Keysight Technologies C Series - Source Tracking Offset and Offset Reversal

Keysight N9915-90020 User’s Guide 169
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE
SA Mode Settings
— The FieldFox can also read *.ANT (Antenna) files that were created from
older Keysight Spectrum Analyzers.
— Cable and Antenna (*.csv or *.ANT) files canNOT be edited in Data Link
software.
How to create a Cable file from an S21 (NA mode) or an Insertion Loss
(CAT mode) measurement
1. Measure the S21 or Insertion Loss of a cable. In NA mode, select either
LogMag, Linear, or VSWR formats.
2. Use Manage Folders to change the active folder to CABLES. Learn how in
“Manage Files” on page 826.
3. While in NA mode, save the measurement as a *.csv file. Learn how in
“How to Save a File” on page 818.
4. In Channel Scanner or SA mode, select
Corrections, then recall the *.csv
file for correction.
Source Tracking Offset and Offset Reversal
This feature requires:
— N991xC FieldFox Combination Analyzers to have Options 209, 210, and 233
— N993xC Spectrum Analyzers to have Options 209 and 220
Source offset tracking is used to offset the Source frequency from the Receiver
frequency by a fixed offset at every tune frequency. This feature is used when
the DUT contains a frequency translation device or mixer.
How to set Tracking Offset and Offset Reversal
1. On the Receiver unit, press Measure 1
> Source > Advanced
2. Then choose one or both of the following:
— Tracking Offset Enter an offset value (Default == OFF).
—
OffsetReversal Determines whether Receiver Freq is added to or
subtracted from the Offset Freq.
—
OFF SourceFreq = Offset + RecFreq. Use to measure
Upconverters.
— ON SourceFreq = Offset - RecFreq. Use to measure
Downconverters. The source sweeps in Reverse direction.
Note: The Offset Freq. MUST be larger than the Receiver
Stop Freq.