Keysight N9000B - Ref Filter; Alpha

3 VMA Mode
3.1 Digital Demod Measurement
Ref Filter
Selects the Ref Filter that represents the cascaded transmit and receive filter.
Remote
Command
[:SENSe]:DDEMod:SEGMent1|…|6:FILTer:REFerence RCOSine | RRCosine | GAUSsian
| EDGE | RECTangle | HSINe | USER | F1REC | F3RC | F4RC | SOQPSKTG | SOQPSKA
| SOQPSKB | APCOP2RC
[:SENSe]:DDEMod:SEGMent1|…|6:FILTer:REFerence?
Example
:DDEM:SEGM1:FILT:REF GAUS
:DDEM:SEGM1:FILT:REF?
Notes Reference filter types that are not available for a particular selection of modulation format are grayed-
out as below:
–
EDGE is only available for EDGE format, grayed-out for other formats
–
1REC (CPM), 3RC (CPM) and 4RC (CPM) are only available for CPM (FM) format, grayed-out for
other formats
–
SOQPSK-TG (IRIG 106-04),SOQPSKA and SOQPSKB are only available for Shaped OQPSK format,
grayed-out for other formats
Preset
RCOS
State Saved Yes
Range Raised Cosine | Root Raised Cosine | Gaussian | EDGE | Rectangular | Half Sine | User Defined | 1REC
(CPM) | 3RC (CPM) | 4RC (CPM) | SOQPSK-TG (IRIG 106-04) | SOQPSK-A | SOQPSK-B | APCO-25 P2
RC
Backwards
Compatibility
SCPI
[:SENSe]:DDEMod:FILTer:REFerence
Alpha
Determines the filter characteristics of the Raised cosine and Root-raised cosine
filters used by the instrument's digital demodulator. These characteristics apply to
both the Ref filters.
Remote Command
[:SENSe]:DDEMod:SEGMent1|…|6:FILTer:ALPHa <real>
[:SENSe]:DDEMod:SEGMent1|…|6:FILTer:ALPHa?
Example
:DDEM:SEGM1:FILT:ALPH 0.5
:DDEM:SEGM1:FILT:ALPH?
Dependencies Available for Raised Cosine and Root Raised Cosine filter only
Preset 0.5
State Saved Yes
Min 0.05
Vector Modulation Analyzer Mode User's &Programmer's Reference 340