Rohde & Schwarz NRP18A, Руководство пользователя

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Remote Control Commands
R&S
®
NRPxxA(N)
98 User Manual 1177.6017.02 ─ 05
[SENSe<Sensor>:]CORRection:SPDevice:STATe <state>
Activates or deactivates the S-parameter correction. If activated, uses the S-parameter
data set selected by
[SENSe<Sensor>:]CORRection:SPDevice:SELect
.
See also Chapter 9.8.3.3, "S-Parameter Correction" , on page 96.
Parameters:
<state> *RST: OFF
Example:
CORR:SPD:SEL 1
Selects a S-parameter correction data set.
CORR:SPD:STAT ON
Activates the S-parameter correction.
Manual operation: See "S-Parameter Correction State Locked" on page 102
9.8.3.4 S-Gamma Corrections
Using the complex reflection coefficient, you can determine the power P delivered by
the signal source with considerably greater accuracy.
The coefficient of the signal source
Γ
source
is defined by its magnitude and phase:
●
[SENSe<Sensor>:]SGAMma:MAGNitude
●
[SENSe<Sensor>:]SGAMma:PHASe
The complex reflection coefficient
Γ
sensor
of the sensor, which is also required for the
correction, is prestored in the calibration data memory for many frequencies.
Sensor Source
NRP
3-Path Diode Power Sensor
MHz to GHz, 100 pW to 200 mW (−70 dBm to +23 dBm)
SMART SENSOR TECHNOLOGY
Figure 9-3: Correction of interactions between the power sensor and the signal source
If the gamma correction is performed in combination with an S-parameter correction
(
[SENSe<Sensor>:]CORRection:SPDevice:STATe ON
), the following is taken into
account:
●
Interaction of the signal source with the S-parameter device
●
Input of the power sensor, depending on the transmission, expressed by the term
s
12
s
21
If the S-parameter correction is enabled, the interaction between the complex reflection
coefficient
Γ
sensor
of the power sensor and the reflection of port 2, expressed by
s
22
, is
always taken into account, regardless whether gamma correction is performed or not.
Configuring Basic Measurement Parameters