Time setting.
Learn more on page 184.


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 internal frequency reference source is used to make accurate and
stable measurements. To improve measurement accuracy and stability, you can
use a highly-stable external 10 MHz reference source or a precision timing signal
provided with Built-in GPS (Opt. 307).
The Frequency Reference setting will survive a FieldFox or Mode Preset and is
saved as part of the Instrument State. When resuming after Stand By, the
FieldFox will display an Unlock message while it acquires a lock to an external or
GPS source.
How to select Frequency Reference Source
 Press System 7
 Then
 Then
 Then
 Then choose from the following:
System Settings
ON
The FieldFox clock is synchronized and updated approximately every
o
second to the time of the GPS clock.
OFF
The FieldFox clock is NOT synched with GPS. When set to OFF after
o
Sync was ON, the date and time does NOT revert back to the settings before
the clock was synchronized.
Lat/Lon Format
Change the format of the GPS display on the FieldFox screen.
Choose from:
ddd°mm' ss.sss"
degrees, minutes, seconds (default setting)
o
ddd°mm.mmmmm'
o
ddd.ddddddd°
decimal degrees
o
Elevation Unit
Choose from:
m
(Meters)
o
Feet
o
System Configuration
Frequency Ref
Freq Ref Source
degrees, minutes, fractional minutes
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