Dc Voltage Performance Tests; Required Equipment; Preliminary Steps - Agilent Technologies 3458A Calibration Manual

DC Voltage Performance Tests

Required Equipment

Preliminary Steps

38 Chapter 4 Performance Verification Tests
The following equipment or its equivalent is required for these performance
tests.
•
Stable DC voltage source (Fluke 5700A or equivalent)
•
Transfer standard DMM (3458A Opt. 002 within 90 days of CAL)
•
Low thermal short (copper wire)
•
Low thermal test leads (such as Agilent 11053A, 11174A, 11058A)
1. Verify that the DC source is properly warmed up.
2. The 3458A requires a 4-hour warm-up period. If this has not been
done, turn the instrument ON and allow it to warm up before
proceeding.
3. The internal temperature of the 3458A under test must be within
5 degrees C of its temperature when last adjusted. Use the TEMP?
command to obtain the current internal temperature and compare it to
the calibration temperature obtained by executing the command CAL?
59. Record the temperatures obtained on the DC VOLTAGE TESTS
test card.
4. If the instrument self test has not been run, make certain all inputs are
disconnected and execute the TEST function. The display must read
"SELF TEST PASSED".
5. Execute the ACAL DCV command on both the transfer standard
DMM and the UUT using the front panel "Auto Cal" key and scroll
keys. This auto calibration will take approximately two minutes to
complete.
6. Configure the transfer standard DMM as follows:
-- DCV
-- NDlG 8
-- NPLC 100
-- Trig SGL
7. Configure the DMM under test as follows:
-- DCV
-- NDlG 8
-- NPLC 100
-- Trig SGL