3 WLAN Mode
3.6 Modulation Analysis Measurement
Index: n Results Returned
68.
Partial Burst Power Avg(dBm) if the Firmware Version is below A.36 Minor or Radio Std is not
11n/ac/ax/be, returns -999.0, which means Invalid. Valid when Radio Std is 11agjp if Radio Std
Detection is auto, but invalid if Radio Std Detection is Manual
2 EVM vs. Symbol trace returns series of floating-point numbers (in percent) that represent each sample in the
EVM vs. Symbol trace of Capture Interval. The first number is the symbol 0 decision point
3 EVM vs. Carrier trace returns series of floating-point numbers (in percent) that represent each sample in the
EVM vs. Carrier trace of Capture Interval
7 Corrected measured trace returns series of floating-point numbers that alternately represent I and Q pairs of
the corrected measured trace. The magnitude of each I and Q pair are normalized to 1.0, when the IQ
Normalize is turned on. The first number is the in-phase (I) sample and the second is the quadrature-phase
(Q) sample
8 Returns Demod Bits
9 Returns 4 comma-separated scalar values of the pass/fail (0.0 = passed, or 1.0 = failed) results determined
by testing the following items
802.11 standard (OFDM) specifies that EVM or IQ offset Pass/Fail test should use average values
1.
Test result of RMS EVM(Avg)
2.
Test result of Frequency Error(Max)
3.
Test result of symbol clock error(Max)
4.
Test result of I/Q Origin Offset(Avg)
10 If radio stand is 11n, returns the decode bits of HT-SIG Signal
If radio stand is 11ac, returns the decode bits of VHT-SIG-A and VHT_SIG_B Signal. The trace length
depends on radio standards
Radio Standard Trace Length
802.11ac 20M 48 + 26
802.11ac 40M 48 + 27
802.11ac 80M 48 + 29
802.11ac 160M 48 + 29
802.11ac 80+80M 48 + 29
If radio standard is 11ah and PPDU format is greater than or equal to 2 MHz long format, return the decode
bits of SIG-A and SIG-B signal. The trace length depends on radio standard and MU/SU
SU/MU Radio Standard Trace Length
SU - 48
MU 802.11ah 2M 48 + 26
MU 802.11ah 4M 48 + 27
MU 802.11ah 8M 48 + 29
MU 802.11ah 16M 48 + 29
831 WLAN Mode User's &Programmer's Reference
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