Velleman DVM 68 Operation Manual - page 2
VELLEMAN GB
1
DVM 68
LCD Auto Range Digital Multimeter
1. Description
Your DVM 68 is a autoranging professional digital multimeter with a 3 ¾ digit LCD
display. It is ideally suited for field, lab, shop, and home applications. By using the
latest in IC and display technology to significantly reduce the number of discrete
internal components, the multimeter gives you superb measuring capability as well as
the highest possible reliability.
It is capable of performing functions :
DC Voltage
AC Voltage
Resistance
AC Current
DC Current
Capacity
Frequency
Continuity
Also diodes and transistors (amplification hFE) can be tested.
1.1 Warning
Use extreme caution in the use of this device. Improper use of this device can result in
injury or death. Follow all safeguards suggested in this owner's manual in addition to
normal safety precautions in dealing with electrical circuits. Do not use this device if
you are unfamiliar with electrical circuits and testing procedures.
Not for commercial or industrial use.
1.2 A word about safety
This multimeter is designed to ensure the safest operation possible. However, safe
operation depends on you, the operator. Make sure you follow these simple safety
rules :
•
Never apply a voltage to the multimeter that exceeds the limits given in the
specifications. Never apply more than 1000V DC or 750V rms AC between an
input jack and ground.
•
Use extreme caution when working with voltages above 60V DC or 30V AC rms.
•
Always discharge filter capacitors in the power supply circuit under test before you
attach test leads.
•
Never connect to a source of voltage when you select DCA, ACA, resistance
measurement or continuity check function.
•
Always turn off power and disconnect the test leads before you replace the batteries
or fuse.
•
Never operate the multimeter unless the battery cover is in place and fully closed.
When carrying out measurements on TV or switching power circuits, always
remember that there may be high amplitude voltages pulses at test points which can
damage the meter.