Spectrum Measurements
R&S
®
ESRP
282
User Manual 1175.7445.02 ─ 08
Shows the signal level at the marker position according to the detector assigned to
the corresponding marker. The result is only displayed after the final measurement
is done. The overall measurement time depends on the dwell time.
If a limit line is active, the result can have three colors.
–
green indicates that the marker has passed the limit check.
–
yellow indicates that the marker is in the margins of the limit line.
–
red and a star (*) indicate that the marker has failed the limit check.
For more information on limit lines see the documentation of the base unit.
The result is shown only if you have assigned a detector to the measurement marker.
Remote command:
Detector:
Δ
Limit:
CALCulate<n>:MARKer<m>:FUNCtion:FMEasurement:LIMit<k>:DELTa?
CALCulate<n>:MARKer<m>:FUNCtion:FMEasurement:LIMit<k>:
CONDition ?
CALCulate<n>:DELTamarker<m>:FUNCtion:FMEasurement:LIMit<k>:
DELTa?
CALCulate<n>:DELTamarker<m>:FUNCtion:FMEasurement:LIMit<k>:
CONDition ?
Result:
CALCulate<n>:MARKer<m>:FUNCtion:FMEasurement:RESult?
CALCulate<n>:DELTamarker<m>:FUNCtion:FMEasurement:RESult?
6.1.1.9
Calculating Signal Amplitude Statistics
To measure the amplitude distribution, the R&S
ESRP has simple measurement func-
tions to determine both the APD = Amplitude Probability Distribution and CCDF =
Complementary Cumulative Distribution Function.
To determine the amplitude distribution
► To activate and configure the measurement of the amplitude probability distribution
(APD), press the "APD" softkey (see
To activate and configure the measurement of the complementary cumulative dis-
tribution (CCDF), press the "CCDF" softkey (see
Only one of the signal statistic functions can be switched on at a time. When a statistic
function is switched on, the R&S
ESRP is set into zero span mode automatically. The
R&S
ESRP measures the statistics of the signal applied to the RF input with the
defined resolution bandwidth. To avoid affecting the peak amplitudes the video band-
width is automatically set to 10 times the resolution bandwidth. The sample detector is
used for detecting the video voltage.
Measurements