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Chapter 4, Description of Fields
Fields
No Pk/Avg
This field is displayed when the Controls field is set to Auxiliary. This field
performs two functions: peak hold, and video averaging.
Pk Hold (peak hold) prevents the Spectrum Analyzer from erasing the previous
trace each time it sweeps. This causes the traces to ‘build-up’ on the screen until
Off, No Pk/Avg or the Meas reset key is selected. This allows the capture of
transient signals that are not displayed long enough to view during normal
operation.
Avg 1 through Avg 100 (video averaging) enables the Spectrum Analyzer to
display a trace representing the average of several measurements. The number of
samples used for measurement averaging range from 1 to 100 (see below).
No
Pk/Avg
and Off function identically. Off is provided to maintain backwards
compatibility with earlier firmware and software.
• No Pk/Avg means that peak hold and video averaging are off.
GPIB Example
“DISP CSP;CSP:TRACE:MHOLD ‘No Pk/Avg’”
• Pk Hold means that peak hold is on.
GPIB Example
“DISP CSP;CSP:TRACE:MHOLD ‘Pk Hold’”
• Avg [n] enables video averaging over [n] measurements,
where n = 1, 2, 3, 4, 5, 10, 20, 50, or 100
GPIB Example
“DISP CSP;CSP:TRACE:MHOLD ‘Avg 1’”
• Off means that peak hold and video averaging are off.
GPIB Example
“DISP CSP;CSP:TRACE:MHOLD ‘Off’”
Operating Considerations
After capturing the desired signal, you can use the HOLD function (press and
release the SHIFT key, then the Meas reset key) to prevent additional signals from
building-up on the display.
Screens Where Field is Present
CDMA REVERSE CHANNEL SPECTRUM
SPECTRUM ANALYZER