6-62 Chapter6
Front-Panel Key Reference
Peak Search
The detection mode also affects the measurement. If in
log mode, the log detector understates the noise
response. To compensate, 2.51 dB is added to the
measurement. If the detector is in linear mode, the
firmware uses 1.049 dB as a correction value. Refer to
“Marker Noise” (
Marker, More 1 of 2, Function) for more
information on this softkey. Key access:
Search, Meas
Tools, Function
Off
Key Access: Search, Meas Tools, Function
Next Peak Places the marker on the next highest peak. The signal peak must
exceed the peak threshold value. If there is no peak, the marker will not
move. (Also see the
Peak Excursn and Peak Threshold key descriptions.)
Key Access:
Search
Next Pk Right Moves the marker to the next peak to the right of the current marker.
The signal peak must exceed the peak threshold value by the peak
excursion value. If there is no peak to the right, the marker will not
move and the No Peak Found error message will appear on the display.
(Also see the
Peak Excursn and Peak Threshold key descriptions.) Key
Access:
Search
Next Pk Left Moves the marker to the next peak to the left of the current marker.
The signal peak must exceed the peak threshold value by the peak
excursion value. If there is no peak to the left, the marker will not move
and the No Peak Found error message will appear on the display. (Also
see the
Peak Excursn and Peak Threshold key descriptions.) Key Access:
Search
Min Search Moves the active marker to the minimum detected amplitude value.
Key Access:
Search
Pk-Pk Search Finds and displays the frequency (or time, if in zero span) and
amplitude differences between the highest and lowest trace points. Key
Access:
Search
Continuous Pk
On Off
When a marker is placed on a signal and Continuous Pk (On) is pressed,
the marker will remain on the signal even if the signal changes in
frequency and amplitude. Key Access:
Search, More 1 of 2
N dB Points
On Off
Activates the N dB function. Pressing N dB Points (On) turns on the
N dB feature and activates two arrows that are N dB down from the
marker. The frequency difference between the two arrows will be
displayed in the upper right-hand corner of the display. If the feature is
unable to find data N dB below the marker, the value of –100 Hz will be
displayed in the upper right-hand corner of the display.
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