R&S SMB100A, Operating Manual

Page: 188 / 528

Instrument Function
R&S
®
SMB100A
173 Operating Manual 1407.0806.32 ─ 21
Auto Once ← Filter
Calculates the optimum filter length for the current measurement conditions and indi-
cates the value in the
Filter Length .
Remote command:
:SENSe<ch>[:POWer]:FILTer:SONCe
on page 320
Use Default Aperture Time
Enables you to specify a user-defined aperture time for the respective sensor.
The sensor default setting is usually sufficient. If however, the readings vary, it is rec-
ommended that you adjust the aperture time exactly to one modulation period, in order
to obtain stable readings. To specify the aperture time, see
Aperture Time .
Remote command:
:SENSe<ch>[:POWer]:APERture:DEFault:STATe
on page 316
Aperture Time
Defines the acquisition time for the respective sensor, provided the entry field is
enabled, see
Use Default Aperture Time .
For example you can adjust the aperture time exactly to one signal period, in order to
obtain a sufficient low average value.
Remote command:
:SENSe<ch>[:POWer]:APERture:TIMe
on page 316
Use SParameter - Power Sensors
Activates the use of the S-Parameter correction data of the connected power sensor.
For sensors with attenuator this checkbox is automatically checked.
Refer to the manual of the connected R&S NRP-Zxx power sensor for a description on
how to use the SParameter table.
Remote command:
:SENSe<ch>[:POWer]:CORRection:SPDevice:STATe
on page 317
Enable Logging
Activates recording of R&S NRP-Z power sensor readings.
If enabled, every value measured by a connected power sensor and indicated in the
user interface, is written to a log file. Per measurement the function logs the measured
value (2 readings when you work with peak sensors), the sensor type and the mea-
surement time (time stamp).
The function automatically creates the file name
SensLog<n>.txt
and stores the file
in
*txt
format under
/var/user/SensorLogging
on the hard disk. You can enable
logging for each connected sensor separately. If enabled, one file per sensor is written.
Note: This specific function is intended for measurements with long time intervals, or if
there is a risk that the connection to the sensor can be interrupted and you need the
data for reconstruction.
The simplified recording function continuously writes the values in the file of the corre-
sponding sensor number, like
Sens1Log.txt
. When you start a new measurement,
the existing data will not be overwritten, but added to the file.
RF Block