3 WLAN Mode
3.7 WLAN MIMO Modulation Analysis Measurement
with CP length, for example, 1x HE-LTF + 0.8 µs, 2x HE-LTF + 0.8 µs, 2x HE-LTF +
1.6 µs and 4x HE-LTF + 3.2 µs, then 1x/2x/4x HE-LTF is HE-LTF Size which should
be set here and 0.8us/1.6us/3.2us are HE Guard Interval should be set by HE Guard
Interval under mode setup/802.11ax, the HE Guard Interval should be 1/16, 1/8,
1/4, separately. The Auto Detect selection allows to detect 11ax HE-LTF Size
automatically.
Remote
Command
Radio Std = 802.11ax 20 MHz
[:SENSe]:DEMod[:WLAN]:AX20:HLTF:SIZE AUTO | S1X | S2X | S4X | SIG
[:SENSe]:DEMod[:WLAN]:AX20:HLTF:SIZE?
Radio Std = 802.11ax 40 MHz
[:SENSe]:DEMod[:WLAN]:AX40:HLTF:SIZE AUTO | S1X | S2X | S4X | SIG
[:SENSe]:DEMod[:WLAN]:AX40:HLTF:SIZE?
Radio Std = 802.11ax 80 MHz
[:SENSe]:DEMod[:WLAN]:AX80:HLTF:SIZE AUTO | S1X | S2X | S4X | SIG
[:SENSe]:DEMod[:WLAN]:AX80:HLTF:SIZE?
Radio Std = 802.11ax 80+80 MHz
[:SENSe]:DEMod[:WLAN]:AXT80:HLTF:SIZE AUTO | S1X | S2X | S4X | SIG
[:SENSe]:DEMod[:WLAN]:AXT80:HLTF:SIZE?
Radio Std = 802.11ax 160 MHz
[:SENSe]:DEMod[:WLAN]:AX160:HLTF:SIZE AUTO | S1X | S2X | S4X | SIG
[:SENSe]:DEMod[:WLAN]:AX160:HLTF:SIZE?
Example
:CALC:EVM:HLFT:SIZE S4X
:CALC:EVM:HLTF:SIZE?
Notes Only 11ax HE Guard Interval gets AUTOAuto Detect selection
Couplings When Radio Std Detection is set to Auto Detect, HE-LTF Size is coupled to “Auto Detect”
When HE Guard Interval is set to “Auto Detect”, HE-LTF Size is coupled to “Auto Detect”
When HE Guard Interval is set to “From SIG Syms”, HE-LTF Size is coupled to “From SIG Syms”
Preset
AUTO
State Saved Saved in instrument state
Range
AUTO|S1X|S2X|S4X|SIG
Backwards
Compatibility
SCPI
:CALCulate:EVM:HLTF:SIZE AUTO | S1X | S2X | S4X | SIG
:CALCulate:EVM:HLTF:SIZE?
EHT Subcarrier Spacing (Radio Std 802.11be)
Specifies the EHT subcarrier frequency spacing of the input signal. This parameter
must match the actual EHT subcarrier frequency spacing of the input signal,
WLAN Mode User's &Programmer's Reference 1228
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