Keysight Technologies N9340B, Руководство пользователя

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Making Measurements

Measuring Multiple Signals
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Measuring Multiple Signals
This section provides information on measuring multiple
signals.
Comparing Signals on the Same Screen
Using this analyzer, you can easily compare frequency
and amplitude signal differences. For example,
measuring radio or television signal spectra. The Delta
Marker function allows two signals to be compared
when both appear on the screen at the same time.
In this following example, a 50 MHz input signal is used
to measure frequency and amplitude differences
between two signals on the same screen. The Delta
Marker function is demonstrated in this example.
1 Press [PRESET] to set the analyzer to a factory default
setting.
2 Input a signal (0 dB, 50 MHz) to the RF IN connector
of the analyzer.
3 Set the analyzer start frequency, stop frequency and
reference level to view the 50 MHz signal and its
harmonics up to 100 MHz:
• Press [FREQ] > 40 > {MHz}
• Press [FREQ] > 110 > {MHz}
• Press [AMPTD] > 0 > {dBm}
4 Press [MARKER] > {Peak search} to place a marker on
the highest peak on the display (50 MHz). 
The {Next Left PK} and {Next Right PK} softkeys are
available to move the marker from peak to peak.
5 Press [MARKER] > {Delta} to anchor the first marker
(labeled as M1) and activate a delta marker.
The label on the first marker now reads 1R, indicating
that it is the reference point.
6 Move the second marker to another signal peak using
the front panel knob or by using the {Peak Search}