Victor VC9807A+ Operation Manual

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Page 1

DIGITAL

MULTIMETER

OPERATION

MANUAL

1.1.1.

GENERAL

The meter is a stable 4 1/2 multimeter with LCD display, driven by battery. It's widely used on measuring DCV,

ACV,

DC current, AC current, resistance, conductance, capacitance, diode, transistor, continuity test and fr equency, and has the function of overload pro tection, auto power off and data hold, etc.

2.2.2.

SAFETY

Meet with I EC1010 standard Read the safety note before operation. 2-1 ． Do not input a limited value over-ranged. 2-2．The voltage below 36V is safety.Toavoid electric shock, check whether the test lead s are connected correctly, whether the insulation is good when measuring over 36 V DCV or 25VACV. 2-3 ． The test leads should be removed from the testing point when changing function and range. 2-4 ． Choose correct function and range to avoid wrong operation. 2-5 ． Do not take m easurement if the battery is not fit on or rear cov er ked. 2-6. Do not input v oltage when measuring resistance. 2-7. Remov e the test leads and turn the power off before replacing battery or fuse. 2- 8 ． Specification of safety sig nal

“ ” existing dang erous volt “ ” GND “ ” dual insulation

“ ” operator must refer to the manual “ ” low battery indication

3.3.3.

SPECIFICATION

3-1

． GENERAL

GENERAL

3-1-1 .Displaying: LCD display 3-1-2 ． Max. displaying ： 19999 （ 4 1/2 ） auto-polarity display 3-1-3 ． Measuring method ： dual-slope A/D transfer 3-1-4 ． Sa m pling rate ： approx. 2- 3 times/sec 3-1-5. Max. common mode voltage: 500V DC/AC RMS 3-1-6 ． Over-range display ： the MSD displays “ 1 ” or “ - 1 ” 3-1-7 ． Low battery display：“ ” displays 3-1-8 ． Operation ： (0 ～ 40) ℃ ， relativ e hum idity <80% R.H 3-1-9. Storage: (-10 ～ 50) ℃,relative humidity <80% R.H 3-1-10. power: 9V battery (NEDA1604/6F22 or equivalent) 3-1-11. Dimension: 19 2 mm × 95 mm × 48 mm 3-1-12. Weight: approx. 455 g (including battery)

3-2

． TECHNICAL

TECHNICAL

SPECIFICATION

3-2-1 ． Accuracy ： ± ( a% × reading ＋ digit ) TEM ： ( 23 ± 5 ) ℃ ， <75% R.H ， one year 3-2-2 ． TECHNICAL

DATA

3-2-2- 1 .DCV

Input im pedance ： 1 0M Ω for all ranges Over - range protection ： 250 V DCV or A C peak factor at 2 00m V rang e,

1000 V DCV or AC peak factor at other range

Range

Accuracy

Resolution

200 mV

± (0 .1 %+ 5 )

0.01mV

0.0001 V

20V

0.001 V

200V

0.01 V

1000V

± (0. 2 %+5)

0.1 V

3-2-2-2.ACV

Input resistance: 2 M Ω for all ranges Overload protection: Range 200mV: DC 250V or AC peak value.

Other ranges: DC 1000V or AC peak value

Frequency response ： below 200V ： (40~400)H z ， 750V range: (40~200)H z Displaying ： 1): sine wave RMS （ mean value response ）

2): Some can’t turn to “ 0 ” which is normal phenomenon; it can’t affect the

test accuracy

3-2-2-3.DCA

Max. measuring v olt drop: 200 mV Max. input current: 2 0A （ less than 10 seconds ） Overload protection: 0.2A / 250V self resume fuse ; 20A range without fuse.

3-2-2-4.ACA

Max. measuring v olt drop ： 200 m V Max. input current ： 2 0A （ less than 1 0 seconds ） Overload protection ： 0.2A / 250V self resume fuse ， 2 0A range without fuse. Frequency response ： 40H z ~200Hz Displaying ： sine wave RMS （ mean value response ）

3-2-2- 5 . RESISTANCE （ Ω ）

Open voltage ： less than 3 V Overload protection ： 250V DCV or ACV peak factor

Note

Note：In 200 Ω range，should mak e the test leads s hort, and measure the resistance of th e

wire, then, subtracts from the actual measuring value.

Range

Accuracy

Resolution

± (0. 8 %+ 2 5)

1m V

20V

10m V

200V

100m V

750 V

± ( 1.0 %+ 2 5)

1 V

Range

Accuracy

Resolution

2 00u A

± (0.5%+4)

0. 0 1 u A

2mA

0.0001mA

20mA

0.001m A

200mA

± (0.8%+6)

0.01m A

20A

± (2.0%+15)

0.001 A

Range

Accuracy

Resolution 200mA

± (1. 5 %+25)

0.1mA

20A

± (2.5%+35)

1 0 mA

Range

Accuracy

Resolution

200 Ω

± (0. 4 %+1 0 )

0. 0 1 Ω

2k Ω

± ( 0.4 %+ 5)

0. 1 Ω

20k Ω

1 Ω

200k Ω

10 Ω

2M Ω

1 00 Ω

200M Ω

± 【 5 % (reading-10.00) + 30 】

10 k Ω

3-2-2-6.CAPACITANCE

Testing frequency: 400Hz Overload protection ： 36V DCV orACV peak factor ;630mA/250V fuse protection

3-2-2-7.FREQUENCY

Input sensitivity ： 120 m V RMS Overload protection ： 250V DC or AC peak factor (less than 10sec.) Note: 200kHz maybe can’t return to “ 0 ” ,this phenom enon is n ormal, it can’t affect

the test accuracy.

