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ACP Measurement
Trace/Detector
Notes When you manually select a detector (instead of selecting Auto), that detector
is used regardless of other test set settings.
The detector choices are:
• The Normal detector determines the peak of CW-like signals, and it yields
alternating maximums and minimums of noise-like signals. This is also
referred to as Rosenfell detection.
• The Average detector determines the average of the signal within the data
range. The averaging method is Power (RMS).
• The Peak detector determines the maximum of the signal within the data
range.
• The Sample detector indicates the instantaneous level of the signal at the
center of the data represented by each display point.
• The Negative Peak detector determines the minimum of the signal within
the data range.
Because they may not find a spectral component's true peak, neither average
nor sample detectors measure amplitudes of CW signals as accurately as peak
or normal, but they do measure noise without the biases of peak detection.
When a detector selection is made, the menu returns to the previous menu.
Couplings When Detector setting is “Auto” ([:SENSe]:ACPower:DETector:AUTO?),
Detector is set to what the Radio Standard defaults states (see detector section)
for all conditions of Trace Type and for all traces. When set to Manual, all
Traces use the same detector type. When Average State = Off then Trace
Types AVERage, MaxHold and MinHold will not function, since Averaging is
required to be ‘on’ for them to operate.
Only one detector type for all 3 traces is allowed.
When Meas Method is RBW or FAST, Detector is disabled.
Preset AVERage
State Saved Saved in instrument state.
Range Normal|Average|Peak|Sample|Negative Peak
Backwards Compatibility SCPI [:SENSe]:ACPR:SWEep:DETector[:FUNCtion]
Initial S/W Revision Prior to A.02.00
Modified at S/W Revision A.02.00, A.03.00