Victor 81D Manuel utilisateur

DIGITAL MULTIMETER

OPERATION MANUAL

I. General

This is equipped with the LCD display

of text height 18.9mm, is a 3 3/4 digital

multimeter which has the merits of clear

reading, stable performance and high

reliability.

It could be used to measure DC voltage,

AC voltage, DC current, AC current,

resistance, temperature, capacity, frequency /

duty cycle, diode and make on-and-off test.

Meanwhile, it is available for unit symbol

display, automatic/manual range switching,

automatic power off and alarm function. The

complete machine takes an integrated circuit

which can directly drive LCD 8-bit

microprocessor and double-integrating A/D

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switching and a digital display drive offering

high resolution and high precision. Due to its

complete functions, high measurement

accuracy and convenient operation, the

multimeter is the ideal tool in laboratory and

factory as well as for radio fans and family.

Ⅱ. Open-package Inspection

Open the package box and take out the meter,

check carefully if the following accessories

are absent or damaged. If there is any absence

or damage, please contact the distributor

immediately.

Digital Multimeter 1 PC

Instruction Manual 1 copy

Test Leads 1 pair

Temperature Probe (K-Thermocouple) 1 PC

AAA (1.5v) 7# batteries 2 PCs

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Holster 1 PC

III. Safety Considerations

The design of meter is in accordance

with IEC1010 clause (the safety standard

issued by International Electrotechnical

Commission). Prior to the operation of the

instrument, please first read the safety

considerations.

1. When DC voltage above 30V, AC voltage

above 25V, current above 10mA, AC

power line with inductive load or power

line during electric fluctuation is measured,

please beware of electric shock.

2. Prior to measurement, check if the

measurement function switch is at the

correct position. Check if the meter pen is

contacted reliably, connected correctly, and

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grounded well and etc. in order to avoid

electric shock.

3. Only if the meter is used with the matched

meter pen, can it meet the requirement of

safety standard. When the line of the meter

pen is damaged, it is necessary to replace

another one of the same model or the same

electrical specification.

4. Don’t use other unconfirmed or

disapproved protector tube to replace the

protector tube inside the meter. Only the

protector tube of the same model or same

specification can be replaced. Before the

replacement, the test leads must leave the

measuring point and ensure there is no any

signal at the input terminal.

5. Don’t use other unconfirmed or

disapproved battery to replace the battery

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inside the meter. Only the battery of the

same model or same electrical

specification can be replaced. Before the

replacement, the test leads must leave the

measuring point and ensure there is no any

signal at the input terminal.

6. When the electrical measurement is made,

never let your body gets in touch with the

ground directly, and don’t touch uncovered

metal terminal, output port, lead clamp and

etc. where earth potential may exist. Dry

clothes, rubber shoes, rubber cushion and

other insulating material are usually used

to keep your body insulated against the

ground.

7. Don’t store and use it in the

high-temperature, high-humidity,

inflammable and strong magnetic field

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environment.

8. It may do damage to the meter and

endanger the operator’s safety if the

voltage value beyond the permitted

ultimate voltage value is measured. The

ultimate voltage value permitted for

measurement is marked on the instrument

panel, and never measure the value

exceeding the standard. Don’t input the

ultimate value out of regulation in order to

avoid electric shock and the damage to the

meter.

9. When the test leads is inserted into the

current socket, don’t measure any voltage

for fear that the meter should be damaged

and the operator’s safety be endangered.

10. Don’t try calibrating or repairing the

meter. When necessary, only the qualified

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professional personnel who have had

special training or gained approval can

make it.

11. During measurement, the requirement of

measurement function must be in

accordance with LCD display. Please be

sure to disconnect the line of the test leads

with the measured object first and ensure

there is no any input signal. It is forbidden

to switch the function/range selection

switch during measurement

12. When “ ” ”is shown on LCD

display, please replace battery

immediately to ensure the measurement

precision.

13. It is not allowed to insert the test leads

into the current terminal to measure

voltage!

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14. Please don’t change the circuits of the

meter freely for fear that the meter be

damaged and the safety be endangered.

15. Description of Safety Symbols

IV. Instrument Panel& Button Function

Description

1. Instrument Model Number

2.LCD Display: Display the

measured data and unit.

3. Function Button

3.1.SELECT(function

switch)：Press this

FUSED

400mA MAX

COM

10A

3-1

3-2 3-3

3-4

5-1

5-2 5-3

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button, the function could switch

between DC/AC/

3.2. RANGE(auto/manual range switch):

it’s auto range switch after power-on,

press this key switch to manual range.

Under the manual range mode , Every

pressing to this key will make the range

get to upper one.press this key for more

than 2 sec. will back to auto range

mode .

3.3 . HOLD（Data Hold）： Press this button,

the reading is locked; Press it again, the

lock is cleared and enter into normal

measurement status.

3.4 REL (Relative Value Measurement):

The relative value measurement of all

functions could be conducted by

pressing this button except the Hz/Duty

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function.(Frequency/duty cycle):press

this key to select frequency or duty

cycle measurement mode.

4.Knob Switch：It could be used to change

the measurement function and range.

5. Input Terminals

5.1.Current, Voltage, Diode, Resistance,

Capacity, Frequency, Buzzer,

Temperature“-”Input terminal.

5.2.10A“+”input terminal.

5.3.Voltage、Diode、Resistance, Capacity,

Frequency, Buzzer, Temperature and“+”

Input terminal with current less than

400mA.

V. Other Functions

Automatic Power off

During measurement, the meter will

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