User`s guide

Chapter 2 Quick Start

To Check the Rated Currents of the Power Supply

The following procedures check to ensure that the power supply produces its rated

current outputs with a short and properly responds to operation from the front panel.

For each step, use the keys shown on the left margins.

1 Turn on the power supply.

The power supply will go into the power-on / reset state; the output is disabled (the

OFF annunciator turns on); the 8V/20A* or 25V/7A** range is selected (the 8V* or

25V** annunciator turns on); and the knob is selected for voltage control.

2 Connect a short across (+) and (-) output terminals with an insulated test lead.

3 Enable the outputs.

The OFF annunciator turns off and the 8V* or 25V**, OVP, and OCP annunciators

turn on. The

CV or CC annunciator is lit depending on the resistance of the test lead.

The flashing digit can be adjusted by turning the knob. Notice that the display is in

the meter mode. “Meter mode’’ means that the display shows the actual output voltage

and current.

4 Adjust the voltage limit value to 1.0 volt.

Set the display to the limit mode (the Limit annunciator will be flashing). Adjust the

voltage limit to 1.0 volt to assure CC operation. The

CC annunciator will light.

5 Check that the front-panel ammeter properly responds to knob control.

Set the knob to the current control, and turn the knob clockwise or counter clockwise

when the display is in the meter mode (the

Limit annunciator is off). Check that the

ammeter responds to knob control and the voltmeter indicates nearly zero (actually,

the voltmeter will show the voltage drop caused by the test lead).

Power

Output

On/Off

Display

Limit

Voltage

Current

*For Agilent E3633A Model **For Agilent E3634A Model