15-10
Performance Verification
Model 6487 Reference Manual
Figure 15-2
Connections for 2nA to 2µA range verification
Voltage source output accuracy
Follow the steps below to verify that Model 6487 voltage source output accuracy is within
specified limits. The test involves setting the voltage source output to specific values and
then verifying that DMM voltage readings are within required limits.
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Hazardous voltages will be present during the following procedure.
Use care to avoid a shock hazard. The interlock must be closed to test
the 50V and 500V ranges. See
1.
With the power off, connect the DMM INPUT terminals to the Model 6487
V-SOURCE OUTPUT jacks (
). Be sure to observe polarity (HI to HI;
LO to LO).
2.
Turn on the DMM and Model 6487; allow them to warm up for one hour.
3.
Select the DMM DCV function and enable autoranging.
4.
Temporarily short the ends of the DMM test leads together, then enable the DMM
REL mode to null offsets. Leave REL enabled for the remainder of the tests.
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IEEE-488
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RS-232
MADE IN
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ANALOG OUT
DIGITAL I/O
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505V PK TO CHASSIS
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HI INTERLOCK
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FUSE
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400mAT
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100 VAC
120 VAC
200mAT
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220 VAC
240 VAC
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505V PK
505V PK
Model 64
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