Keysight 11683A - 5 Adjustments; Power Supply Adjustment; Description; Equipment

5 Adjustments
38 Keysight 11683A Operating and Service Manual
Adjustments
Power Supply Adjustment
The dc output of the 11683A is set to a specified level to ensure Power Meter full-scale deflection
occurs when the RANGE controls of the Calibrator and Power Meter are set to the same scale.
Description
The 11683A RANGE switch is set to the 1 mW scale and the dc voltage at the rear panel D.C.
REFERENCE OUTPUT is set to a specified level.
Equipment
The model 3455A is the recommended Digital Voltmeter used to set the power supply voltage. A
digital voltmeter that meets or exceeds the critical specifications of Table 1-3 may be substituted.
Procedure
1 Connect the 11683A rear panel DC REFERENCE OUTPUT to the digital voltmeter INPUT.
2 Set the digital voltmeter controls to provide 5-digit resolution at 145 mVdc.
3 Remove the 11683A top cover.
4 Adjust A2R1 for a digital voltmeter reading of 145.00 ±2.00 mVdc.
WARNING
The operations in this section require the instrument is operated with its covers removed and
should only be carried out by qualified service personnel.