Victor VC921 Manual de usuario

DIGITAL MULTIMETER

OPERATION MANUAL

WARNING

To avoid electric shock or injured

or damage the instrument, please

read the manual carefully before

operation.

Ⅰ. SAFETY RULES

This series meter meets the

standard of IEC1010. ead it

before operation.

1．Check the case of the meter

and test leads before operation.

2．Do not input over range when

testing.

3. Be careful when measuring

voltage over ACV 40V or DCV

60V.

4．When measuring, must select

correct function and range.

5．The test lead should be keep

away from the tested point when

change the function.

6. Do not try to modify the circuit,

Or you may damage the instrument

and endanger personal safety.

7. Safety symbols

“ ” exists high voltage , “ ”

dual insulation ,“ ” warning

8．Electric symbols

“ ”GND， “ ” low battery

“ ” AC “ ” DC “

”continuity test “ ”diode “

”relative value measurement

“ ”auto range

II.KEY FUNCTION

1. EL: press this key ,readings

back to zero , enter into relative

measurement ,LCD display “

” symbol, press it again, out from

the relative value measurement

function .when at Hz range, can

switch to frequency or duty cycle

(0.1~99.9%) measurement mode.

2. ANGE key :selecting operation

mode of auto range or manual

range .the default mode of this

meter is auto range , LCD display“

” symbol, press this key will

change to manual range, press it

one more time to increase a new

range, from low to high cycle in

turn .press the key for more than 2

seconds, will back to auto range

mode.

Ⅲ. SPECIFICATION

3-1．GENERAL

3-1-1 ．Displaying : LCD

displaying

3-1-2．Max. indication: 3999 （3

3/4）, auto polarity indication

3-1-3 ．Measuring method: dual

slope A/D transfer

3-1-4 ．Sampling rate: approx. 3

times/sec

3-1-5 ．Over range indication:

displays “OL”

3-1-6 ．Low battery indication: “

” symbol displays

3-1-7 ．Operation: (0 ～

40)℃，relative humidity <80%

3-1-8．Power：2×1.5V battery

3-1-9．Meas.:124×80×20 mm

3-1-10 ．Weight: approx.

140g（including battery）

3-1-11. Accessories: instruction

manual, gift box and battery

3-2．TECHNICAL DATA

3-2-1 ．Accuracy: ± （DG×a%

+ digit ） at (23±5) ,<75% H℃

one year guarantee from

production date

3-2-2.DCV

ANG

EACCU ACY ESOLUTION

400mV

±(0.5%+4)

0.1mV

4V 1mV

40V 10mV

400V 100mV

600V ±(1.0%+4) 1V

Input resistance： 10MΩ

Overload protection: 400Mv

range:250V MS ＜

10seconds ;other

ranges 600V MS ＜

10seconds .

3-2-3. ACV True MS

Measurement

ANGE ACCU ACY ESOLU7TION

400mV ±(1.5%+6) 100μV

±(0.8%+6)

1mV

40V 10mV

400V 100mV

600V ±(1.0%+6) 1V

Input resistance: 10MΩ

Overload protection: 400mV

range: 250V MS ＜

10seconds(manual range only).

Other ranges 600V MS ＜

10seconds.

Frequency response: Sine wave

and triangular wave :

(40~1000)Hz, other waveform:

( 40~400)Hz

Displaying: True MS response

3-2-4. CONTINUITY TEST

Overload protection: 250V MS

Warning: do not input voltage at

this range.

ange Display Test Condition

Buzzer

sound at

less than

(50±30)Ω

OCV: about 0.5V

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