37
Measuring Multiple Signals
Decreasing the Frequency Span Around the Signal
Decreasing the Frequency Span Around the Signal
Using the analyzer signal track function, you can quickly decrease the span while
keeping the signal at center frequency. This is a fast way to take a closer look at the
area around the signal to identify signals that would otherwise not be resolved.
This procedure uses signal tracking with span zoom to view the analyzer 50 MHz
reference signal in a 200 kHz span.
Step Action Notes
1 Select the mode. • Press Mode, Spectrum Analyzer.
2 Preset the analyzer. • Press Mode Preset.
3 Enable the internal
50 MHz amplitude
reference signal.
• Press Input/Output, RF
Calibrator, 50 MHz.
4 Set the start and stop
frequencies.
a. Press FREQ Channel, Start Freq,
20, MHz.
b. Press FREQ Channel, Stop Freq,
1, GHz.
5 Turn on the signal
tracking function.
• Press Span X Scale, Signal Track
(Span Zoom) (On).
This places a marker at the
peak,. moves the signal to the
center of the screen. and
initiates Signal Track.
See Figure 2-12.
Figure 2-12 Signal Tracking on Before Span Decrease