Chapter 3 Calibration Procedures

Calibration Security Code

To Unsecure the Power Supply for Calibration

The power supply can use a calibration security code to prevent unauthorized or accidental calibration. This procedure shows you how to unsecure the power supply for calibration from the front panel.

Calibrate

Power

1Turn on the front-panel calibration mode.

secured

Secure

Turn on the calibration mode by pressing the "Calibrate" key while simultaneously turning on the power supply then continue to hold the "Calibrate" key for about 5 seconds until a beep is heard.

If the power supply is secured, you will see the above message from the front panel for approximately one second. The "CAL MODE'' message is then displayed on the front panel.

2Move to the security code by pressing the "Secure" key.

000000 code

3Enter the security code using the knob and resolution selection keys.

003631 code

The security code is set to "HP003631" when the power supply is shipped from the factory. The security code is stored in non-volatile memory and does not change when the power has been off or after a remote interface reset.

To enter the security code from the front panel, enter only the last six digits. To enter the security code from the remote interface, you may enter up to 12 characters.

Use the resolution selection keys to move left or right between digits. Use the knob to change the digits. Notice that the security code may be different if the security code has been changed from the default setting.

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Agilent Technologies E3631A manual To Unsecure the Power Supply for Calibration, Turn on the front-panel calibration mode