Remote Control - Commands
R&S NRP-Z5x
1137.0463.12
6.12
E-7
SENSe:POWer:AVG:BUFFer:STATe[?] OFF | ON
The buffered
Continuous Average
mode is activated with
ON
and deactivated with
OFF
. In this mode,
the results generated by trigger events are collected in the sensor until the buffer is filled. All results are
then transferred as block data. The measurement rate obtained is thus higher than in the non-buffered
Continuous Average
mode. The maximum measurement rate is obtained by combining the buffered
mode with multiple triggering (see parameter
TRIGger:COUNt
). The size of the result buffer is set with
the
SENSe:POWer:AVG:BUFFer:SIZE
command.
The query yields
•
1
for
OFF,
•
2
for
ON.
Default setting:
OFF
SENSe:POWer:AVG:SMOothing:STATe[?] OFF | ON
The
ON
parameter activates a smoothing filter for modulated signals in the
Continuous Average
mode
and
OFF
deactivates it. The smoothing filter is a steep-edge digital lowpass filter used to suppress
variations of results caused by low-frequency modulation. This parameter should be activated to reduce
variations in results due to modulation when the size of the sampling window cannot or should not be
exactly adapted to the modulation period. If the selected sampling window is 5 to 9 times larger than a
modulation period, the variations in display are normally sufficiently reduced. With smoothing
deactivated, 300 to 3000 periods are required to obtain the same effect.
With smoothing deactivated, the sampling values are considered equivalent and averaged in a
sampling window, which yields an integrating behaviour of the measuring instrument. As described
above, optimum suppression of variations in the result is thus obtained when the size of the sampling
window is exactly adapted to the modulation period. Otherwise, the modulation can have a
considerable influence, even if the sampling window is much larger than the modulation period. The
behaviour can be considerably improved by subjecting sampling values to weighting (raised-von-Hann
window), which corresponds to video filtering. This is exactly what happens with activated smoothing.
Since the smoothing filter increases the inherent noise of the sensor by approx. 20 %, it should remain
deactivated if it is not required.
The query yields
•
1
for
OFF,
•
2
for
ON.
Default setting:
OFF
SENSe:SGAMma:CORRection:STATe[?] OFF | ON
SENSe:SGAMma:CORRection:STATe ON
initiates the use of the complex reflection coefficient
I
source
of the signal source defined with
SENSe:SGAMma:MAGNitude
and
SENSe:SGAMma:PHASe
for the
correction of interactions between the power sensor and the signal source. This makes it possible to
determine the power
P
delivered by the signal source with considerably greater accuracy. The complex
reflection coefficient
I
sensor
of the sensor, which is also required for the correction, is prestored in the
calibration data memory for a large number of frequencies.
