Remote Control Commands
R&S
®
NRPxxS(N)
111User Manual 1177.5079.02 ─ 10
Manual operation: See "Duty Cycle" on page 45
9.8.4.2 Offset Corrections
The offset accounts for external losses by adding a fixed level offset in dB.
The attenuation of an attenuator located ahead of the sensor (or the coupling attenua-
tion of a directional coupler) is taken into account with a positive offset, i.e. the sensor
calculates the power at the input of the attenuator or the directional coupler. A negative
offset can be used to correct the influence of an amplifier connected ahead.
Using S-parameters instead of a fixed offset allows more precise measurements,
because the interaction between the sensor and the component can be taken into
account. See also Chapter 9.8.4.3, "S-Parameter Correction", on page 111.
Remote commands:
[SENSe<Sensor>:]CORRection:OFFSet...........................................................................111
[SENSe<Sensor>:]CORRection:OFFSet:STATe.................................................................111
[SENSe<Sensor>:]CORRection:OFFSet <offset>
Sets a fixed offset that is added to correct the measured value.
Parameters:
<offset> Range: -200.00 to 200.00
*RST: 0
Default unit: dB
Manual operation: See "<Value>" on page 44
[SENSe<Sensor>:]CORRection:OFFSet:STATe <state>
Enables or disables the offset correction.
Parameters:
<state> *RST: OFF
Example:
CORR:OFFS:STAT ON
Manual operation: See "<State>" on page 44
9.8.4.3 S-Parameter Correction
S-parameter correction compensates for the losses and reflections introduced by a
component – such as an attenuator, directional coupler, or matching pad – that is
attached to a power sensor. Using S-parameters instead of a fixed offset increases
measurement accuracy by accounting for the interaction between the sensor and the
component. It shifts the reference plane of the sensor from its RF connector to the
input of the device that is being applied externally. For more information on the funda-
mentals of the S-parameters and for application example, see also 1GP70: Using S-
Parameters with R&S®NRP-Z Power Sensors.
Configuring Basic Measurement Parameters
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