R&S SMA100B, User Manual

Page: 374 / 581

Remote Control Commands
R&S
®
SMA100B
359 User Manual 1178.3834.02 ─ 03
Return values:
<Auto> float
Range:
1 to 65536
Example: SENS1:FILT:TYPE AUTO
Selects auto filter.
SENS1:FILT:LENG:AUTO?
Queries the automatically set filter length.
Response: 1024
Usage: Query only
Manual operation: See "Filter Length" on page 167
:SENSe<ch>[:POWer]:FILTer:LENGth[:USER] <User>
Selects the filter length for SENS:POW:FILT:TYPE USER . As the filter length works as
a multiplier for the time window, a constant filter length results in a constant measure-
ment time (see also
"About the measuring principle, averaging filter, filter length, and
achieving stable results" on page 161).
The R&S NRP power sensors provide different resolutions for setting the filter length,
depending on the used sensor type:
●
Resolution = 1 for R&S NRPxx power sensors
●
Resolution = 2
n
for sensors of the R&S NRP-Zxx family, with n = 1 to 16
Parameters:
<User> float
Range:
1 to 65536
*RST: 1
Example:
SENS1:FILT:TYPE USER
// Selects user filter mode
SENS1:FILT:LENG 16
// Sets a filter length of 16.
// E.g. using a sensor with 20 ms time window,
// the resulting measurement time is 640 ms (2x16x20 ms)
Manual operation: See "Filter Length" on page 167
:SENSe<ch>[:POWer]:FILTer:NSRatio <NSRatio>
Sets an upper limit for the relative noise content in fixed noise filter mode (
:
SENSe<ch>[:POWer]:FILTer:TYPE
). This value determines the proportion of intrin-
sic noise in the measurement results.
Parameters:
<NSRatio> float
Range:
0.001 to 1
Increment: 0.001
*RST:
0.01
SENSe, READ, INITiate and SLISt Subsystems