3 VMA Mode
3.9 SEM Measurement
Min/Max 0.00001/3000000
Backwards
Compatibility
SCPI
[:SENSe]:SEMask:BWIDth[1]|2:VIDeo:RATio
[:SENSe]:SEMask:BWIDth[1]|2:VIDeo:RATio:AUTO
Channel Detector
Accesses a menu of functions that enable you to control the detectors for reference
channel. The following choices are available:
AUTO
The detector selected depends on marker functions, trace functions, average
type, and the trace averaging function
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
The detector determines the average of the signal within the sweep points. The
averaging method depends upon the Average Type selection (voltage, power or
log scales)
POSitive
Peak
The detector determines the maximum of the signal within the sweep points
SAMPle
The detector indicates the instantaneous level of the signal at the center of the
sweep points represented by each display point
NEGative
Peak
The detector determines the minimum of the signal within the sweep points
Remote
Command
[:SENSe]:SEMask:DETector:CARRier[:FUNCtion] AVERage | NEGative | NORMal |
POSitive | SAMPle
[:SENSe]:SEMask:DETector:CARRier[:FUNCtion]?
[:SENSe]:SEMask:DETector:CARRier:AUTO ON | OFF | 1 | 0
[:SENSe]:SEMask:DETector:CARRier:AUTO?
Example
:SEM:DET:CARR NEG
:SEM:DET:CARR?
:SEM:DET:CARR:AUTO OFF
:SEM:DET:CARR:AUTO?
Notes When you manually select a detector (instead of selecting Auto), that detector is used regardless of
other instrument settings
Note: This detector setting affects the reference channel. There is no per-trace detector
Couplings See Couplings in "Trace Type" on page 1737
Preset
AVERage
ON
State Saved Saved in instrument state
Range
AVERage|NEGative|NORMal|POSitive|SAMPle
Vector Modulation Analyzer Mode User's &Programmer's Reference 1558
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