Getting Started

Turning On the Power Meter

Turning On the Power Meter

The following steps show you how to turn on the power meter and verify that it is operating correctly.

1.Connect the power cord and turn on the power meter.

The front panel display and the green power LED light up when the power meter is switched on. The power meter performs it’s power on self test. If the self test is not successful the error annunciator turns on. If this occurs contact your Hewlett-Packard Sales and Service office for instructions on returning the power meter to Hewlett-Packard for service.

Caution

This instrument is designed for use in Installation Category II and

 

Pollution Degree 2 per IEC 1010 and 664 respectively.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Caution

This instrument has an autoranging line voltage input, be sure

 

 

 

the supply voltage is within the range of 85 to 264 Vac.

 

 

 

 

 

 

 

 

 

 

 

 

Note

If the power meter has been stored at extremely low temperatures

 

outwith the operating range of the power meter, the display may

 

take a few minutes to operate.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2. Set the display contrast if required.

 

 

 

 

 

 

 

 

The display contrast is adjusted by pressing

 

 

and

 

 

 

 

 

 

 

 

 

. If

 

 

 

 

 

 

 

 

 

 

 

these softkeys are not displayed press

 

 

repeatedly until they

 

Prev

 

 

 

appear.

 

 

 

 

 

 

 

3.Connect the power sensors.

Connect one end of each of the sensor cables to the power meter’s channel inputs and the other ends to the power sensors.

4.Making a measurement.

A minimum warm up time of 30 minutes is recommended before accurate measurements can be made.

Prior to making your first measurement you must zero and calibrate the sensor and meter combination. Refer to Chapter 2 for further information if you are not familiar with zeroing, calibrating or making measurements with a power meter.

HP EPM-442A User’s Guide

1-3