Service manual

Remote Commands for WLAN TX Measurements
R&S
®
FSV-K91/91n/91ac/91p
215Operating Manual 1176.7649.02 ─ 04
Probability data is returned up to the power level that contains at least one sample. It is
highly unlikely that the full 201 data values will ever be returned.
Each probability value is returned as a floating point number, with a value less than 1.
Supported data formats (see FORMat[:DATA] on page 176): ASCii|REAL
5.16.10 Statistics Signal Field Data
Data is returned as an array of hexidecimal values, with each hexidecimal value repre-
senting the 24 bit (IEEE 802.11b standard: 48 bit) long signal field for a single burst.
5.16.11 EVM vs Carrier
Two trace types are provided with this measurement. There is an average EVM value
for each of the 53 (or 57/117 within th n standard) carriers or a repeating group of EVM
values for each channel. The number of repeating groups corresponds to the number
of fully analyzed trains.
Each EVM value is returned as a floating point number, expressed in units of dBm.
Supported data formats (see FORMat[:DATA] on page 176): ASCii|UINT
TRACE1 Average EVM values per channel
TRACE2 All EVM values per channel for each full train of the capture period
5.16.12 EVM vs Symbol
Three traces types are available with this measurement. The basic trace types show
either the minimum, mean or maximum EVM value, as measured over the complete
capture period.
The number of repeating groups that are returned is equal to the number of measured
symbols.
Each EVM value is returned as a floating point number, expressed in units of dBm.
Supported data formats (see FORMat[:DATA] on page 176): ASCii|REAL
Table 5-2: IEEE 802.11a, j & n
TRACE1 Minimum EVM values
TRACE2 Mean EVM values
TRACE3 Maximum EVM values
Table 5-3: IEEE 802.11b
TRACE1 EVM IEEE values
TRACE2 EVM Direct values
TRACe Subsystem (WLAN)