DIGITAL MULTIMETER OPERATION MANUAL
1. GENERAL
The instrument is a stable and good performance digital multi-meter driven by
battery. It uses the LCD with 26mm-high figure to make the reading clear. Unit
symbol displaying, and the function of backlight and overload protection make
operation is convenient.
The instrument has the function of measuring DCV, ACV, DCA, ACA, resistance,
capacitance, inductance, temperature and frequency, and diode, triode and
continuity test. The instrument takes dual-integral A/D converter as key point, is an
excellent tool.
2. SAFETY
NOTES
This series meter, meets the standard of IEC1010. Please read below notes
carefully before operation.
1. Do not input a limited voltage which RMS is over DC 1000V or AC 700V when
measuring voltage.
2. Voltage less than 36V is a safety voltage. When measuring voltage higher than
DC 36V, AC 25V, check the connection and insulation of test leads to avoid electric
shock.
3. Be sure to keep the test leads off the testing points when converting function and
range.
4. Select correct function and range to avoid fault operation.
5. When measuring current, do not input current over 20A.
6. Safety symbols
“
” exists high voltage, “
” GND, “
” dual Insulation, “
” must refer to manual,
“
” low battery.
3. SPECIFICATION
1). GENERAL
1-1. Displaying: LCD displaying.
1-2. Max. indication: 1999 (3 1/2), auto polarity indication.
1-3. Measuring method: dual slope A/D transfer.
1-4. Sampling rate: approx, 3 times/sec.
1-5. Over range indication: MSD displays “1”/“OL” or “-1”/“OL”.
1-6. Low battery indication. “
” symbol displays.
1-7. Operation: (0~40)°C, relative humidity <80%.
1-8. Power: one 9V battery (NEDA 1604/6F22 or equivalent).
1-9. Size: 190
×
88.5
×
27.5mm.
1-10. Weight: approx. 320g (including a battery).
2). TECHNICAL DATA
2-1. Accuracy:
±(a%
×
r dgts) at (23 ± 5)°C, relative humidity<75%.
One year guarantee since production date.
2-2. Function:
DCV Resistance
Ω
Temperature
°C
ACV
Diode continuity testing
Frequency f
DCA
Triode
h
FE
Inductance L
ACA
Capacitance C
Auto power-off
2-3. TECHNICAL DATA
2-3-1. DC Voltage
Range
Accuracy
Resolution
200mV
0.1mV
2V
1mV
20V
10mV
200V
±(0.5%+3)
100mV
1000 V
±(1.0%+5)
1V
Input resistance: 10M
Ω
for all ranges.
Overload protection: Range 200mV: DC 250V or AC peak value.
Other ranges: DC 1000V or AC peak value.
2-3-2. ACV Voltage
Range
Accuracy
Resolution
200mV
±(1.2%+3)
0.1mV
2V
1mV
20V
10mV
200V
±(0.8%+5)
100mV
700V
±(1.2%+5)
1V
Input resistance: It is 1M
Ω
at range 200mV or 2V, and be 10M
Ω
at others.
Overload protection: DC 250V or AC peak value at range 200mV.
DC 1000 V or AC peak value at others.
Frequency response: Range less than 200V: (40~400)Hz.
Range 700V: (40~100)Hz.
Displaying: RMS of sine wave (mean value response).
2-3-3. DCA
Range
Accuracy
Resolution
2mA
±(0.8%+3)
1uA
20mA
±(0.8%+3)
10uA
200mA
±(1.2%+4)
100uA
20A
±(2.0%+5)
10mA
Max. measuring voltage drop: 200mV.
Max. input current: 20A (within 10 seconds).
Overload protection: 0.2A/ 250V fast-blown fuse, range 20A infused.
2-3-4. ACA
Range
Accuracy
Resolution
2mA
1uA
20mA
±(1.0%+5)
10uA
200mA
±(2.0%+5)
100uA
20A
±(3.0%+10)
10mA
Max. measuring voltage drop: 200mV.
Max. input current: 20A (within 10 seconds).
Overload protection: 0.2A/250V fused, range 20A infused.
Frequency response: (40~200)Hz.
Displaying: RMS of sine wave (mean value response).
2-3-5. RESISTANCE (
Ω
)
Range
Accuracy
Resolution
200
Ω
±(0.8%+5)
0.1
Ω
2k
Ω
1
Ω
20k
Ω
10
Ω
200k
Ω
100
Ω
2M
Ω
±(0.8%+3)
1k
Ω
20M
Ω
±(1.0%+l5)
10k
Ω
2000M
Ω
±[5%(reading-10)+20]
1M
Ω
Open voltage: less than 3V.
Overload protection: DC 250V or AC peak value.
NOTE:
A: At range 200
Ω
, short-circuit the test leads to measure the wire resistance, then,
subtracts it from the real measurement.
B: At range 200M
Ω
, when the test leads short circuit, LCD displays 1.0M
Ω
. In the same way,
the reading is 10M
Ω
while the test leads short at range 2000M
Ω
. It’s normal and doesn’t
affect the accuracy Please deduct the value from the real measurement.
C: The reading be displayed slowly when the measurement is more than 1M
Ω
.
Please wait it to be stable.
2-3-6. Capacitance
Range
Accuracy
Resolution
20nF
10pF
200nF
100pF
2uF
1nF
20uF
±(2.5%+20)
10nF
200uF
±(5.0%+5)
100nF
Test frequency: 100Hz.
Overload protection: DC 36V or AC peak value.
2-3-7. Inductance (L)
Range
Accuracy
Resolution
2mH
1uH
20mH
10uH
200mH
100uH
2H
1mH
20H
±(2.5%+20)
10mH
Test frequency: 100Hz.
Overload protection: DC 36V or AC peak value.
2-3-8. Temperature
Range
Accuracy
Resolution
(-40~1000)°C
±(0.8%+4) < 400°C
±(1.5%+15)
≥
400°C
1°C
K-type thermocouple (banana-shape plug).
2-3-9. Frequency
Range
Accuracy
Resolution
2kHz
1Hz
20kHz
10Hz
200kHz
100Hz
2000kHz
1kHz
10MHz
±(0.5%+4)
10kHz
Input sensitivity: 1V RMS.
Overload protection: DC 250V or AC peak value (within 10 seconds).
