HP 3562A Operating Manual page 92

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VIEWING THE INPUT SIGNALS
VIEWING THE INPUT SIGNALS
The VIEW INPUT key allows you to look at the input signals before they are filtered or meas­
ured. Appendix E explains how these displays are derived and how they differ from measure­
ment and filtered input displays. These displays can be viewed at any time, even if the
measurement is completed or the instrument is waiting for a trigger. The input displays can be
used to verify the presence of input signals or to compare an input signal with a measurement
display. The view input displays are also helpful when manually setting the input range. To
select these displays, press VIEW INPUT to display the following menu:
These are instantaneous displays of the input signals; the data they show are not necessarily
included in a measurement. The window used to compute linear spectra is labeled at the top
of the trace.
1-38
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INPUT
Displays the time domain data on Channel
TIME1
INPUT
Displays the time domain data o n Channel 2.
TIME2
INPUT
Displays the full-span frequency spectrum (FFT) of the
1
SPEC1
Channel time domain data.
INPUT
Displays the full-span frequency spectrum (FFT) of the
SPEC2 Channel 2 time domain data.
VIEW Disables updating of the view input displays.
OFF
1 .