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Making Measurements Using Spectrum Analyzer Mode
Using the Gate Utility to Simplify Time-Gated Measurements (Option 107
only)
Example: Measure a Pulsed RF signal
1. The rear panel GATE OUTPUT must be connected to EXT TRIG INPUT.
2. A TTL trigger signal must be connected to GATE TRIGGER INPUT on the
rear panel. If no trigger is present an error message is displayed and the
gate utility will not be activated.
3. Press
[PRESET_).
Connect a pulsed RF signal to the spectrum analyzer’s
INPUT 75
fi.
4. Press
(FREQUENCY]
and enter the frequency of your input signal to place
the signal at the spectrum analyzer center frequency.
5.
Press
(7AMPLITUDE),
(PEAK
SEARCH~,
C-1
and MARKER
--+REF
LVL to
bring the signal to the top of the display.
6.
Access the gate utility by pressing
CSWEEP],
Gate Control , and
GATE UTILITY.
NOTE
If the gate menus are exited without turning the gate utility off
Iby
pressing another front panel key),
press the
@!EiF)
key twice to return to the last gate utility menu used.
7. Press Define Time to set up the time domain window (the upper
window.) Change the sweep time using the T WINDOW SWP TIME
softkey so that the pulses are displayed. Press
SWEEP
DELAY and use
the knob to center the pulses in the upper window.
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