Keysight Technologies N9340B, User Manual

Page: 75 / 172

Making Measurements
Spectrogram
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Press [FREQ], {Center Freq}, [1.8052], {GHz}, [SPAN], [5],
{MHz}.
3 Turn on the Spectrogram function.
Press [MEAS], {More 1 of 2}, {Spectrogram}.
4 Set the update interval time between two frames.
Press {Update Int. On}, rotating the knob or pressing
numeric keypads to set the update interval time.
5 Turn on Marker 1 and Marker 2.
Press [MARKER], {State On}, {Marker (2)}, {State On}.
6 Press {Frequency}, rotate knob to change the
frequency of marker as you want.
7 Press [Meas], {Spectrogram}, {Save&Load}, {Save
RAM} to save spectrogram data.
The spectrogram has been saved into a spectrogram
data file for your further use. It’s convenient for you to
load the saved file as below:
Press {Save&Load}, {Load Spctrg}, Rotating the knob to
highlight the file which will be recalled, Press {Load
Now}, the spectrogram will be loaded.
Spectrogram Monitoring with Option INM
Option INM extends the N9340B spectrogram capability
further with the ability to continuously monitor and save
spectrogram data over time not only to the analyzer’s
internal memory or a USB stick, but also directly to a PC.
With option INM users can save more than 1,500
continuous frames of data depending on the size of the
USB stick or PC memory.
Limit lines with pass/fail functionality is available in this
measurement. The N9340B will identify the failed frame
of spectrogram data with a red mark.
NOTE
When in spectrogram auto save process, the measurement
will be paused up to more than 10 seconds.