Velleman DVM66 Operation Manual

DVM66
Dual Display
Digital Multimeter

OPERATION MANUAL

GEBRUIKERSHANDLEIDING

MANUEL D’UTILISATEUR

IEC-1010

DVM66

Dual Display Digital Multimeter

1 Safety information

This multimeter has been designed according to IEC-1010 concerning electronic
measuring instruments with an over voltage category (CAT II) and pollution 2.
Follow all safety and operating instructions to ensure that the meter is used safely
and is kept in good operating condition.

1.1 Preliminary

•

When using the meter, the user must observe all normal safety rules
concerning :

- Protection against the dangers of electrical current.

- Protection of the meter against misuse.

• Full compliance with safety standards can be guaranteed only if used with test

leads supplied. If necessary, they must be replaced with the same model or
same electric ratings. Measuring leads must be in good condition.

1.2 During use

• Never exceed the protection limit values indicated in specifications for each

range of measurement.

• When the meter is linked to a measurement circuit, do not touch unused

terminals.

• Components should not be connected to the hFE socket when measuring

voltages with test leads.

• Before rotating the range selector to change functions, disconnect test leads

from the circuit under test.

• When carrying out measurements on TV or switching power circuits, always

remember that there may be high amplitude voltage pulses at test points
which can damage the meter.

VELLEMAN GB1

•

Never perform resistance measurements on live circuits.

•

Never perform capacitance measurements unless the capacitor to be measured
has been discharged fully.

•

Always be careful when working with voltages above 60V DC or 30 V AC
rms. Keep fingers behind the probe barriers while measuring.

1.3 Symbols

Important safety information, refer to the operating manual.

Dangerous voltage may be present.

Earth ground

Double insulation (Protection class II).

Indicates that the fuse must be replaced with one having the ratings indicated.

1.4 Maintenance

• Before opening the meter, always disconnect test leads from all sources of

electric current.

• For continue protection against fire, replace fuse only with the specified

voltage and current ratings :
F1 : F 500mA/250V F2 : F 10A/250V

• If any faults or abnormalities are observed, the meter can not be used any

more and it has to be checked out.

• Never use the meter unless the back cover is in place and fastened fully.

• To clean the meter, use a damp cloth and mild detergent only, do not use

abrasives or solvents on it.

VELLEMAN GB2

2. Description

This meter is an auto ranging professional measuring instrument with 3 ¾ digit
LCD, capable of performing functions :

- DC and AC voltage measurement - DC and AC current measurement

- Resistance measurement - Capacitance measurement

- Frequency measurement - Transistor and Diode test

- Audible continuity test

Some special functions and features are provided. They are very useful for
electrical and electronic measurement.
All the functions are designed to be very convenient to use. You can get used to
working with this meter quickly.

2.1 Panel configuration

 LCD Display
ô Function buttons

o Record o Rel o Range
o A-H o AC-DC/

o Hz/∆ %

í Rotary Switch
÷ V/Ω/F Input Jack
û COM Input Jack

ø mA input Jack
ù 10A Input Jack

VELLEMAN GB3

Following table shows the button configuration for all function positions.

Function ACV DCV

Ω

hFE CAP FREQ mA A

Range A/M A/M A/M M F F A/M A F F
Record o o o o o o o
Rel ooo ooo oo
A-H

##

oooo

# #

oo

AC-DC o o

o

Hz o

∆

%

ooo ooo oo

A/M: Auto and manual ranging provided. M: Manual ranging only F: Range fixed.

#

: A-H function is not valid for 200mV range.

# #

: A-H function in Freq. Measuring is different from normal. See paragraph 2.5.

2.2 Record button

• Push this button to enter into

Record mode.

- MIN MAX AVG signs light

- Main display shows the real
time measuring value.

- Secondary display shows the
recording time. At the first
minute display shows seconds
and then only minutes and
hours.

- This meter starts to record the
max. and min. value measured
and calculate the average
automatically.

VELLEMAN GB4