Victor 81A User manual

VICTOR

81A/81B

Digital

Multimeter

Operation

Manual

一.General

.General

………………………………………………

1

二.Open-Package

.Open-Package

Inspection

……………………………

1

三.

.

Safety

Note

……………………………………………

2

四.

.

Front

Panel&

Button

Function

Description

…………

4

五.

.

Other

Functions

………………………………………

5

六.Property

.Property

………………………………………………

5

七.Instrument

.Instrument

Maintenance

……………………………

1

5

八.Fault

.Fault

Elimination

……………………………………

1

6

1

一、

General

VICTOR 81A/B

is

a

steady performance, high security

3

1/2 digital

multimeter.

It

uses

LCD with

18.9mm

high figure

to make the

reading

clear.

The

digital

multimeter

has

the function of measuring

ACV, DCV,

ACA,

DCA,

Resistance,

Celsius

&

Fahrenheit

Temperature,

Diode, Continuity.

The

instrument also

has

the features of

Unit Symbol

Display,

Auto/Manual

Range

Selection,

Auto

Power

Offer

and

Alarm

Function.

It adopts

the

directly

driven

8

digits

microprocessor

and

dual-integral

A/D

converter,

which

provide the high

resolution,

high accuracy displaying

driver.

Because of

its

outstanding

functions

,

the instrument

is

an

excellent

tool

and most

suitabl e

for

lab,

factory,

maintenance

and

repair

users.

二、 Open-Package

Open-Package

Inspection

Open the gift box and take out the instrument, carefully check the

following accessories. If any accessory is missed or damaged, please

contact the manufactory at once.

● Digital Multimeter 1PC

● Operation Manual 1PC

●

Test

Leads 1SET

● Temperature Probe(K Type Thermocouple)

(Only VICTOR81B) 1PC

● AAA （1.5V ）7# Battery 2PCS

● Holster 1PC

2

三、

Safety

Note

The instrument

is

designed according

to

IEC1010 standard (safety

standard issued by International Electro technical Committee). Please read

the following before operation.

1. Caution

to

avoid the electric shock when measuring voltage higher

than 36V DC, 25AC, current higher than 10mA, AC power line with

inductance load and AC power line during the power fluctuation.

2. Before measuring, should check if the function knob

is

set in the

correct range and make sure the test leads connect reliably, link up

correctly, and insulate properly

to

avoid the electric shock

3. It meets the requirements of the safety standard only

to

use the

instrument with the equipped test leads. If the test leads are broken,

should replace them by the same type and same electric specification

test leads.

4. Do not replace the inside fuse by the unconfirmed one. Only replace

it by the same type and specification fuse. Before replacement,

should keep the test leads off the tested point

to

make sure there

is

no

any signal at the input terminal.

5. Do not replace the inside batteries by the unconfirmed one. Only

replace them by the same type and specification batteries. Before

replacement, should keep the test leads off the tested point

to

make

sure there

is

no

any signal at the input terminal.

6. When measuring electricity,

do

not connect the body with the ground

directly, and

do

not touch the possible exposed metallic terminal,

3

output socket or lead clamp with ground potential. Usually use the

dry cloth, rubber overshoes, rubber cushion and other insulated

materials

to

keep the body isolated with the ground.

7. Do not store and use the instrument in high humility, high

temperature, combustible, explosive and strong magnetic places.

8. It

is

possible

to

damage the instrument and endanger the safety of the

users when measuring the voltage over the limit. The allowed

maximum voltage

is

printed on the front panel of the instrument,

do

not measure the value over the standard safety voltage,

do

not input

the range limit specified

to

void the electric shock and instrument

damage.

9. Do not measure any voltage when connecting the test leads with the

current terminal

to

avoid damaging the instrument and endangering

the safety of the users.

10. Do not try

to

calibrate or repair the instrument, should operate it by

the specially trained or qualified professional people.

11. The function/range selection knob should be set in the correct range

when measuring. When switching the function/range selection knob,

keep the test leads off the tested object

to

make sure there

is

no

any

signal at the input terminal. Do not switch the f unction/range

selection knob when measuring.