3-2-2-8.DIODE AND CONTINUITY TEST

Overload protection ： 250V DC or AC peak factor Warning: do not input any voltage value at this range for safety!

3-2-2-9. hFE

3-2-2-10. Conductance （ re sistance range: 10 , 000M Ω -10M Ω ）

Open voltage is approx:3V

4.operation

4-1

． FrFrFr

ooo

ntntnt

panel

1 ． L CD ： display the measured value 2 -1 Power switch ： turn on or off the power 2-2. Backlight key: turn on or off the power 2-3. hFE testing terminal ： for measuring

transistor hFE

2-4. HOLD key ： press the key down, the

measured value will be hold and “ H ” signal appears; press it down again, “ H ” signal disappears and out of the H OLD mode.

2-5. Continuity b uzzer key 3 ． Knob switch: for changing function and range

4. Testing term inal for 20A current

5. Testing term inal for less than 200 mA current and conductance

Range

Accuracy

Resolution

20nF

± ( 4.0 %+ 5 0)

10 pF

2uF

100 0 pF

200uF

10nF

Range

Accuracy

Resolution

20 k H z

± ( 1.5 %+ 2 5 )

10H z

200kHz

100Hz

RANGE

DISPLAYING VALUE

TEST CONDITION

D iode forward volt drop

Forward DC current is

approx. 1 mA ，

backward voltage is

approx. 3V

Buzzer rings, the impedance between the two testing points is less than (70 ± 20) Ω

O pen voltage is

approx. 3V

Range

Scope

Testing condition

hFE NPN or PNP

0~1000

Base DC current is approx. 10u A ， Vce is approx. 3V

Range

Accuracy

Resolution

(0 . 1-100)nS

± ( 1 .0%+ 30)

0. 1nS

Page 2

6. Common ground

7. Terminal for

V oltage,resistance, and frequency testing

4-2

． DCV

DCV

measurement

4-2-1 ． Apply the black test leads to “ COM ” terminal and the red one to “ V/ Ω /Hz ” terminal.

4-2-2 ． Switch the knob to a p roper DCV r ange, t hen, connect the test leads

cross the m easured circuit, t he voltage and polarity of the point which connected with the red test lead will be displayed.

NOTE

:::

1 ． If the voltage under measured is unclear beforehand, should set the range knob to the

highest range, then, switch to a p roper range according to the displaying value.．If LC D displays

“ 1”，

it m eans overrang e, the range knob must be switched to a hig her rang e.

2 ． D o not input a v oltage over 1000V

or the meter might be damaged.

3 ． B e careful when measuring high voltage circuit.

4-3

． ACV

ACV

measurement

4-3-1 ． Apply the black test leads to “ COM ” terminal and the red one to “ V/ Ω /Hz ” terminal.

4-3-2．Set the range k nob to a prop er ACV rang e, t hen, connect the test leads

cross to the measured circuit.

NOTE:

1 ． If the range under measured is unclear b eforehand, should set the range knob to the

highest range, then, switch to a proper range according to displaying value. ． If LCD displays “ 1 ”,it m eans overrang e, should set the range knob to a higher range.

2. The remained digits do not affect on measuring accuracy.

3. D o not input a voltage over 1000V rms,or,

the me ter might be damaged.

4 ． B e careful when measuring high voltage circuit.

4-4

． DCDCDC

current

measurement

4-4-1．Apply the black test leads to “ COM”terminal and the red one to “ m A”ter minal

（ Max.200 mA

），

or the red test lead to “ 20A ” terminal （ m ax. 20A ） .

4-4-2 ． Set the range knob to a proper DCA current r ange, then, connect the meter to the

measured c ircuit, the measured current value and the current polarity which the red test lead connect will be displayed on LCD.

NOTE:

1 ． I f the range u nder measured is unknown beforehand, should set the range knob to the

highest range, then, switch to a p roper range according to the displaying value ; If LCD displays “ 1”， it means overrange, the range knob must be set to a hig her range.

2 ． T he m ax. input current is 200 mA o r 20A （ subject to the position where the red test

lead insert

），

large current m ay blow the fuse. Be careful especially at 20A range, because there is no fuse protection at this range, larg e current may heat the circuit, even dam age the meter.

4-5

． ACACAC

current

measurement

4-5-1 ． Apply the black test lead to “ COM ” terminal ， and the red one to “ m A ” ter m

（ max. 200 mA

），

or the red teat lead to “ 20A ” terminal （ max. 20A

）；

4-5-2 ． Set the range knob to a proper ACAcurrent range, then, connect the meter to the

circuit under m easured.

