Rohde & Schwarz R&S NRP-Z91 - Sense:range:auto[?] off; Sense:range:clevel[?] -20.0; Sense:sgamma:correction:state[?] off

Remote Control - Commands R&S NRP-Z91
1168.8579.12 6.12 E-3
If the measurement path is selected manually (SENSe:RANGe:AUTO OFF), the currently selected
m
easurement path is output. With automatic selection, the last path that was set manually is output.
Since this setting has been saved, it is immediately reset after deactivating the automatic function.
Default setting: 2 (least sensitive path)
SENSe:RANGe:AUTO[?] OFF | ON
SENSe:RANGe:AUTO ON activates the automatic selection of the measurement path and
SENSe:RANGe:AUTO OFF deactivates it.
The query yields
• 1 for OFF,
• 2 for ON.
Default setting: ON
SENSe:RANGe:CLEVel[?] –20.0 to 0.0
SENSe:RANGe:CLEVel is used to reduce the transition range between measurement paths 1 and 2 or
2 and 3 by the indicated value (in dB). This can improve the measurement accuracy for signals with a
high peak-to-average ratio, since the headroom for modulation peaks becomes larger. The
disadvantage is that the S/N ratio is reduced at the lower limits of the transition ranges.
The query yields the offset of transition ranges between measurement channels 1 and 2 or 2 and 3.
Default setting: 0.0 [dB]
SENSe:SGAMma:CORRection:STATe[?] OFF | ON
SENSe:SGAMma:CORRection:STATe ON initiates the use of the complex reflection coefficient H
source
of the signal source defined with SENSe:SGAMma:MAGNitude and SENSe:SGAMma:PHASe for the
correction of interactions between the power sensor and the signal source. This makes it possible to
determine the power P delivered by the signal source with considerably greater accuracy. The complex
reflection coefficient H
sensor
of the sensor, which is also required for the correction, is prestored in the
calibration data memory for a large number of frequencies.
Fig. 6-1 Correction of interactions between the power sensor and the signal source
If the gamma correction is made in connection with an s-parameter correction (setting
SENSe:CORRection:SPDevice:STATe ON), the interaction of the signal source with the s-parameter
device on the one hand and the input of the power sensor on the other hand (depending on the
magnitude of the term | s
12
s
21
|) is corrected. The interaction between the complex reflection coefficient
H
sensor
of the power sensor and the parameter s
22
is always taken into account when the s-parameter
correction is activated – independent of the gamma correction in connection with the signal source.