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Key Access:
Places the measurement results produced by the measure at marker
Meas to List
function into a signal list element and appends the element to the end
of the signal list.
Key Access:
Turns Freq Scan On or Off. When it is turned off the analyzer will
Freq Scan
decrease the span until the span reaches 0 Hz. It does this with the
On Off
intent of keeping a signal at or near the marker centered in the screen.
When a span of 0 Hz is reached, the analyzer is tuned to the signal's
frequency. The original span is saved and restored when the Freq Scan
in turned on.
During the zoom down process the noise floor is measured and if the
amplitude at the end of the zoom is close to the noise, a message No
Signal Found is put on the screen.
Key Access:
The signal list is used for presentation, storage, and manipulation of
Signal List
the highest amplitude signals from selected detector measurements.
Signals are added to the list as measurements are made or entries can
be made for specific frequencies by manipulating markers and adding
them to the list before the measurement is made.
A signal list detail line contains: the index number; the frequency; the
amplitude for the peak, quasi-peak, or average detectors; and the delta
to limit line 1 or 2. An arrow (→) symbol is used to identify marked
signal list items. The last two columns contain one of the following
pieces of information: delta to peak data, delta to quasi-peak data, delta
to average, or comment for display or editing. Current settings for
detectors, limit lines, deltas, and dwell times are maintained and
updated.
When a signal is highlighted the marker is moved to the frequency of
the signal. If the frequency is not currently on the screen, the analyzer
is tuned to that frequency (center frequency) and then the marker is
placed on the frequency. The span remains constant unless limited by
the hardware.
Items added to the signal list appear on the display if they are within
the section of the list items displayed on the screen. As items are added
the total item count is updated on the screen. If the item has associated
measurement results, they are also displayed. If a signal has not been
measured with a detector, that area is left blank. New signals are
always appended to the end of the signal list, regardless of the sort
order.
Key Access:
Signal List
Chapter 2
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MEASURE
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MEASURE
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MEASURE
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MEASURE
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Front-Panel Key Reference
MEASURE
149
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