Power Meter Operation

Contacting Hewlett-Packard

Check the Basics

Problems can be solved by repeating what was being performed when the problem occurred. A few minutes spent in performing these simple checks may eliminate time spent waiting for instrument repair. Before calling Hewlett-Packard or returning the power meter for service, please make the following checks:

•Check that the line socket has power.

•Check that the power meter is plugged into the proper ac power source.

•Check that the power meter is switched on.

•Check that the line fuse is in working condition.

•Check that the other equipment, cables, and connectors are connected properly and operating correctly.

•Check the equipment settings in the procedure that was being used when the problem occurred.

•Check that the test being performed and the expected results are within the specifications and capabilities of the power meter.

•Check the power meter display for error messages. Refer to Chapter 4 for further information.

•Check operation by performing the self tests.

•Check with a different power sensor.

Instrument serial numbers

Hewlett-Packard makes frequent improvements to its products to enhance their performance, usability and reliability. Hewlett-Packard service personnel have access to complete records of design changes for each instrument, based on the instruments’ serial number and option designation.

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HP EPM-442A User’s Guide