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Marker Function
typical EUT emissions, but sometimes you will encounter emissions for which the defaults are not
optimal. This is especially the case for emissions that vary slowly over time or have a slow repetition
rate. By lengthening the dwell times you can increase the likelihood of accurately measuring these low
repetition rate signals.
When Measure at marker is activated, the receiver makes a zero span measurement for each of the (up
to) three detectors selected, using the Dwell Time set for each detector. If the signal's repetition period is
greater than 200 ms (the default setting), the dwell time should be increased to capture at least two and
preferably more repetitions of the signal. Additionally, if you do not need or do not wish to use a detector
to make a measurement, that specific detector may be turned off.
If the Measure at Marker window is being displayed, and one of the detectors is changed, any value
being displayed for that detector changes to “---“ until the next successful reading from that detector.
Detector 1
This menu lets you select the detector to be used for Detector 1, or turn Detector 1 off. This is a 1-of-N
menu that shows the normal list of detectors, but with the “Auto” key replaced by “Off”.
Key Path Marker Function, Measure at Marker,
Remote Command :CALCulate:MAMarker:DETector[1]|2|3
OFF|NORMal|AVERage|POSitive|SAMPle|NEGative|QPEak|EAVer
age|RAVerage
:CALCulate:MAMarker:DETector[1]|2|3?
Example :CALC:MAM:DET2 QPE
Sets the detector for measure at marker detector 2 to Quasi peak
:CALC:MAM:DET OFF
Sets the detector for measure at marker detector 1 to Off
State Saved Saved in instrument state
Initial S/W Revision A.02.00
Key Path
Marker Function, Measure at Marker,
Remote Command :CALCulate:MAMarker:DETector[1]|2|3:DWELl <dwell time>
:CALCulate:MAMarker:DETector[1]|2|3:DWELl?
Example :CALC:MAM:DET2:DWEL 500 ms
Sets the detector for measure at marker detector 2 to dwell for 500 ms
State Saved Saved in instrument state
Backwards Compatibility SCPI [:SENSe]:EMI:MEASure:DETector:DWELl <dwell time>
Sets all of the detectors dwell time to the specified amount
Initial S/W Revision A.02.00
Key Path
Marker Function, Measure at Marker, Detectors