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Appendix F: Performance Verification
VX4234
A–29
This sequence verifies the accuracy of the six DC voltage ranges.
Equipment
Requirements
Calibrator (item 1)
Coaxial Cable, one (item 2)
Dual Banana Connectors, two (item 3)
Prerequisites
All prerequisites listed on page A–22
1. Set the Calibrator to +0.0000 mV DC .
2. Connect the Calibrator to the VX4234 Voltage Input using two Dual-Banana
connectors and a Coaxial cable.
3. Set the Calibrator to +18.0 mV DC.
4. With the following commands, set the VX4234 to DC volts and for the
2
0
mV range (Function 1, Range 1). Then perform an acquisition and verify
the response relative to the limits shown in the Test Record.
set VX4234
ibwrt "F1R1"
ibrd 100
(Observe: +.01800
±
0.0000212 VDC, see Table 6)
5. Set the Calibrator to –18.0 mV DC.
6. Re-acquire and verify the response to the limits shown in the Test Record:
ibrd 100
(Observe: –.01800
±
0.0000212 VDC, see Table 6
)
7. Check the additional voltages listed in Table 6 . (Note that the first entry in
Table 6 is a repeat of steps 4 through 6 above .)
Table 6: DC Voltage Accuracy
Set Calibrator
Command To
VX4234
Response to Verify
+18.0000 mV DC
–18.0000 mV DC
(Steps 3 to 6 repeated for table
continuity)
ibwrt "F1R1"
ibrd 100
ibrd 100
+.018021 . . to +.017979 . .
–.017979 . . to –.018021 . .
+180.000 mV DC
–180.000 mV DC
ibwrt "R2"
ibrd 100
ibrd 100
+.18011 . . to +.17989 . .
–.17989 . . to –.18011 . .
+1.80000 VDC
–1.80000 VDC
ibwrt "R3"
ibrd 100
ibrd 100
+1.8008 . . to +1.7992 . .
–1.7992 . . to –1.8008 . .
DC Voltage Accuracy
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