Agilent Technologies E3632A manual Checking OCP Operation, Clearing the Overcurrent Condition

Chapter 3 Front-Panel Operation

Programming Overcurrent Protection

Over Current

5Exit the OCP menu.

CHANGED

The “CHANGED” message is displayed for a second to show that the new OCP trip level is now in effect. If the OCP settings are not changed, “NO CHANGE” will be displayed. The power supply will exit the OCP menu and the display will return to the meter mode. Check that the OCP annunciator turns on.

Checking OCP Operation

To check OCP operation, raise the output current to near the trip point. Then very gradually increase the output by turning the knob until the OCP circuit trips. This will cause the power supply’s output current to drop to zero and the OCP annunciator to blink. The “OCP TRIPPED” message also appears on the display.

Clearing the Overcurrent Condition

Over Current

Display Limit

When the OCP condition occurs (the “OCP TRIPPED” message is shown on the display), the OCP annunciator blinks. When it was caused by external voltage source such as a battery, disconnect it first. The following steps show how to clear the overcurrent conditions and get back to normal mode operation. In the following steps, the display will go back to "OCP TRIPPED" if you let the display time out after about several seconds.

or

1Readjust the OCP trip level or the output current level.

Lower the output current level below the OCP trip point after pressing the

Display Limit or raise the OCP trip level by using the knob after pressing the Over Current key.

2 Move to the clear mode.

ocp on

You will see the above message after pressing the Over Current key. If you changed the output current level, press the Over Current key twice. Turn the knob to the right until the "OCP CLEAR" appears on the display.

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