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DIGITAL MULTIMETER OPERATION MANUAL
1.INTRODUCTION
This instrument is a high performance, compact, rugged, battery operated, 4½ digital
multi-meter for measuring DC and AC voltage, DC and AC current, Resistance and diode,
Capacitance and Frequency, Transistor, Diode and Continuity test. The Dual-slop A/D
converter uses CMOS technology for auto-zero, polarity selection and over-range
indication. Full overload protection is provided. Because of its outstanding features, it is
most suitable for use on production line or lab, R & D, maintenance and repair work.
2.SPECIFICATIONS
2.1 GENERAL SPECIFICATIONS
Display : 4½ digit LCD, Max. 19999 counts with unit indication
Polarity : Automatic negative polarity indication.
Zero adjustment : Automatic.
Measuring method : Dual-slop A/D converter
Sampling rate : 2-3 times/second
Over range indication : Only the MSD “1" display.
Max. Common mode voltage : 500V DC/AC RMS
Low battery : The “
” is display.
Safety standards :
EMC/LVD. The meter is up to the standards of IEC1010
Pollution Degree 2, Over voltage category or double insulation .
Ⅱ
Ⅱ
Operating environment : Temperature (0 to 40 ), humidity<80%RH.
℃
℃
Storage environment : Temperature (-10 to 50 ), humidity<80%RH.
℃
℃
Power : Single, standard 9 volt battery. NEDA 1604IEC6F22
Dimension : 192mm(H)X95mm(W)X48mm(D)
Weight : Approx. 455g(including 9V battery)
Accessories : Operation manual, Conform card, Test leads(Red & Black 1 pair),
Shock-proof cover, Gift box, etc.
2.2 ELECTRICAL SPECIFICATIONS
Accuracy is ±(percentage of r number of digit) at 23±5 ,<75%RH.
℃
DC Voltage
Range
Accuracy
Resolution
200mV
±(0.05%+3)
10uV
2V
100uV
20V
1mV
200V
10mV
1000V
±(0.1%+5)
100mV
Input impedance
：
10MΩ
Overload protection: 200mV range: 250VDC/AC RMS
2-1000V rang: 1000VDC/AC RMS
AC Voltage
Range
Accuracy
Resolution
200mV
±(1.0%+25)
0.1mV
2V
±(0.8%+25)
1mV
20V
10mV
200V
100mV
750V
±(1.0%+25)
1V
Input impedance : 2MΩ
Overload protection: Range 200mV: DC 250V or AC peak value.
Other ranges: DC 1000V or AC peak value
Frequency response: below 200V range: 40-400Hz
750V range: 40-200Hz
Indication: Average (rms of sine wave)
Resistance
Range
Accuracy
Resolution
200Ω
±(0.2%+10)
0.01Ω
2kΩ
±(0.2%+5)
0.1Ω
20kΩ
1Ω
200kΩ
10Ω
2MΩ
100Ω
200MΩ
±
【
(5%
（
reading-10.00
）
+30
】
10kΩ
Open circuit voltage: Less than 3V
Overload protection
：
250V DC/AC RMS
DC Current
Range
Accuracy
Resolution
200uA
±(0.5%+4)
0.01uA
2mA
0.0001mA
20mA
0.001mA
200mA
±(0.8%+6)
0.01A
20A
±(2.0%+15)
0.001A
Max measuring voltage: 200mV
Max input current: 20A(max. up to 15seconds)
Overload protection
：
Fast 0.2A/250V fuse, 20A range has not fuse.
AC Current
Range
Accuracy
Resolution
200mA
±(1.5%+25)
0.1mA
20A
±(2.5%+35)
10mA
Max measuring voltage: 200mV
Max input current: 20A (max. up to 15seconds)
Overload protection
：
0.2A/250V self-resume fuse, 20A range has not fuse.
Frequency response: 40-200Hz
Indication: Average (rms of sine wave)
Capacitance
Range
Accuracy
Resolution
20nF
±(4.0%+50)
10pF
2uF
1000pF
200uF
10nF
Measuring frequency: 400Hz
Overload protection: 36V DC/AC RMS; 630mA/250V
Frequency
Range
Accuracy
Resolution
20kHz
±(1.5%+25)
10Hz
200kHz
100Hz
Overload protection: 250V DC/AC RMS (max. up to 15 seconds)
Diode Test
Range
Description
Test Condition
Display read approx. forward
voltage of diode
Forward DC Current approx.
1mA. Reversed DC voltage
approx. 3V.
Buzzer sounds if resistance
Between terminals V/Ωand COM
is less than about 70Ω.
Open circuit voltage is approx.
3V
Overload Protection: 250V DC/AC RMS
Transistor hFE Test
Range
Description
Test Condition
hFE
Display read approx. forward
Voltage (0-1000) of transistor under test
(ALL TYPE)
Base Current approx.
10uA, Vce approx. 3V
