Calibration Procedures 3
Keysight E3633A and E3634A Service Guide 65
Constant Current (CC) Verifications
Constant current test setup
Follow the general setup instructions in the Measurement Techniques and the
specific instructions will be given in the following paragraphs.
Current programming and readback accuracy
This test verifies that the current programming and GPIB or RS-232 readback
functions are within specifications. Note that the readback values over the remote
interface should be identical to those displayed on the front panel. The accuracy
of the current monitoring resistor must be 0.01% or better.
You should program the power supply over the remote interface for this test to
avoid round off errors.
1 Turn off the power supply and connect a 0.01 Ω current monitoring resistor
(R
M
) across the output to be tested and a digital voltmeter across the current
monitoring resistor (R
M
).
2 Turn on the power supply. Select the 8V/20A
[1]
or 25V/7A
[2]
range and enable
the output by sending the commands:
[1] For Keysight E3633A Model
[2] For Keysight E3634A Model
VOLT:RANG P8V (E3633A)
VOLT:RANG P25V (E3634A)
OUTP ON
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