Keysight M9421A - Equalizer

3 WLAN Mode
3.6 Modulation Analysis Measurement
This parameter specifies what type of descrambling to do when producing bit vector
results. The valid values are: All, None, Preamble Only, Preamble & Header Only.
None means no descrambling is done at all. Preamble Only means only the PLCP
preamble is descrambled. Preamble & Header Only means that the PLCP preamble
and PLCP header are descrambled. All means that all parts of the burst are
descrambled.
Normally, an 802.11b/g signal has all bits scrambled before transmission, so
normally you would want to descramble all of the bitvector results. However, when
debugging an 802.11b/g transmitter, it is sometimes helpful to disable scrambling
in the transmitter, in which case you would disable descrambling.
Remote Command
[:SENSe]:EVM:DESCramble ALL | NONE | PONLy | PHONly
[:SENSe]:EVM:DESCramble?
Example
:EVM:DESC NONE
:EVM:DESC?
Preset
ALL
State Saved Saved in instrument state
Range All | None | Preamble Only | Preamble & Header Only
Backwards Compatibility
SCPI
[:SENSe]:EVM:PREamble ALL | NONE | PONLy | PHONly
[:SENSe]:EVM:PREamble?
Equalizer
NOTE
This parameter is available when Radio Std is 802.11b/g(DSSS/CCK/PBCC).
Specifies the total length of the equalizer filter’s impulse response, in chips.
The minimum valid value for Equalizer Len is 3. The maximum valid value is 99, and
also must be less than either Max Result Length or Result Length. The value must be
an odd number. The impulse response is centered, so that it extends (EQ_FILT_LEN-
1)/2 chips on either side of t=0.
Remote Command
[:SENSe]:EVM:EQUalizer:LENGth <integer>
[:SENSe]:EVM:EQUalizer:LENGth?
[:SENSe]:EVM:EQUalizer[:STATe] OFF | ON | 0 | 1
[:SENSe]:EVM:EQUalizer[:STATe]?
Example
:EVM:EQU:LENG 23
:EVM:EQU:LENG?
:EVM:EQU ON
:EVM:EQU?
Preset 21 chips
WLAN Mode User's &Programmer's Reference 1024