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Turn on the DMM and set it as follows. Note, if a different DMM is used, follow its
manufacturer's instructions to measure the voltages with adequate resolution and accuracy.
1.
Reset the DMM.
a.
Press the blue key.
b.
Press the Reset key.
2.
Press the DCV key to select dc volts.
3.
Set the power line cycles to 200.
a.
Press the NPLC key.
b.
Key in 200.
c.
Press the Enter key.
4.
Set the number of digits to 8.
a.
Press the blue key.
b.
Press the N key.
c.
Press the 8 key.
d.
Press the Enter key.
Linear-voltage Tests in Source Mode
1.
Connection the Model 1140A to the DMM using the low-thermal cable as is shown in
Figure 11-2.
2.
For each of the linear-voltage tests on the test report that has a unit of volts:
Set the Model 1140A to the specified voltage using the ARROW KEYS,
a.
ENCODER, or KEYPAD.
b.
Measure and record the output.
c.
Ensure each reading is within the tolerance specified.
3.
Change the SYSTEM VOLTAGE UNITS to MILLIVOLTS.
Press MENU to go the MAIN MENU (the cursor must be absent).
a.
b.
Scroll to INSTRUMENT MODE and press ENTER to go to the INSTRUMENT MODE
MENU.
Scroll to SYSTEM VOLTAGE UNITS and press ENTER.
c.
Select MILLIVOLTS and press ENTER.
d.
Figure 11-2: Setup for Source Tests
11-3
Calibration Procedure
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