Agilent Technologies E1441A user service Calibration Count, Calibration Message

7.Remove the short at JM101.

8.Turn off and reassemble the function generator, taking particular care to avoid damaging the cover’s EMC gasket. Do not over-tighten the BNC connector nuts as the connector bodies are insulating plastic.

9.The function generator is now unsecured and you can enter a new security code. Be sure you take note of the new security code.

Calibration Count

The calibration count feature provides an independent “serialization” of your calibrations. You can determine the number of times that your function generator has been calibrated. By monitoring the calibration count, you can determine whether an unauthorized calibration has been performed. Since the value increments by one for each calibration, a complete calibration increases the value by approximately 85 counts.

•The calibration count is stored in non-volatilememory and does not change when power has been off or after a remote interface reset. Your function generator was calibrated before it left the factory. When you receive your function generator, read the calibration count to determine its value.

•The calibration count increments up to a maximum of 32,767 after which it wraps around to 0. There is no way provided to program or reset the calibration count. It is an independent electronic calibration “serialization” value.

Calibration Message

You can use the calibration message feature to record calibration information about your function generator. For example, you can store such information as the last calibration date, the next calibration due date, the function generator's serial number, or even the name and phone number of the person to contact for a new calibration.

You can record information in the calibration message only from the remote interface. You can read the message from either the front-panel menu or the remote interface.

•The calibration message may contain up to 40 characters. The function generator can display up to 11 characters of the message on the front panel; any additional characters are truncated.

•The calibration message is stored in non-volatilememory, and does not change when power has been off or after a remote interface reset.

176 Service Procedures Appendix D