3 WLAN Mode
3.7 WLAN MIMO Modulation Analysis Measurement
Track Phase
Radio Std is NOT 802.11b/g (DSSS/CCK/PBCC)
The Track Phase parameter specifies whether the analyzer tracks phase changes
and which data part will be used to calculate the phase error correction. When
Track Phase is ON, the analyzer applies tracked phase error correction to the pilot
and data subcarriers. If Track Phase from pilot, only pilot will be used to calculate
phase error correction; if Track Phase from pilot & data, both pilot and data carriers
will be used to calculate phase error correction. This is in addition to Track
Amplitude and Track Timing error correction if selected.
Remote
Command
:CALCulate:EVMMimo:PILot:TRACk:PHASe:SOURce PILot | PDATa
:CALCulate:EVMMimo:PILot:TRACk:PHASe:SOURce?
:CALCulate:EVMMimo:PILot:TRACk:PHASe OFF | ON | 0 | 1
:CALCulate:EVMMimo:PILot:TRACk:PHASe?
Example
:CALC:EVMM:PIL:TRAC:PHAS:SOUR PIL
:CALC:EVMM:PIL:TRAC:PHAS:SOUR?
:CALC:EVMM:PIL:TRAC:PHAS 0
:CALC:EVMM:PIL:TRAC:PHAS?
Notes PDATa is only available for 802.11n/ac/ax/be
Preset
PILot
ON
State Saved Saved in instrument state
Radio Std IS 802.11b/g (DSSS/CCK/PBCC)
This parameter specifies whether to perform phase tracking, to track carrier
frequency changes during the course of the WLAN burst. The default is OFF,
because the 802.11b/g standards do not appear to call for phase tracking. If this
parameter is ON, phase tracking is performed after all frequency/phase/timing
synchronization, and before any equalization or computation of EVM.
Remote
Command
:CALCulate:EVMMimo:TRACk:PHASe OFF | ON | 0 | 1
:CALCulate:EVMMimo:TRACk:PHASe?
Example
:CALC:EVMM:TRAC:PHAS ON
:CALC:EVMM:TRAC:PHAS?
Preset OFF
WLAN Mode User's &Programmer's Reference 1240