Tracking Drifting Signals - Keysight Technologies N9322C User Manual

Tracking Drifting Signals

Measuring a Source's Frequency Drift
This section provides information on measuring and tracking
signals that drift in frequency.
The analyzer will measure source stability. The maximum
amplitude level and the frequency drift of an input signal
trace can be displayed and held by using the maximum hold
function. Using the maximum hold function you can measure
and determine how much of the frequency spectrum a signal
occupies. For more information, refer to
page 162.
Use signal tracking to return a signal drifting in frequency
to the center of the display. The drifting is captured by the
analyzer using the maximum hold function.
Connect the signal generator to the analyzer RF IN.
1
2
Output a signal with the frequency of 300 MHz and
amplitude of –20 dBm.
3
Set the analyzer center frequency, span and reference level.
Press Preset. (With Preset Type of Factory)
Press Frequency > 300 > MHz
Press Span > 10 > MHz
Press Amplitude > –10 > dBm
4
Place a marker on the peak of the signal:
Press Peak Search
Press Marker > Marker To > Marker to Center
Press Span > 1 > MHz
The signal is in the center of the display.
6
Measure the excursion of the signal with maximum hold:
Press Trace/Det > Max Hold
Functions and Measurements

Tracking Drifting Signals

"Max Hold" on
51