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Remote control commands
R&S
®
NRP18S-xx
65
User Manual 1178.3686.02 ─ 07
[SENSe<Sensor>:][POWer:][AVG:]SMOothing:STATe
<state>
Enables or disables the smoothing filter, a steep-edge digital lowpass filter. If you can-
not adjust the aperture time exactly to the modulation period, the filter reduces result
fluctuations caused by modulation.
Parameters:
<state>
ON | OFF
*RST:
OFF
Example:
SMO:STAT OFF
8.7.2
Burst average measurement
The burst average mode is used to measure the average power of bursts. The integra-
tion time of a measurement is not predefined but determined by the power sensor with
the aid of a burst detector. The start of a burst is detected when the measurement sig-
nal rises above a set trigger level. The measurement ends when the signal drops
below a trigger threshold.
Power
Time
Trigger level
Dropout time
Dropout tolerance
Pulse interval
Figure 8-2: Burst average parameters
To prevent power drops due to modulation from being erroneously interpreted as the
end of a pulse, you must define the dropout tolerance. The dropout tolerance is a time
interval in which the pulse end is only recognized if the signal level no longer exceeds
the trigger level.
Triggering a burst average measurement
In burst average mode, only internal trigger events from the signal are evaluated, irre-
spective of the setting of the
parameter. The
parameter is also ignored, so that the measurement interval begins exactly when the
signal exceeds the trigger level.
Configuring the measurement modes