3 Making Measurements
Measuring Multiple Signals
This section provides information on measuring multiple signals.
Comparing Signals on the Same Screen
An N9340A provides an easy function for you to compare frequency and amplitude differences
between signals, such as radio or television signal spectra. Using Delta Marker function allows you to
compare two signals 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. Delta marker is used to demonstrate this comparison.
1Press [PRESET] to set the analyzer to a factory default setting.
2Input a signal (0 dB, 50 MHz) to the RF IN connector of the analyzer.
3Set the analyzer start frequency, stop frequency and reference level to view the 50 MHz signal and its harmonics up to 100 MHz:
•Press [FREQ] > {Start Freq} > 40 > {MHz}
•Press [FREQ] > {Stop Freq} >110 > {MHz}
•Press [AMPTD] > {Ref Level} > 0 > {dBm}
4Press [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.
5Press [MARKER] > {Delta} to anchor the first marker (labeled as 1) and activate a delta marker:
The label on the first marker now reads 1R, indicating that it is the reference point.
26 | N9340A User’s Guide |
