3 Short-Range Comms & IoT Mode
3.5 Channel Power Measurement
Option Parameter Detector Behavior
functions, average type, and the trace averaging function
This option is set using "Detector Select Auto/Man" on page 681
Normal
NORMal
The detector determines the peak of the CW-like signals, and it
yields alternating maximums and minimums of noise-like signals.
This is also referred to as Rosenfell detection
Average
AVERage
The detector determines the average of the signal within the
sweep points, using RMS averaging
Peak
(Positive)
POSitive
The detector determines the maximum of the signal within the
sweep points
Sample
SAMPle
The detector indicates the instantaneous level of the signal at the
center of the sweep points represented by each display point
Negative
Peak
NEGative
The detector determines the minimum of the signal within the
sweep points
RMS
RMS
Equivalent to Average. See Notes below
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.
Remote
Command
[:SENSe]:CHPower:DETector[:FUNCtion] NORMal | AVERage | POSitive | SAMPle |
NEGative | RMS
[:SENSe]:CHPower:DETector[:FUNCtion]?
Example
:CHP:DET NORM
:CHP:DET?
Set the detector to Average, which uses RMS averaging, so this is equivalent to selecting an RMS
detector:
:CHP:DET RMS
Notes The query returns a name that corresponds to the detector type, as shown below
The RMS selection sets the detector type to AVERage with RMS averaging. Therefore, if RMS has been
selected, the query returns AVER
String Returned Definition
NORM
Normal
AVER
Average (RMS)
POS
Peak
SAMP
Sample
NEG
Negative Peak
Couplings When the Detector setting is Auto, switches to align with "Trace Type" on page 1731:
–
NORMal with Clear Write
–
AVERage with AVERage
680 Short Range Comms & IoT Mode User's &Programmer's Reference
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