Rohde & Schwarz SMM100A, User Manual

Page: 417 / 1088

Configuring the RF signal
R&S
®
SMM100A
417 User Manual 1179.1341.02 ─ 05
Remote command:
:SENSe<ch>[:POWer]:CORRection:SPDevice:STATe
on page 707
:SENSe<ch>[:POWer]:CORRection:SPDevice:LIST?
on page 707
:SENSe<ch>[:POWer]:CORRection:SPDevice:SELect
on page 706
Enable Logging ← Sensor Settings
Activates recording of R&S NRP power sensor readings in a log file.
There is 1 log file per sensor. The log files are created automatically and filled in con-
tinuously. They are text files with predefined filename
SensLog<n>.txt
, where
<n>
indicates the connected sensor. Log files are stored on the internal memory, in the
directory
/var/user/SensorLogging
.
Each log file contains the measured value (2 readings when you work with peak sen-
sors), the sensor type, and the measurement time (timestamp). Logged data is not
overwritten. When a new measurement is started, the collected logging data is appen-
ded in the log file.
Check the used disc space regularly and remove log files to maintain storage capacity.
Note: The logging function is intended for measurements with long time intervals. It is
suitable source for data reconstructions if the connection to the sensor was interrupted.
Remote command:
:SENSe<ch>[:POWer]:LOGGing:STATe
on page 711
7.12.5 How to calibrate the power level with an R&S NRP power sensor
Using a R&S NRP power sensor and the user correction function of the instrument,
you can compensate external frequency responses. The R&S
SMM100A utilizes the
readings of the power sensor and creates a correction value table for controlling the
output level during operation.
To connect the R&S NRP to the R&S SMM100A
1. Connect the power sensor.
See Chapter 7.12.4.1, "Connecting R&S NRP power sensors to the
R&S SMM100A" , on page 406.
2. Select "RF" > "RF Measurement" > "NRP Sensor Mapping".
3. If the sensor is not detected automatically, select "Scan > Start".
The instrument scans the network and the USB connections for connected sensors
and lists all detected R&S NRP sensors in the mapping table.
4. In the "Mapping" column, assign the sensor to a sensor channel, see Chap-
ter 7.12.4.2, "NRP sensor mapping" , on page 407.
5. Close the dialog.
Improving level performance