12. When LCD displays “ ”

,

please replace the batteries in time

to

make sure the measuring accuracy.

13. Do not allow

to

measure the voltage when connecting the test leads

with the current terminal!

4

14. Do not try

to

modify the inner circuit at will

to

avoid damaging the

instrument and endangering the safety of the users.

15 ．

Safety Symbol Description

：

四、

Front

Panel

&

Button

Function

Description

1. Instrument Model Number

2.LCD Display ：Display the measured data and unit.

3.Function Button

3.1.MAX （Max

Value

Hold

）

: Press the button, the reading

is

renewe d

and the max value

is

held on LCD.

3.2.SELECT （Function Switch

）：

Press the button, DC/AC mode,

/ , ℃/℉performance switch.

3.3.HOLD

（Data Hold

）：

Press the button, the reading

is

locked, press t he

button again, the lock

is

cleared.

3.4.RANGE （Auto/Manual Range Switch ）: Auto Range

is

the original

states, press the button

to

switch

to

the Manual Range. At the Manual

Warning!

DCA

High

Voltage

!

Dangerous!

ACA

GND

DCA

&

ACA

Dual

Insulation

Meets

the

direction

of

European

IEC

Low

Battery

Fuse

5

Range mode, press the button once, the range

is

switched

to

the higher

one, press the button again

to

switch the range

to

the lowest one when

measuring the highest range, the cycle

is

in proper order from low

to

high. Keep pressing the button for 2 sec., return

to

Auto Range mode.

4.Knob Switch ：Change the measuring

function and range 。

5.Input Terminals

5.1.Current 、V oltage 、Diode 、

Resistance 、Buzzer 、

Temperature “ - ” Input terminal.

5.2.10A “ + ” input terminal.

5.3.V oltage 、Diode 、Resistance 、

Buzzer 、Temperature and Current

less than 200mA “ + ” input terminal.

五、 Other

Other

Functions

Stop working for 15 seconds during measurement, the instrument will be

auto power off (sleeping mode)

to

save the power; in the auto power offer

mode, press any function button or change the knob switch, the instrument

will get into the auto power on mode (working mode); the auto power offer

mode will be cancelled by pressing the HOLD button

to

turn on the

instrument.

六、

Property

1

．

General

Property

1-1 ．

Display

：LCD

1-2 ．Max

Display

：1999 （3 1/2 ）

counts

automatic polarity display

and

unit

display

6

1-3 ．Measuring Method ：

Dual integral

A/D converter

1-4 ．

Sampling

Rage ：

Approx.

3

times

/

sec.

1-5 ．

Over range Indication

：

Display

“ OL ”

1-6 ．

Low Battery Indication

：“ ”

symbol

appearance

；

1-7 ．

Operation

Environment

：（

0～40 ） ℃ ，

Relative

Humidity: ＜80% ；

1-8 ．

Storage

Environment

：（

0～50 ）℃，

Relative

Humidity: ＜80% ；

1-9 ．Power ：

2pcs

1.5V

batteries

（“ AAA ” 7#

battery

）；

1-10 ．Dimension （size

）：

145 × 74 ×

36mm

1-11

．

Weight

：

Approx.

185g （

Including

2pcs

1.5Vbatteries

）

1-12

．

Accessories

：

1pc

operation

manual

，

Holster

、

1pc

gift

box

，

1

set

10A

lest

leads

、1pc

K

Type

Temperature

Probe

TP01

(only

VICTOR81B) and

2pcs

1.5

batteries

。

2

．

T echnical

Property

2-1 .

Accuracy:

± (% ×

reading

＋

digits)

，

at

(23 ± 5) ℃ ，

relative

humidity ＜75%

，

One

year

calibration

guarantee since the time dispatched

from

the

factory.

。

2-2 .

