Keysight 11683A - Page 35

Maintenance Instructions 4
Keysight 11683A Operating and Service Manual 35
2 Set the digital voltmeter controls so measurements of up to +20 Vdc may be made. All
measurements are to be 5-digit resolution.
3 Connect the equipment together as shown in Figure 4-2.
4 Set the 11683A FUNCTION control to CALIBRATE. On the table, record the dc voltage measured
in each RANGE from 100 mW to 300 μW. If the voltage measured at the 1 mW range is beyond
the limits shown on the table, when this procedure is completed, perform the Power Supply
Adjustments. Calculate and record the ratio of the voltages using the formula shown in the
table below.
5 Set the 11683A FUNCTION switch to STANDBY. Set the digital voltmeter controls to measure
resistance.
6 Measure the resistance at each RANGE setting from 300 to 3 μW to 5-digit resolution and
record the readings in the table below. Verify that each reading falls within the limits shown.
7 If any of the voltage ratios or resistance readings are incorrect, refer to the troubleshooting
information.
Range Digital voltmeter reading
Ratio (V
100 mW
/ V
range
)
Minimum Actual Maximum Minimum Actual Maximum
100 mW ______________ ---- 1.0000 ----
30 mW ______________ 3.3457 ______________ 3.3604
10 mW ______________ 10.768 ______________ 10.815
3 mW ______________ 34.394 ______________ 34.545
1 mW 143.00 mVdc ______________ 147.00 mVdc 108.76 ______________ 109.23
300 mW ______________ 343.95 ______________ 345.45
Range Digital voltmeter reading (Ohms)
Minimum Actual Maximum
300 μW 3143.3 ______________ 3157.1
100 μW 995.90 ______________ 1000.2
30 μW 315.14 ______________ 316.52
10 μW 99.749 ______________ 100.18
3 μW 31.580 ______________ 31.718