HQ Power DVM891 Notice D'emploi page 3

DVM891 – MULTIFUNCTIONAL DIGITAL MULTIMETER
1. Introduction
To all residents of the European Union
Important environmental information about this product
This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm
the environment.
Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a specialized
company for recycling.
This device should be returned to your distributor or to a local recycling service.
Respect the local environmental rules.
If in doubt, contact your local waste disposal authorities.
Your DVM891 is a professional digital multimeter with a 3 ½ digit LCD display. It is ideally suited for professional,
academic and home applications. The device is equipped with the latest in IC and display technology. Thanks to this
technology, the DVM891 will provide you with precise and reliable measurements for years to come.
The DVM891 measures DC and AC voltage, DC and AC current, resistance, continuity, capacitance, frequency and
temperatures. You can also test diodes and transistors (hFE).
a. Warning
Be very careful when performing measurements as improper use of this device may result in serious injuries or even
death. Take all usual precautions for working with electrical circuits and mind the safety prescriptions listed below.
Do not use this device if you are unfamiliar with electrical circuits and testing procedures.
This device is not intended for commercial or industrial use.
b. Safety Prescriptions
This multimeter was designed to ensure the safest operation possible. Nevertheless, safe operation mainly depends
on you, the user. Respect the following safety prescriptions:
• Never apply more than 1000VDC or 700Vrms AC between an input jack and ground.
• Use extreme caution when working with voltages in excess of 60VDC or 30Vrms AC.
• Always discharge the filter capacitors in a power supply circuit before attaching the test leads.
• Never connect a voltage source to the DVM891 when it is in current (DCA or ACA) mode, resistance or continuity
mode.
• Always turn off the power and disconnect the test leads prior to replacing the battery or fuse.
• The user should only operate the multimeter when the back cover is in place and securely fastened.
• When carrying out measurements on TVs or switching power circuits, you should always remember that high
voltage pulses may occur at the test points. These pulses may damage the meter.
c. Maintenance
Your DVM891 is an example of superior design and craftsmanship. The following suggestions will help you keep the
device in perfect working order:
• Do not expose the device to water. Wipe it dry immediately if it should get wet.
• Use and store the multimeter under normal temperatures. Extreme temperatures may shorten the life of the
device or damage the battery.
• Handle the multimeter with care. Dropping it may damage the circuit boards or the housing and may cause the
DVM891 to malfunction.
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