Keysight 11683A - Range Switch Performance Test; Description; Equipment; Procedure

4 Maintenance Instructions
34 Keysight 11683A Operating and Service Manual
Range Switch Performance Test
The range-to-range accuracy of the 11683A Range Switch is checked to ensure a full-scale meter
reading will be obtained when the 11683A and Power Meter Range Switches are set to the same
scale.
Description
Voltage and resistance measurements are made at the rear panel output jack. Voltage
measurements are made on the higher ranges. Because precise low voltage measurements are
more difficult to make, resistance measurements are made at the lower RANGE switch settings. To
achieve the needed accuracy, the four-wire resistance measurement technique is used.
Figure 4-2 Range switch performance test setup
Equipment
Recommended equipment for performing these tests and adjustments are a digital voltmeter,
3455A, and a 4-wire cable for performing the resistance measurements (refer to Table 1-3).
Procedure
1 Set the 11683A controls as follows:
NOTE
The 4-wire cable must connect directly to the 11683A. Do not use connectors or adapters
because their series resistance will reduce measurement accuracy.
RANGE: 100 mW
FUNCTION: STANDBY
POLARITY: NORMAL