Rohde & Schwarz SMC100A - Sense<Ch>[:Power]:Filter:sonce; Sense<Ch>[:Power]:Filter:type

Remote Control Commands
R&S
®
SMC100A
273Operating Manual 1411.4060.32 ─ 09
:SENSe<ch>[:POWer]:FILTer:SONCe
The command activates the search for the optimum filter length for the current mea-
surement conditions. The found filter length can be retrieved with com-
mand :SENSe:POWer:FILTer:LENGth:USER?. This command is only available for
user filter mode (:SENSe:POWer:FILTer:TYPE USER).
Example:
SENS:FILT:TYPE USER
selects user filter mode.
SENS:FILT:SONC
activates the search for the optimum filter length.
SENS:FILT:LENG?
returns the found optimum filter length.
Response: 128
Usage: Event
Manual operation: See "Auto Once" on page 154
:SENSe<ch>[:POWer]:FILTer:TYPE
<Type>
The command selects the filter mode. The filter length is the multiplier for the time win-
dow and thus directly influences the measurement time.
Parameters:
<Type> AUTO | USER | NSRatio
AUTO
The filter length is automatically selected depending on the mea-
sured value. For high values, a short filter length is selected and
for low values a long filter length is selected.
USER
The filter length is set manually. As the filter length works as a
multiplier for the measurement time, this results in a constant
measurement time.
NSRatio
The filter lenghth (averaging factor) is selected so that the sen-
sor's intrinsic noise (2 standard deviations) does not exceed the
specified noise content. The desired noise content is entered
with command SENSe:FILTer:NSRatio.
To avoid very long settling times when the power is low, the
averaging factor can be limited with the Timeout parameter
(command SENSe:FILTer:NSRatio:MTIMe).
*RST:
AUTO
Example:
SENS:FILT:TYPE AUTO
selects automatic filter selection.
Manual operation: See " Filter" on page 153
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