4
Performance Verification Tests
60
Keysight 3458A Calibration Manual
DC Voltage Performance Tests
Required equipment
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 Keysight 11053A, 11174A, 11058A)
Preliminary steps
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
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:
Содержание 3458A
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