Spectrum Measurements
R&S
®
ESR
294
User Manual 1175.7068.02 ─ 12
Decim Sep ← Save Evaluation List ← List Evaluation ← Spurious Emissions
Selects the decimal separator with floating-point numerals for the ASCII Trace export
to support evaluation programs (e.g. MS-Excel) in different languages. The values '.'
(decimal point) and ',' (comma) can be set.
Remote command:
Adjust Ref Lvl (span > 0) ← Spurious Emissions
Adjusts the reference level to the measured total power of the signal. The softkey is
activated after the first sweep with active measurement of the occupied bandwidth has
been completed and the total power of the signal is thus known.
Adjusting the reference level ensures that the signal path will not be overloaded and
the dynamic range not limited by too low a reference level. Since the measurement
bandwidth for channel power measurements is significantly lower than the signal band-
width, the signal path may be overloaded although the trace is distinctly below the ref-
erence level. If the measured channel power is equal to the reference level, the signal
path cannot be overloaded.
Remote command:
Adjust X-Axis ← Spurious Emissions
Adjusts the frequency axis of measurement diagram automatically so that the start fre-
quency matches the start frequency of the first sweep range, and the stop frequency of
the last sweep range.
Meas Start/Stop ← Spurious Emissions
Aborts/restarts the current measurement and displays the status:
"Start"
The measurement is currently running.
"Stop"
The measurement has been stopped, or, in single sweep mode, the
end of the sweep has been reached.
6.1.1.7
Measuring the Power in Zero Span
Using the power measurement function, the R&S
ESR determines the power of the
signal in zero span by summing up the power at the individual measurement points
and dividing the result by the number of measurement points. Thus it is possible to
measure the power of TDMA signals during transmission, for example, or during the
muting phase. Both the mean power and the RMS power can be measured.
For this measurement, the sample detector is activated.
Measurement results
Several different power results can be determined simultaneously:
Measurements
