208 Chapter 4
Instrument Functions: P - Z
Peak Search
Instrument Functions: P - Z
4.1.8.2 Pk Threshold
Specifies the minimum signal level for the analyzer internal peak identification routine to
recognize as a peak. To be considered a peak, a signal must rise above the
Peak Threshold
value by at least the value specified in
Peak Excursn, then fall back down by at least the
Peak Excursn. This applies to all traces and all windows. Press ESC or select another active
function to hide the threshold line. Applies to
Next Peak, Next Peak Left, and Next Peak Right.
If
Peak Search is set to Param, it also applies to Peak Search.
Key Path:
Peak Search, Search Param
Dependencies/
Couplings: This function is not available when
Y-Axis is set to Frequency instead of
Amplitude.
State Saved: Saved in instrument state.
Factory Preset: –90 dBm
Terminators: dBmV, dB
µV, dBµΑ, V, W, A
Default Terminator: dBm
Resolution/
Rounding/
Truncation: .001 dBm
Knob Increment: amp scale = LOG: 1 % of dB/div or 0.01 (the larger of the two)
amp scale = LIN: 0.1 dBm
Step Key
Increment: amp scale = LOG: dB/div
amp scale = LIN:
Range: From the current reference level to the bottom of the display range
Remote Command:
:CALCulate:
MARKer[
1]|2|3|
4:PEAK:T
HReshold
<ampl>
:CALCulate:MARKer[1]|2|3|4:PEAK:THReshold?
Remote Command Notes: CALC:MARK:PEAK:SEAR:MODE must be set to PARameter if
you want peak search to take advantage of the threshold excursion.
Example:
:CALC:MARK:PEAK:THR -60 dBm sets the threshold to -60 dBm.
See the full example for the CALC:MARK:PEAK:SEAR:MODE command
below.
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