R&S FSL TRACe Subsystem (WiMAX, K92/K93)
1300.2519.12 6.861 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.
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
For the IEEE 802.16e–2005 standard, the number of sub carriers returned varies according to the FFT
size.
Each EVM value will be returned as a floating point number, expressed in units of dBm or percentage.
TRACE1 Minimum EVM values
TRACE2 Mean EVM values
TRACE3 Maximum EVM values
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.
TRACE1 Minimum EVM values
TRACE2 Mean EVM values
TRACE3 Maximum EVM values
Frequency Sweep Measurements
Currently, there is only one measurement that is performed in frequency sweep mode. This is the
Spectrum Mask measurement. No data will be returned for this measurement, should it be requested,
until such time as a measurement has been previously run.
Running an IQ measurement will not generate results for this type of measurement.
Spectrum Mask
Result data will be returned as 501 trace points in floating point format. These trace points are obtained
directly from the base system via the measurement API and the quantity is therefore a fixed value. Only
an array of Y data will be returned.
TRACE1 Clear write values
TRACE2 Max hold values
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