Technical data

Service and Maintenance 8

Constant Current (CC) Verifications

E364xA User’s and Service Guide 199

CC PARD (ripple and noise)

Periodic and random deviations (PARD) in the output (ripple

and noise) combine to produce a residual AC current, as

well as an AC voltage superimposed on the DC output. CC

PARD is specified as the rms output current in a frequency

range of 20 Hz to 20 MHz with the power supply in the

constant current operation.

E3640A E3641A E3642A E3643A E3644A E3645A

0.55 mA 0.33 mA 0.75 mA 0.39 mA 1.05 mA 0.47 mA

NOTE

For better measurement results, it is recommended to make the

connection between the BNC receptacle and the output terminals as short

as possible, and to use the recommended split ferrites with the

BNC-to-BNC cable as shown in Figure 8-5.

Input

Rms voltmeter

(Front Panel Connections)

(Rear Panel Connections)

Current

monitoring

resistor

Current

monitoring

resistor

BNC cable

BNC

receptacle

Split

ferrites

Input