R&S N 8000 Series System Manual page 142

Function
Timeout RF Fail Con-
trol
Calibration
Gain
Offset
Set Gain
Set Offset
Verification of the calibration
Calibration of the power indication was successful if the values displayed in the Calibration
window area for Gain and Offset are not equal to zero.
Reflected power display
To allow calibration, the transmitter must be operated at the required transmitter power.
Note
1. Select NetCCU > RF Probe Antenna > RF Probe Reflected.
The RF Probe Reflected window opens.
2. Use Set Gain to measure and save the DC voltage of the reflected-power test point at
nominal output power.
To abort, exit the Trigger: Set info window by pressing Back. To continue, confirm by
Note
pressing OK.
3. Switch off the transmitter.
2098.0188.72
Chapter 4
Explanation
Used to select the time that the lower threshold for the forward power
(specified as the RF Fail Limit) must be violated for before a fault mes-
sage is output. For example, if a value of 3 dB has been entered as the
RF Fail Limit and the actual value drops below that level for 8 seconds
(typical setting for Timeout for RF Fail Control), a fault message will be
output.
Execution of calibration and display of the results.
Internal measurement value of the nominal value
Deviation from the zero value of the power display
Used to calibrate the internal measurement system. Set Gain assigns
the currently measured DC voltage to the nominal value for transmitter
power.
Used to calibrate the zero point as of which the externally measured
power is displayed. Set Offset calibrates the zero point.
- 4.24 -
Commissioning
E-1