Performance Verification Tests 4
Keysight 3458A Calibration Manual 63
Connect the output of the voltage source to the HI and LO Input terminals of
the transfer standard DMM. With the DMM range set to 100 mV, set the output
of the voltage source to 100 mV. Wait five minutes for the transfer standard
DMM to thermally stabilize.
11 Execute Trig SGL and read the output of the voltage source as measured with
the transfer standard DMM and record this reading in the “Transfer standard
reading” column of the DC VOLTAGE TESTS test card.
12 Move the connection from the transfer standard DMM HI and LO Input
terminals to the HI and LO Input terminals of the 3458A under test.
13 Execute Trig SGL and read the value as measured with the 3458A under test
and record this value in the “Unit under test reading” column of the DC voltage
Test Record.
14 Repeat steps 11 through 14 for each of the remaining DC voltage test points
specified in Table 4-2.
The thermal stabilization achieved for the 100 mV range is present for the 1V
and 10V ranges since these ranges use the same relays. The range relays are
opened for the 100V and 1000V ranges and therefore, have no thermal impact
on the measurement.
Table 4-2 DCV gain performance tests
DC gain test number DMM range Source output
1 100 mV 100 mV
21 V 1 V
310 V 1 V
4 10 V -1 V
5 10 V -10 V
610 V10 V
7 100 V 100 V
8
[a]
[a] NOTE: After completing test 8, decrease the 1000 V verification source output to 0 V before disconnecting.
1000 V 1000 V
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