Technical data

8 Service and Maintenance
Constant Current (CC) Verifications
200 E364xA User’s and Service Guide
Figure 8-5 CC PARD (ripple and noise) connections
1 Turn off the power supply and connect the output to be
tested as shown in
Figure 8- 5 with the current
monitoring resistor 0.2 Ω (R
M2
) across output terminals.
Connect an rms voltmeter across the current monitoring
resistor as shown in
Figure 8- 5.
2 Turn on the power supply. Select the low voltage range
(8 V/3 A)
[1]
, enable the output, and set the display to the
limit mode. When the display is in the limit mode,
program the current to the full- scale rated value (3 A)
[1]
and the voltage to the full- scale rated value (8.0 V)
[1]
.
3 Divide the reading on the rms voltmeter by the load
resistance to obtain the rms current. The readings should
be within the limit of 4 mA.
[1] For the E3640A model. For other models, refer to Tabl e 8 -5 .