Performance

（note “▲”

indicates

the instrument

has

the function

）

Model

Function

VICTOR81A

VICTOR81B

DCV

▲

ACV

▲

DCA

▲

ACA

▲

Ω

▲

Diode/Continuity

▲

Celsius/Fahrenheit ℃/℉

*

▲

7

2-3.Technic Specification (note “ * ” indicates the instrument does not have

the range)

2-3-1.DCV

1.

Insert

the red

and

black

test

leads

separately

to

and COM

input

mA

V

terminals.

2.

Turn

the

knob

switch

to

Range,

press

“ SELECT ”

button

to

switch

to

DCV

measurement

mode.

3.

This range

is

200mV,

The reading

to

measure the voltage less than

200mV

is

much accurate and stable than the reading measured in the

Range “ ” .

4.

Turn the knob switch

to

“”Range.

5.

Auto range mode

is

the original states, it displays “ AUTO ” symbol, Press

“ RANGE ” button

to

switch

to

Manual range mode, can select 200mV

、

2V 、20V 、200V 、600V Range.

6.

Connect the test leads

to

the tested point, the voltage and polarity of

point connected by red lead will be displayed on LCD.

Note

：

1.

At the Manual Range mode, if “ OL ”

is

displayed on LCD, it indicates the

tested voltage value has exceeded the present range limit, please select

the higher range

to

complete the measurement.

2.

Do not measure the voltage higher than

600V.

Otherwise, there

is

the

danger

to

damage the instrument.

3.

When measuring the high voltage, caution

to

avoid the body touches the

high voltage.

8

Input Impedance ：>10M Ω at Range 200mV

,

40M Ω at other Ranges 。

Overload Protection ：600V AC or 600V AC Peak Value ；

2-3-2.

ACV

1. Insert

the red

and

black

test leads

separately

to

and COM

input

mA

V

terminals.

2.

Turn

the

knob

switch

to

Range,

press

“ SELECT ”

button

to

switch

to

ACV measurement

mode.

3.

This range

is

200mV,

The reading

to

measure the voltage less than

200mV

is

much accurate and stable than the reading measured in the

Range “ ” .

4.Turn the knob switch

to

“”Range.

5.Auto range mode

is

the original states, it displays “ AUTO ” symbol,

Press “ RANGE ” button

to

switch

to

Manual range mode, can select

200mV 、2V 、20V 、200V 、600V Range.

6．Connect the test leads

to

the tested point, the voltage and polarity of

point connected by red lead will be displayed on LCD.

Note

：

1.

At the Manual Range mode, if “ OL ”

is

displayed on LCD, it indicates the

Accuracy

Range

VICTOR81A

VICTOR81B

Resolution

200mV

± (0.5%+4d)

100uV

2V

1mV

20V

10mV

200V

100m A

600V

± (1.0%+4d)

1V

9

tested voltage value has exceeded the present range limit, please select

the higher range

to

complete the measurement.

2.

Do not measure the voltage higher than

600V.

Otherwise, there

is

the

danger

to

damage the instrument.

3.

When measuring the high voltage, caution

to

avoid the body touches the

high voltage.

Input Impedance ：>10M Ω at Range

200mV,

40M Ω at other ranges 。

Overload Protection ：600V DC or 600V AC Peak Value ；

Frequency Response

：（

50 ～200 ）Hz

Display ：Average value response (RMS of sine wave) .

2-3-3.

DCA

1.

Insert

the

black

test

lead

to

the

COM

input

terminal,

and

red

test

lead

to

mA

V

input

terminal

(max 200 mV

)

or

10A

input

terminal

(max 10A).

2.

Turn

the

knob

switch

to

Current

Range,

press

“ SELECT ”

button

to

switch

to

DCA

measurement

mode.

Connect the test leads

to

the tested point in

series, the current value and polarity of point connected by red lead will

be displayed on LCD simultaneously.

3.

Press “ RANGE ” button

to

select auto or manual range mode.

Accuracy

Range

VICTOR81A

VICTOR81B

Resolution

200mV

± (1.5%+20d)

100uV

2V

± (0.8%+6d)

1mV

20V

10mV

200V

100mV

600V

± ( 1.0 %+6d)

1V

Victor 81A User manual

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