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Making Basic Measurements Using Spectrum Analyzer Mode
Tracking Unstable Signals Using Marker Track and the Maximum Hold and Minimum Hold Functions
Example: Use the marker track function to keep a drifting signal at the
center of the display and monitor its change.
This example requires a modulated signal. An acceptable signal can be easily
found by connecting an antenna to the spectrum analyzer input and tuning
to the FM broadcast band (88 to 108 MHz). Set the spectrum analyzer center
frequency for 100 MHz with a span of 20 MHz, an attenuator setting of 0
dB,
and reference level setting of approximately 9
dBmV.
Your circumstances
may be slightly different, depending on building shielding and proximity to
transmitters.
1. Connect an antenna to the spectrum analyzer input.
2. Press
[PRESET],
(FREQUENCY],
100
(MHz),
ISPAN),
20
m.
NOTE
Use a different signal frequency if no signal is available at 100 MHz in your area.
3. Press
@KiiiGKj,
9
(-1,
ATTEN
AUTO NAN , 0
@GZJ
4.
Press
m),
SPAN ZOOM , 500
IkHz).
Notice that the signal has been held in the center of the display.
4-14
NOTE
If the signal you selected drifts too quickly for the spectrum analyzer to keep up with, use a wider
span.