171
Signametrics
6.1 Performance Tests
This test compares the performance of the SMU2060/64 DMM with the specifications given in Section 2.
The test is recommended as an acceptance test when the instrument is first received, and as a verification
after performing the calibration procedure. To ensure proper performance, the test must be performed
with the SMU2060 installed in a personal computer, with the covers on. The ambient temperature must
be between 18
C and 28
C. Allow the DMM to warm up at least one-half hour before performing any of
the tests. The default reading rate of the DMM should be used in each test.
6.2 DC Voltage Test
The following procedure may be used to verify the accuracy of the DCV function:
1. If you have not done so, install the DMM and place the covers back on to the computer. Ensure that
the computer has been on for at least one-half hour, with the covers on, before conducting this test.
2. Apply a high quality copper wire short to the DMM
V,
+ & -
inputs. Select the DCV function,
Autorange. Allow the DMM to settle for several seconds, and perform the
Relative
function.
3. Apply the following DC voltages to the
V,
+ & -
terminals. Check to see that the displayed reading
on the DMM is within the indicated range.
DC Voltage Test
Step
Range
Input
Minimum Reading
Maximum Reading
1
240 mV
0V (short)
- 0.0020000 m
V
0.0020000 m
V
2
240 mV
200 mV
199.98800 mV
200.01200 mV
3
240 mV
- 200 mV
- 200.01200 mV
- 199.98800 mV
4
2.4 V
0V (short)
1.9999900 V
2.0000100 V
5
2.4 V
2 V
1.9999300 V
2.0000700 V
6
2.4 V
- 2 V
- 2.0000700 V
- 1.999930 V
7
24 V
0V (short)
19.999700 V
20.000300 V
8
24 V
20 V
19.998700 V
20.001300 V
9
24 V
- 20 V
- 20.001300 V
- 19.998700 V
10
240 V
0V (short)
199.99950 V
200.00050 V
11
240 V
200 V
199.98750 V
200.01250 V
12
240 V
-200 V
- 200.01250 V
- 199.98750 V
13
330 V
0V (short)
299.99930 V
300.00070 V
14
330 V
300 V
299.95430 V
300.04570 V
15
330V
-300V
- 300.04570 V
- 299.95430 V
