3 WLAN Mode
3.6 Modulation Analysis Measurement
This parameter specifies synchronization method to use when synchronizing to the
start of the OFDM burst.
A value of Short means to search for and synchronize to an 802.11a/g/j/p (OFDM)
preamble short symbol sequence.
Short value should not be used for 802.11g DSSS-OFDM, because the DSSS-OFDM
preamble does not contain the short symbol sequence.
A value of Long means to search for and synchronize to an 802.11a/g (OFDM)
preamble long symbol sequence (also called the channel estimation sequence).
Remote Command
[:SENSe]:EVM:STSequence LONG | SHORt
[:SENSe]:EVM:STSequence?
Example
:EVM:STS LONG
:EVM:STS?
Preset
SHORt
State Saved Saved in instrument state
Range Long | Short
Backwards Compatibility
SCPI
[:SENSe]:EVM:SYNCseq LONG | SHORt
[:SENSe]:EVM:SYNCseq?
Frequency Sync (Radio Std 802.11n/ac/ax/be)
This parameter is available when Radio Std is 802.11n/ac/ax/be.
Frequency Sync determines which portion of data is used for carrier frequency offset
estimation in modulation analysis.
Remote
Command
[:SENSe]:EVM:FREQuency:SYNC PPILot | PPData | PREamble
[:SENSe]:EVM:FREQuency:SYNC?
Example
:EVM:FREQ:SYNC PPIL
:EVM:FREQ:SYNC?
Notes Available when Radio Std is 802.11n/ac/ax/be
Preamble & Pilot is the default value to keep the backward compatibility
Preamble, Pilot & Data, and Preamble only are new options for customer to choose
Preset
PPILot
State Saved Saved in instrument state
Range Preamble & Pilot | Preamble,Pilot & Data | Preamble Only
Clock Adjust
This parameter is available when Radio Std is 802.11b/g(DSSS/CCK/PBCC).
WLAN Mode User's &Programmer's Reference 1016
To Next Page