Agilent Technologies E1441A Calibration Security Code, To unsecure for calibration, To re-secure

Calibration Security Code

This feature allows you to enter a security code (electronic key) to prevent accidental or unauthorized calibrations of the function generator. When you first receive your function generator, it is secured. Before you can adjust calibration constants you must unsecure the function generator by entering the correct security code.

•The security code is set to “HP_E1441” when the function generator is shipped from the factory. The security code is stored in non-volatilememory, and does not change when power has been off or after a remote interface reset.

•To secure the function generator from the remote interface, the security code may contain up to 12 alphanumeric characters as shown below. The first character must be a letter, but the remaining characters can be letters or numbers. You do not have to use all 12 characters but the first character must always be a letter.

A _ _ _ _ _ _ _ _ _ _ _ (12 characters)

To unsecure for calibration

Use the following command:

CALibration:SECure:STATe ON OFF,<secure code>

•use ON or OFF to control the security state (ON for secured, OFF for unsecured). When OFF, <secure code> string must match that sent with state ON.

Since the function generator is shipped from the factory with the security code "HP_E1441", you can initially unsecure the module by sending the following command:

CAL:SEC:STAT OFF,HP_E1441

To re-secure

Once you have unsecured the instrument, you can re-secure by sending the CAL:SEC:STAT command with state ON, optionally including the securitycode.

CAL:SEC:STAT ON[,YOUR_CODE]	secure code not required to
	re-enable security.

•If you forget your security code, you can disable the security feature by connecting a jumper inside the function generator, and then entering a new code. See the procedure on the following page.

To change security code

Once you have unsecured the instrument, you can change the security code by sending the CAL:SEC:CODE <new code> command.

CAL:SEC:CODE YOUR_NEWCODE be sure to remember this code

174 Service Procedures Appendix D