Keysight M9421A - Result Length

3 WLAN Mode
3.7 WLAN MIMO Modulation Analysis Measurement
The measurement interval and offset are relative to the ideal starting point of the
PLCP preamble portion of the burst. For a signal that uses the long PLCP format, the
ideal starting point of the PLCP preamble is exactly 128 symbol times (128*11 chip
times) before the start of the SFD sync pattern. For a signal that uses the short PLCP
format, the ideal starting point of the PLCP preamble is exactly 56 symbol times
(56*11 chip times) before the start of the SFD sync pattern.
Remote
Command
[:SENSe]:EVMMimo:TIME:OFFSet <integer>
[:SENSe]:EVMMimo:TIME:OFFSet?
Example
:EVMM:TIME:OFFS 15
:EVMM:TIME:OFFS?
Preset 0 symbols
State Saved Saved in instrument state
Min 0 symbols
Max If Result Length is Auto, then the specified measurement offset will be clipped to be less than or equal
to the value of Max Result Length – Meas Interval
If Result Length is Man, then the specified measurement offset will be clipped to be less than or equal
to the value of Result Length – Meas Interval
Result Length
If From HT-Sig is On:
The result length is detected from the High Throughput Signal Field. It compares the
decode lengthinformation to the Max Result Length parameter and uses the smaller
value as the measurement result length.
If From HT-Sig is Off:
When Result Length is Auto, the analyzer automatically determines the
measurement result length by burst search. It compares the detected result length
to the Max Result Length parameter and uses the smaller value as the measurement
result length.
When Result Length is Man, it compares the input result length to the Result Length
parameter and uses the smaller value as the measurement.
Remote
Command
[:SENSe]:EVMMimo:TIME:RESult:LENGth <integer>
[:SENSe]:EVMMimo:TIME:RESult:LENGth?
[:SENSe]:EVMMimo:TIME:RESult:LENGth:AUTO OFF | ON | 0 | 1
[:SENSe]:EVMMimo:TIME:RESult:LENGth:AUTO?
Example
:EVMM:TIME:RES:LENG 10
:EVMM:TIME:RES:LENG?
:EVMM:TIME:RES:LENG:AUTO ON
1235 WLAN Mode User's &Programmer's Reference