User`s guide

Chapter 2 Quick Start

To Use the Power Supply in Constant Voltage Mode

To set up the power supply for constant voltage (CV) operation, proceed as follows.

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

1 Connect a load to the desired output terminals.

With power-off, connect a load to the desired output terminals.

2 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.

Press * or ** key to operate the power supply in the 20V/10A* or 50V/

4A** range before proceeding to the next step. The 20V* or 50V** annunciator turns

on.

3 Set the display to the limit mode.

Notice that the Limit annunciator flashes, indicating that the display is in the limit

mode. When the display is in the limit mode, you can see the voltage and current limit

values of the power supply.

4 Adjust the knob for the desired current limit.

Check that the Limit annunciator still flashes. Set the knob for current control. The

second digit of the ammeter will be flashing. The flashing digit can be changed using

the resolution selection keys and the flashing digit can be adjusted by turning the knob.

Adjust the knob to the desired current limit.

You can use the resolution selection keys to move the flashing digit to the right or

left when setting current.

In constant voltage mode, the voltage values between the meter and limit modes

are the same, but the current values are not. Moreover, if the display is in the

meter mode, you cannot see the change of current limit value when adjusting the

knob. We recommend that you should set the display to “limit” mode to see the

change of current limit value in the constant voltage mode whenever adjusting the

knob.

Power

20V,10A

50V,4A

Display

Limit

Voltage

Current

*For Agilent E3633A Model **For Agilent E3634A Model