User Manual

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DIGITAL MULTIMETER

OPERATOR’S MANUAL

1. Overview

The multimeter is characterized at slim size, portable, stable performance

and anti-dropping capacity. Using 4000 counts digit LCD monitor with

character 22mm high, they offer clear readings. With overall circuitry

design centering on large-scale IC A/D converters in conjunction and

over-load protection circuit, the meters give excellent performance and

exquisite making as a handy utility instrument.

The meters can be used to measure DC & AC voltage, DC & AC current,

resistance, capacitor, frequency, duty cycle, temperature, battery test,

positive diode voltage fall and audible continuity.

2. Panel Layout

1 LCD display: 4000 counts digit, full function symbol display.

2 SELECT key: This key work on the " " range, press the key

to choose resistance, diode or continuity test, on the voltage or

current range, change to DC or AC; If press and hold SELECT key

to power on, “Auto Power Off ” function will be disabled.

HOLD key: Press the “HOLD” key to lock display value, and the

“DH” sign will appear on the display, press it again to exit.

4 PC-LINK Key: Press the “PC-LINK” key, the meter enter PC-Link

mode, the symbol “PC-LINK” will appear on LCD, and the serial data

output function is active. Press it again to exit PC-Link mode and the

symbol “PC-LINK” will disappear.

REL Key: Press the “REL” key, the meter enters relative measuring

mode, “REL” is displayed on the LCD and the present reading

becomes the reference value and displayed on the display. Relative

measurement REL△=measurement value-Reference value.

6 Hz/% Key: On “ACV/ACA” or “Hz” range, press the “Hz/%” key, you

can choose the Frequency or Duty Cycle measurement.

CDS sensor: The CDS sensor can reaction to the ambient

brightness range, then automatically control the LCD backlight to

lighten or go out.

Rotary Switch: use this switch to select functions and ranges.

9 VHz Input Jack

10 COM and Temperature “-” Input Jack

11 μAmA/BATT and Temperature “+” Input Jack

12 20A Input Jack

13 USB port of the serial data output

3. Safety Information

3-1 The meters are designed according to IEC-1010 concerning electronic

measuring instruments with an over-voltage category 600V (CAT Ⅳ) and

pollution 2.

3-2 Follow all safety and operating instructions to ensure that the meter is

used safely and is kept in good operating condition.

3-3 safety symbols:

Important safety information, refer to the operating manual.

Dangerous voltage may be presence.

Double insulation (protection Class II)

4. Special Cautions for Operation

4-1 The meters can be safe only according to standard procedures when

used in conjunctions with the supplied test leads. To replace damaged test

leads with only the same model or same electric specifications.

4-2 To avid risk of electric shock, do not use the meters before the cover is

in place.

4-3 The range switch should be right position for the testing.

4-4 To avoid electric shock and damaging the instruments, the input

signals are forbidden to exceed the specified limits.

4-5 When measuring TV set or switched power, attention should be paid

to the possible pulses that may bring destruction to the circuit.

4-6 Range switch position is forbidden to be changed at random during

measurement.

4-7 Take caution against shock in the course of measuring voltage higher

than DC 60V & AC 30V.

4-8 Protection fuse should be replaced only with same type and same

specification.

4-9 After operation is finished, set function switch at OFF range to save

battery power.

4-10 If the meter is without usage for long time, take out battery to avoid

damage by battery leakage.

5. GENERAL SPECIFICATIONS

5-1 Max Voltage between input terminal and Earth Ground: CAT Ⅳ 600V

5-2 Over-range Indication: display “OL” for the significant digit.

5-3 Automatic display of negative polarity “-”.

5-4 Low Battery Indication: “ ” displayed.

5-5 Max LCD display: 4000 counts digit.

5-6 Auto range control.

5-7 Auto Power Off: When measurement exceeds 30 minutes without

switching mode and pressing key, the meter will switch to standby

mode. Press any key to exit standby mode. When restart the system,

press and hold SELECT key to disable auto power off. When the

“PC-LINK” symbol appear on LCD, it disable auto power off too.

5-8 Auto LCD backlight

5-9 Fuse protection: 400mA/250V PPTC Resettable Fuse

F-20A/250V Fuse (Ø5x20mm)

5-10 Power supply: 9V battery (6F22)

5-11 Operating Temp.: 0℃ to 40℃ (relative humidity <85%)

5-12 Storage Temp.:-10℃ to 50℃ ((relative humidity <85%)

5-13 Guaranteed precision Temp.: 23±5℃ (relative humidity <70%)

5-14 Dimension: 180x88x51mm

5-15 Weight: approx. 320g (including battery)

6. Testing Specifications

Accuracy is specified for a period of year after calibration and at 18℃ to

28℃ (64℉ to 82℉) with relative humidity to 70%.

