Instrument Function
R&S
®
SMB100A
132Operating Manual 1407.0806.32 ─ 13
NRP-Z Level Control Settings
To open the "NRP-Z Level Control" dialog, select "RF > Configure > NRP-Z Level Con-
trol" or use the MENU key under "RF".
Sensor
Selects the R&S NRP-Z power sensor for power control.
Note: In remote control, the sensors are set up using the SENSe commands. The remote
measurement is triggered by the READ query which also provides the measurement
results.
The software version of the connected power sensor can be retrieved by means of the
remote control command :SENS:POW:TYPE?.
Use the "Setup >" chapter 5.2.3.6, "NRP-Z Info/Update", on page 87 dialog to update the
sensor software.
Remote command:
[:SOURce<hw>]:POWer:SPC:SELect on page 347
State
Activates power control using the selected sensor.
The control loop periodically adjusts the generator output. After switching off, the running
loop is completed.
Remote command:
[:SOURce<hw>]:POWer:SPC:STATe on page 347
Measured Level
Indicates the current reading of the sensor.
Zero - Power Sensors
Activates the auto zero function.
Zeroing calibrates the external power sensor by adjusting its reading at zero signal power.
For this purpose, the RF power source must be switched off or disconnected from the
sensor (see tips below). R&S power sensors automatically detect the presence of any
significant input power. This aborts zeroing and generates an error message. Zeroing
can take a few seconds, depending on the sensor model; refer to the documentation of
your external power sensor for more information.
Tips for zeroing
RF Block
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