Operator`s manual

117 Signametrics
Table 9-5. Mid-Frequency AC Voltage Tests
All inputs are a sine wave at 400 Hz.
Step Range Input Minimum Reading Maximum reading
1 330 mV 10 mV 9.8650 mV 10.1350 mV
2 330 mV 190 mV 189.5950 mV 190.4050 mV
4 3.3 V 100 mV 0.098735 V 0.101265 V
5 3.3 V 1.9 V 1.897565 V 1.902435 V
6 33 V 1 V 0.98327 V 1.01673 V
7 33 V 19 V 18.97313 V 19.02687 V
8 250 V 10 V 9.864 V 10.136 V
9 250 V 190 V 189.756 V 190.244 V
Table 9-6. High-Frequency AC Voltage Tests
All inputs are at 50 kHz.
Step Range Input Minimum Reading Maximum Reading
1 330 mV 10 mV 9.707 mV 10.293 mV
2 330 mV 190 mV 188.573 mV 191.427 mV
4 3.3 V 100 mV 0.0978 V 0.1022 V
5 3.3 V 1.9 V 1.8852 V 1.9148 V
6 33 V 1 V 0.9715 V 1.0285 V
7 33 V 19 V 18.9085 V 19.0915 V
8 250 V 10 V 9.755 V 10.245 V
9 250 V 100 V 99.35 V 100.65 V
6.6 DC Current Test
The following procedure may be used to verify the accuracy of the DCI function:
1. If you have not done so, install the SM2040 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. Remove all connections from the SM2040 inputs. Select the DCI function, Autorange. Allow the SM2040 to
settle for a few seconds, and perform the Relative function.
3. Apply the following DC currents to the I,4Ω + & - terminals. Check to see that the displayed reading on the
SMX2040 is within the indicated readings range.
Table 9-7. DC Current Test
Step Range Input Minimum Reading Maximum reading
1 3.3 mA 0 mA (open) -0.0004 mA 0.0004 mA
2 3.3 mA 1 mA 0.9986 mA 1.0014 mA
3 33 mA 0 mA (open) -0.003 mA 0.003 mA
4 33 mA 10 mA 9.987 mA 10.013 mA
5 330 mA 0 mA (open) -0.060 mA 0.060 mA
6 330 mA 100 mA 99.865 mA 100.135 mA
7 2.5 A 0 A -0.00035 A 0.00035 A
8 2.5 A 1 A 0.99315 A 1.00685 A