WLAN TX Measurements (Option K91 / K91n) R&S FSL
1300.2519.12 4.428 E-11
Y–Axis/Div
Opens a dialog box to modify the y–axis settings:
Auto Scaling
If activated, the scaling of the y–axis is calculated automatically.
Per Division Specifies the scaling to be used if Auto Scaling is deactivated.
Unit Specifies the y–axis unit. With the unit is dB, Auto Scaling is always
activated.
Remote: DISP:WIND2:TRAC:Y:SCAL:AUTO ON
Remote: DISP:WIND2:TRAC:Y:SCAL:DPIV 2
EVM Constell
Opens a submenu to select the error vector magnitude (EVM) or the constellation result
displays.
EVM vs Symbol/Carrier
Selects the EVM vs Symbol or EVM vs Carrier result displays.
– EVM vs Symbol
This result display shows the EVM measured over the full range of the measured input data.
The results are displayed on a per–symbol basis, with blue vertical lines marking the
boundaries of each burst. Note that burst boundary lines are only displayed if the number of
analyzed bursts is less than 250.
For IEEE 802.11a, j, g, n (OFDM) the minimum, average, and maximum traces are displayed.
For IEEE 802.11b, g (Single Carrier) two EVM traces are displayed. The trace labeled with VEC
ERR IEEE shows the error vector magnitude as defined in the IEEE 802.11b, g standards. For the
trace labeled with EVM a commonly used EVM definition is applied, which is the square root of the
momentary error power normalized by the averaged reference power.
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