Calibration Procedures 3
Keysight E3633A and E3634A Service Guide 59
Constant Voltage (CV) Verifications
Constant voltage test setup
If more than one meter or if a meter and an oscilloscope are used, connect each to
the (+) and (–) terminals by a separate pair of leads to avoid mutual coupling
effects. Use coaxial cable or shielded 2-wire cable to avoid noise pick-up on the
test leads.
Voltage programming and readback accuracy
This test verifies that the voltage 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.
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 digital voltmeter between the (+) and
(–) terminals of the output to be tested as shown in Figure 3-1
2 Turn on the power supply. Select the 20V/10A
[1]
or 50V/4A
[2]
range and
enable the output by sending the commands:
3 Program the output voltage to zero volt and current to full rated value
(10.0 A)
[1]
or (4.0 A)
[2]
by sending the commands:
[1] For Keysight E3633A Model
[2] For Keysight E3634A Model
VOLT:RANG P20V (E3633A)
VOLT:RANG P50V (E3634A)
OUTP ON
VOLT 0
CURR 10 (E3633A)
CURR 4 (E3634A)
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