TRACe Subsystem (WLAN, K91 / K91n) R&S FSL
1300.2519.12 6.748 E-11
Statistics CCDF – Complementary cumulative distribution function
Up to a maximum of 201 data points will be returned in addition to a data count value. The first value in the
return data will represent the quantity of probability values that follow. Each of the potential 201 data points will
be returned as probability value and will represent the total number of samples that are equal to or exceed the
corresponding power level. Probability data will be 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 will be returned as a floating point number, with a value less than 1.
Statistics Signal Field data
IEEE 802.11a & j only
Data will be returned as an array of hexadecimal values, with each hexadecimal value representing the
24 bit long signal field for a single burst.
IEEE 802.11b only
Data will be returned as an array of hexadecimal values, with each hexadecimal value representing the
48 bit long signal field for a single burst
EVM vs Carrier
Two trace types are provided with this measurement. There is an average EVM value for each of the 53
channels or a repeating group of EVM values for each channel. The number of repeating groups will
correspond to the number of fully analyzed trains.
Each EVM value will be returned as a floating point number, expressed in units of dBm.
TRACE1 Average EVM values per channel
TRACE2 All EVM values per channel for each full train of the capture period
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 will be equal to the number of measured symbols.
Each EVM value will be returned as a floating point number, expressed in units of dBm.
IEEE 802.11a & j only
TRACE1 Minimum EVM values
TRACE2 Mean EVM values
TRACE3 Maximum EVM values
IEEE 802.11b only
TRACE1 EVM IEEE values
TRACE2 EVM Direct values
Error vs Preamble
Three traces types are available with this measurement. The basic trace types show either the
minimum, mean or maximum frequency or phase value as measured over the preamble part of the
burst.
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