Remote control commands
R&S
®
NRPxxA(N)
83
User Manual 1177.6017.02 ─ 08
If you deactivate the smoothing filter, 300 to 3000 periods are required to obtain the
same effect. The sampling values are considered equivalent and are averaged in a
sampling window, which yields an integrating behavior of the measuring instrument. To
obtain optimum suppression of variations in the result, exactly adapt the modulation
period to the size of the sampling window. Otherwise, the modulation can have a con-
siderable influence, even if the sampling window is much larger than the modulation
period.
Calculating the measurement time
Normally, the measurement time is calculated as follows:
MT = 2 * AC * APER + (2 * AC - 1) * 100
μ
s
with:
MT: overall measurement time
AC: average count
APER: aperture time
100
μ
s is the time for switching the chopper phase.
Accelerating measurements
Using
[SENSe<Sensor>:][POWer:][AVG:]FAST
ON
, you can accelerate the mea-
surement as follows:
●
Chopper is disabled.
●
Average count is set to 1, no matter which average count you have set.
Thus, the overall measurement time is only defined by the aperture time, and the mea-
surement time for a fast measurement is calculated as follows:
MT = APER
The fast measurement setting delivers up to 100
000
measurements per second with-
out any blind time over randomly long time periods. Programming examples are given
in
Chapter 10.2, "Performing the fastest measurement in continuous average mode"
Remote commands:
[SENSe<Sensor>:][POWer:][AVG:]APERture
......................................................................83
[SENSe<Sensor>:][POWer:][AVG:]BUFFer:CLEar
...............................................................84
[SENSe<Sensor>:][POWer:][AVG:]BUFFer:COUNt?
............................................................84
[SENSe<Sensor>:][POWer:][AVG:]BUFFer:DATA?
.............................................................. 84
[SENSe<Sensor>:][POWer:][AVG:]BUFFer:SIZE
.................................................................84
[SENSe<Sensor>:][POWer:][AVG:]BUFFer:STATe
...............................................................85
[SENSe<Sensor>:][POWer:][AVG:]FAST
............................................................................ 85
[SENSe<Sensor>:][POWer:][AVG:]SMOothing:STATe
.......................................................... 85
[SENSe<Sensor>:][POWer:][AVG:]APERture
<integration_time>
Sets the duration of the sampling window in continuous average mode. During this
time interval, the average signal power is measured.
Configuring the measurement modes
