3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
CISPR detector becomes active, the EMC Standard is set to CISPR
If the Avg Type is in Auto, and any of the CISPR detectors is selected on any active trace, the Voltage
Averaging type is auto-selected
Preset Preset returns all traces to “auto”, which will result in Normal (Rosenfell) detection for all traces
State Saved Saved in instrument state
Annunciation The detectors currently selected are annunciated in the Trace Panel on the right side of the Meas Bar
Annotation The four-letter mnemonic for the detector appears in the trace window next to the trace it applies to if
Trace Annotation is on
Backwards
Compatibility
Notes
In the X-Series, the detector selected is applied to the selected trace. This differs from previous
instruments, where the selected detector was applied to all traces, and you could only have one
detector
Backwards Compatibility Command
Example Set detector to average for all traces:
:DET AVER
Return trace 1’s detector setting:
:DET:FUNC?
Notes This is a SCPI-only legacy command to preserve the classic functionality wherein all traces are affected
when a detector is selected (in the X-Series, the detector is set on a per-trace basis)
The query returns a name that corresponds to the detector type as shown below, and indicates the
setting for Trace 1
The RMS selection sets the detector type to AVERage and the Average Type to RMS. Therefore, if RMS
has been selected, the query will return AVER
The EPOS selection sets the detector type to Peak and the EMC Standard to CISPR. A query then
returns POS
The MPOS selection sets the detector type to Peak and the EMC Standard to MIL Impulse. A query then
returns POS
The RAV parameter is not included in the command because this is not a legacy detector; nonetheless,
if it happens to be the detector on Trace 1 then RAV is returned
String Returned Definition
NORM
Normal
AVER
Average / RMS
POS
Positive peak
SAMP
Sample
NEG
Negative peak
QPE
Quasi Peak
EAV
EMI Average
RAV
RMS Average
Preset
NORMal
Spectrum Analyzer Mode User's &Programmer's Reference 523