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GDRVUTIL Gate Utility
GDRVUTIL
Gate Utility
Turns on or off
the
gate utility.
Syntax
utility
r
Off
7
0
/
..___...
utility
/-
on
7
Equivalent
Softkey:
GATE
UTILITY .
Option Required: Option 105. Option 101 is recommended.
Example
OUTPUT
718;"MOV
GDRVUTIL,l;"
Turns on the gate utility.
Description
When the gate utility is turned on, the spectrum analyzer screen displays two windows. The
upper window displays
the
input signal in the time domain, and the lower window displays
the
input signal in the frequency domain. If the spectrum analyzer is in zero span when the gate
utility is turned on, the frequency span of the lower window will be set to a
nonzero
frequency
span.
Before executing GDRVUTIL, you should do the following:
1. Ensure there is a trigger pulse connected to the GATE TRIGGER INPUT connector on the
rear panel of spectrum analyzer. The gate utility functions do not work if there is not a
trigger input.
2. Ensure that the GATE OUTPUT connector and the EXT TRIG INPUT connector are
connected together.
3. Set the center frequency of the analyzer to the signal’s center frequency.
4. Set the reference level of the analyzer so that the signal’s peak is within the first graticule.
The spectrum analyzer cannot turn on the gate utility if the spectrum analyzer is not properly
triggered. Once the gate utility has been turned on, you can use the commands that begin
with “GDRV” to make the time-gate measurement. Executing a gate utility command without
Option 105 installed in the spectrum analyzer generates the
COMMAND ERROR:
message and an
SRQ 140.
Programming Commands 5-213