Improving Level Performance
R&S
®
SMA100B
171
User Manual 1178.3834.02 ─ 03
6.5 How to Calibrate the Power Level with an R&S NRP
Power Sensor
Using a R&S NRP and the user correction function of the instrument, you can achieve
a stable output level of high accuracy over a specified frequency range. The
R&S
SMA100B 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
SMA100B
1. Connect the power sensor.
Chapter 6.4.1, "Connecting R&S NRP Power Sensors to the R&S
2. Select "Clk Syn/Power Sens" > "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
ter 6.4.2, "NRP Sensor Mapping"
5. Close the dialog.
To configure and calibrate the R&S NRP in the R&S
SMA100B
Provided the power sensor is connected to the R&S
SMA100B and is assigned to a
sensor channel, we recommend that you calibrate and configure the power sensor in
the "NRP Power Viewer" dialog.
1. Select "Level" > "RF ON > Off"
2. Select "Clk Syn/Power Sens" > "NRP Power Viewer".
3. If the R&S
SMA100B has detected several connected power sensors, select the
tab of the sensor you want to use.
4. Select "Zero" to start the automatic calibration function.
Note:
Always turn the RF power off or disconnected from the sensor before zero-
ing, since the function calibrates the power sensor at zero signal power.
How to Calibrate the Power Level with an R&S NRP Power Sensor