Rohde & Schwarz AREG100A, User Manual, Page: 72 / 321

Using Power Sensors
R&S
®
AREG100A
72 User Manual 1178.7417.02 ─ 04
"Fixed Noise" The averaging factor is taken automatically in accordance to the
value
Noise/Signal Ratio . Thus, the sensor's intrinsic noise (2 stan-
dard deviations) does not exceed the specified noise content.
To avoid long measurement times when the power is too low, set a
Timeout .
Timeout is the maximum acceptable measurement time which limits
the averaging factor and therefore leads to a more unstable readout.
Remote command:
:SENSe<ch>[:POWer]:FILTer:TYPE
on page 259
Filter Length ← Sensor settings
Sets or indicates the filter length, depending on the selected filter mode.
●
"Filter > Auto" indicates the automatically adjusted filter length.
●
"Filter > User" enables you to set the filter length manually.
●
"Filter > Fixed Noise" hides the setting parameter.
Remote command:
:SENSe<ch>[:POWer]:FILTer:LENGth:AUTO?
on page 257
:SENSe<ch>[:POWer]:FILTer:LENGth[:USER]
on page 257
Noise/Signal Ratio ← Sensor settings
For Filter > Fixed Noise , sets the noise content.
Remote command:
:SENSe<ch>[:POWer]:FILTer:NSRatio
on page 258
Auto Once ← Sensor settings
Searches the optimum filter length for the current measurement conditions. The result
is indicated with the parameter
Filter Length .
See also "About the measuring principle, averaging filter, filter length, and achieving
stable results" on page 66.
Remote command:
:SENSe<ch>[:POWer]:FILTer:SONCe
on page 258
Timeout ← Sensor settings
For "Filter > Fixed Noise", sets a time limit for the averaging process.
Remote command:
:SENSe<ch>[:POWer]:FILTer:NSRatio:MTIMe
on page 258
Default Aperture Time ← Sensor settings
The sensor default setting is sufficient. Disable this parameter to specify a user-defined
aperture time per sensor, if, for example, the readings vary.
To obtain stable readings, set the Aperture Time exactly to one modulation period.
Remote command:
:SENSe<ch>[:POWer]:APERture:DEFault:STATe
on page 255
Aperture Time ← Sensor settings
If "Use Default Aperture Time > Off", defines the acquisition time per sensor.
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