3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
Set the threshold to -60 dBm:
:CALC:MARK:PEAK:THR -60 dBm
Dependencies When Ref Level Offset changes, Peak Threshold must change by the same amount
Couplings Whenever you adjust the value of Peak Threshold manually, "Pk Threshold Line" on page 329 is turned
ON, and, if Peak Excursion is also on, the Peak Excursion Region is displayed
Preset Automatically computed
State Saved Saved in instrument state
Min The current displayed Ref Level – 200 dB. The current displayed Ref Level is the current Ref Level,
offset by the Ref Level Offset
Max The current displayed Ref Level. This means the current Ref Level, offset by the Ref Level Offset
Auto Function
Remote
Command
:CALCulate:MARKer:PEAK:THReshold:STATe OFF | ON | 0 | 1
:CALCulate:MARKer:PEAK:THReshold:STATe?
Preset
ON
Auto Threshold
Toggles whether the Peak Threshold is determined automatically or manually.
The default is ON, which means that Peak Threshold is automatically calculated.
Manually setting the Peak Threshold value sets Auto Threshold to OFF.
Remote
Command
:CALCulate:MARKer:PEAK:THReshold:AUTO[:STATe] 0 | 1 | ON | OFF
:CALCulate:MARKer:PEAK:THReshold:AUTO[:STATe]?
Example
:CALC:MARK:PEAK:THR:AUTO:STAT ON
Preset
ON
State Saved Saved in instrument state
Peak Excursion
Turns the Peak Excursion requirement on or off, and sets the excursion value. The
value defines the minimum amplitude variation (rise and fall) required for a signal to
be identified as peak. For example, if a value of 6 dB is selected, peak search
functions like the marker Next Pk Right function move only to peaks that rise and fall
6 dB or more.
When both "Peak Excursion" on page 327 and "Peak Threshold" on page 326 are ON,
a signal must rise above the Peak Threshold value by at least the Peak Excursion
value and then fall back from its local maximum by at least the Peak Excursion value
to be considered a peak.
Spectrum Analyzer Mode User's &Programmer's Reference 327
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