NOTE:

1．If the current rang e under measure is unknown beforehand, should set the range knobto

the highest range, then, switch to the proper range according to the displaying value. If LCD displays “ 1”， it means overrang e, must set the range knob to a higher range.

2．T he max. input current is 200 mA or

20A

（ subject to the position where the red test lea d

insert

），

large current m ight b low the fuse，be careful e specially at 20A r ange, becaus e

there is no fuse protection at this range, l arge current may heat the ci rcuit, even damage

the m eter.

3. The remained digits do not affect on m easuring accuracy.

4-6

． Resistance

Resistance

measurement

4-6-1 ． Apply the black test lead to “ COM ” terminal ， and the red one to “ V/ Ω /Hz ”

terminal.

4-6-2 ． Set the range knob to a proper resistance r ange, connect the test leads across the

resistance under measured.

NOTE:

1．If the resistance value is over the selected rang e value, “ 1”displays, thus, should se t to

a higher rang e. When measuring value is o ver 1M Ω ， the reading needs a few seconds to be stable. It's normal for high resistance measuring.

2 ． Whe n input term inal is open-circuit, overload displays. 3 ． B efore measuring in-line r esistance, be sure that power is off and all capacitance are

released.

4 ． D o not input voltage at this range.

4-7

． Capacitance

Capacitance

measurement

Set the knob to proper capacitance r ange, and insert the capacitor u nder tested. NOTE: 1 ． If the capacitance is unknown b eforehand, should set the range knob to the highest

range,then, switch to a proper range according to the displaying v alue.If“ 1”displa ys, it m eans overrang e, should set to a higher range.

2 ． B efore taking m easurement, L CD displaying might not be zero, the rem aining will

become smaller and smaller, it can be ig nored. .

3. If creeps seriously or the capacitor is breakdown when measuring large c apacitance, some dig its are displayed and unstable.

4. Before measuring, should release the capacitor completely to avoid damage.

5. unit: 1 uF =10 00 nF 1nF=10 00 pF

4-8.

Transistor

hFE

4-8-1. Set the range to “ hFE ” rang e. 4-8-2. Select NPN or P NP,insert separately emitter,base and collector to pro per terminal.

4-9

． Diode

Diode

and

continuity

test

4-9-1 ． Apply the black test lead to “ COM ” terminal ， and the red one to “ V/ Ω /Hz ”

terminal （ the pol arity of the red test lead is “ +”） .

4-9-2 ． Set the range knob to “

”

， connect the test leads to the diode under measured ,

and the reading is close to the value of di ode forward voltage drop.

4-9-3 ． Connect the test leads to two points of circuit under measured, if the built-in buzze r

sounds, the resistance between two points is less than approx. (70 ± 20) Ω .

NOTE:

Do not input voltage at “ ” range to avoid dam age the meter.

4-10

． Frequen cy

Frequency

measurement

4-10-1 ． Apply the test leads or shield cable to “ COM ” and “ V/ Ω /Hz ” term inal. 4-10-2 ． Switch the range knob to frequency range, connect the test leads across to the

signal source or the measured load.

NOTE:

1 ． Whe n input is over 1 0V rms ， re ading is possible but maybe overrange. 2 ． I t's better to use shielding cable on noisy condition when measuring sm all signal. 3 ． B e careful when measuring high volt circuit. 4 ． Do not input a voltage over 250V DC or AC peak factor to avoid to damag e the meter.

4-11

． Conductance

Conductance

measurement

4-11-1 ． Apply the black test leads to “ COM ” terminal, and the red one to “ mA ”

terminal.

4-11-2．Set the range k nobto“ nS”range, connect the test leads to the insulating resistan ce

under measured.

4-12

． DAT A

DATA

HOLD

PRESS “ HOLD ” key , the current data will be hold on LCD.

4-13.

Auto

Power

Off

After work ing (20 ± 10) minutes, the meter will be auto power off and to be sleeping

mode. Press POWER key twice to restart the power.

4-14.

BACKLIGHT

Press B/L key to turn on the backlight, and press it ag ain to turn off.

NOTE: When turning on backlight, the working current will be enlarged, it leads to

shorten battery usage and enlarge accuracy of some functions.

555

． Maintenance

Maintenance

Do not try to m odify the electric circuit. 5-1 . Keep the m eter away from water, dust and shock. 5-2 . Do not store and operate the meter under the condition of hig h temperature, high

humidity, combustible, explosive and strong magnetic place. 5-3 . W ipe the case with a damp cloth and detergent, do not use abrasives and alcohol. 5-4 . I f do not operate for a long time, should take out the battery to avoid leakage 5-5 . Change fuse

When replacing fu se, to use the same type and specification

6.6.6.

IfIfIf

the

meter

does

not

work

properly,

check

the

meter

asasas

following:

MB-9807-62

CONDITIONS

WAY

TO SOLVE

NO DISPLAYING

● T he power is not turned on

● HOLD key

● Replace battery

symbol displays

● Replace battery

NO CURRENT

INPUT

● Replace fuse

BIG ERROR

● Replace battery