Section 16: Verification procedure
Model 6517B Electrometer Reference Manual
16-10
6517B-901-01 Rev. C / August 2015
Voltage source verification
Voltage source output accuracy is verified by programming the voltage source to specific voltage
values and measuring the output voltage using a precision digital multimeter.
To verify the voltage source:
1. Turn on the Model 6517B and the digital multimeter. Allow both to warm up for at least two hours
before making measurements.
2. Set the DMM to the VDC function.
3. Turn autoranging on.
4. Temporarily short the DMM input leads together.
5. Enable the DMM REL mode. Leave REL enabled for the remainder of the voltage source
verification.
6. With the Model 6517B voltage source turned off, connect the DMM input leads to the Model
6517B
V-SOURCE OUT
connector. Be sure to connect the DMM input HI to the output HI, and
the DMM input LO to the output LO.
7. Set the Model 6517B voltage source range to the 100 V range, and turn the voltage source on.
8. Set the voltage source to 0.0 V, and then verify the readings are within the range specified in the
table below.
9. Repeat step 8 for each voltage listed in the 100 V range of the table below.
10. Set the Model 6517B voltage source operate off.
11. Set the Model 6517B voltage source range to the 1000 V range, and turn the voltage source
operate on.
12. Program the voltage source to 0.0 V, and verify the readings are within the range specified in the
table below.
13. Repeat step 12 for each voltage listed in the 1000 V range of the table below.
14. Repeat the procedure for negative output voltages using the same magnitudes given in the table
below.
Voltage source verification limits
Model 6517B voltage
source range
Model 6517B programmed
source output
Reading limits
18 °C to 28 °C, 1 year
100 V
0.0 V
-0.01 V to 0.01 V
100 V
25 V
24.9525 V to 25.0475 V
100 V
50 V
49.915 V to 50.085 V
100 V
75 V
74.8775 V to 75.1225 V
100 V
100 V
99.84 V to 100.16 V
1000 V
0 V
-0.1 V to 0.1 V
1000 V
250 V
249.525 V to 250.475 V
1000 V
500 V
499.15 V to 500.85 V
1000 V
750 V
748.775 V to 751.225 V
1000 V
1000 V
998.4 V to 1001.6 V