6-1 DC Voltage

Range

Resolution

Accuracy

400mV

0.1mV

±(0.5% of rdg + 2 digits)

1mV

40V

10mV

400V

100mV

1000V

±(0.8% of rdg + 2 digits)

-- Impedance: 10MΩ, More than 100MΩ on 400mV range

-- Overload protection: 1000V DC or 750V AC rms

6-2 AC Voltage

Range

Resolution

Accuracy

1mV

±(0.8% of rdg + 3 digits)

40V

10mV

400V

100mV

750V

±(1.2% of rdg + 3 digits)

-- Impedance: 10MΩ

-- Overload protection: 1000V DC or 750V AC rms

-- Frequency Range: 40 to 400Hz

-- Response: average, calibrated in rms of sine wave

6-3 DC Current

Range

Resolution

Accuracy

400μA

0.1μA

±(1.2% of rdg + 2 digits)

4000μA

1μA

40mA

10μA

400mA

100μA

1mA

±(2.0% of rdg + 3 digits)

20A

10mA

-- Overload protection: 400mA/250V PPTC Resettable Fuse

F-20A/250V Fuse, 20A up to 10 seconds

6-4 AC Current

Range

Resolution

Accuracy

400μA

0.1μA

±(1.5% of rdg + 3 digits)

4000μA

1μA

40mA

10μA

400mA

100μA

1mA

±(2.5% of rdg + 5 digits)

20A

10mA

-- Overload protection: 400mA/250V PPTC Resettable Fuse

F-20A/250V Fuse, 20A up to 10 seconds

-- Frequency Range: 40 to 400Hz

-- Response: average, calibrated in rms of sine wave

6-5 Resistance

Range

Resolution

Accuracy

400Ω

0.1Ω

±(1.0% of rdg + 3 digits)

4kΩ

1Ω

±(1.0% of rdg + 2 digits)

40kΩ

10Ω

400kΩ

100Ω

4MΩ

1kΩ

40MΩ

10kΩ

±(1.5% of rdg + 3 digits)

-- Overload protection: 250V DC or AC rms

6-6 Capacitance

Range

Accuracy

Resolution

51.2nF

±(3.0% of rdg + 10 digits)

10pF

512nF

±(2.5% of rdg + 5 digits)

100pF

5.12µF

1nF

51.2µF

10nF

100µF

±(5.0% of rdg + 10 digits)

100nF

-- Overload protection: 250V DC or AC rms

6-7 Frequency

Range

Accuracy

Resolution

5.12Hz

± (0.1% of rdg + 5 digits)

0.001Hz

51.2Hz

0.01Hz

512Hz

0.1Hz

5.12kHz

1Hz

51.2kHz

10Hz

512kHz

100Hz

5.12MHz

1kHz

-- Sensitivity: sine wave 0.6V rms (5.12MHz: 1.5V rms)

-- Overload protection: 250V DC or AC rms

6-8 Duty cycle

0.1%～99.9%: ± ( 2.0% of rdg + 2 digits ), Frequency lower than 10kHz

-- Sensitivity: sine wave 0.6V rms

-- Overload protection: 250V DC or AC rms

Summary of content (2 pages)

PAGE 1
DIGITAL MULTIMETER OPERATOR’S MANUAL 1. Overview The multimeter is characterized at slim size, portable, stable performance and anti-dropping capacity. Using 4000 counts digit LCD monitor with character 22mm high, they offer clear readings. With overall circuitry design centering on large-scale IC A/D converters in conjunction and over-load protection circuit, the meters give excellent performance and exquisite making as a handy utility instrument.
PAGE 2
6-9 Temperature Range Accuracy Resolution -20~150℃ ± ( 3℃+ 1digit ) ℃ 1℃ 150~1000℃ ± ( 3% of rdg + 2digits ) -- NiCr-NiSi sensor -- Overload protection: 400mA/250V PPTC Resettable Fuse 6-10 Battery test Range Accuracy Test Condition ±(5.0% of rdg + 5 digits) Loading Current: Approx. 25mA -- Battery voltage range: 1.