Contents
1. Overview
1.1About Safety
1.1.1 Safety instructions
1.1.2 Safety precautions
1.1.3 Safety symbols
1.1.4 Maintenance
1.2Input protection measures
2. Instrument instruction
2.1Instrument exterior
2.2Symbol instructions of display
2.3Instructions of function buttons
2.4Instructions of input socket
2.5Accessories
3. Operation instructions
3.1Routine operation
3.1.1 Functions shift and data hold
3.1.2 Backlit and illumination
3.1.3 Auto power off
3.2Measuring instructions
3.2.1 ACV and DCV measurement
3.2.2 Resistance measurement
3.2.3 Diode measurement
3.2.4 Buzzer test
3.2.5 Capacitance measurement
3.2.6 Transistor measurement
3.2.7 Frequency measurement
3.2.8 Current measurement
3.2.9 NCV test
3.2.10Infrared signal detection
3.2.11Temperature measurement
4. Technical datasheet
4.1Comprehensive indicators
4.2Accuracy index
4.2.1 Direct current of voltage
4.2.2 Alternative current of voltage
4.2.3 Frequency
4.2.4 Resistance
4.2.5 Diode
4.2.6 Buzzer
4.2.7 Transistor
4.2.8 Capacitance
4.2.9 Direct current
4.2.10Alternative current
4.2.11Temperature
5. Maintenance
5.1General maintenance
5.2Battery replacement
1. Overview
This digital multimeter is designed and produced according to the
requirements of international electrical safety standards IEC-61010
for the safety requirements of electronic measuring instruments and
handheld digital multimeters.
Meet the 600V CAT III, 1000V CAT
Ⅱ
of IEC61010 and its
requirements of pollution. Before using this instrument, please read
the instruction manual carefully, and pay attention to the relevant
safety operation guidelines.
1.1About Safety
1.1.1
Safety instructions
When using this meter, the user must comply with all the standard
safety regulations concerning the following two aspects:
A: Protection against electric shocks.
B: Prevent the misuse of the instrument's safety procedures.
To ensure your personal safety, use the test pen provided with the
table, check before use, and make sure they are intact.
1.1.2
Safety precautions
The use of meter instruments near devices with large
electromagnetic disturbances will be unstable and may even cause
large errors.
Do not use when the appearance of the meter or the test pen is
broken.
If the meter is not used correctly, the safety functions provided by
the meter may fail.
Care must be taken when working around bare conductors or buses.
Do not use this instrument near explosive gas vapor or dust.
The correct input function must be used to measure the range.
The input value must not exceed the limit of the input value specified
for each range to prevent damage to the instrument,
Do not touch the unused input when the instrument is connected to
the circuit under test.
When the measured voltage exceeds
60V DC or 30 V AC
, use caution
to prevent electric shock.
When measuring with a test pen, place your finger behind the guard
ring of the test.
Before converting the range, it must be ensured that the test pens
have left the circuit under test.
For all DC functions, to avoid the risk of electric shock due to possible
incorrect readings, use this function first to confirm the presence of
any AC voltage, and then select a DC voltage range equal to or
greater than the AC voltage.
Before carrying out a resistance, diode, capacitance measurement or
continuity test, the circuit under test must be powered off and all
high-voltage capacitors in the circuit under test should be discharged.
Do not measure the resistance on a live circuit or perform buzzer
test.
Before conducting the current measurement, the fuse of the meter
should be checked. Before connecting the meter to the circuit under
test, the power of the circuit under test should be turned off.
When performing TV repairs or measuring power conversion circuits,
care must be taken in the high-amplitude voltage pulses in the circuit
under test to avoid damage to the meter.
The power supply of instrument uses four pieces AA 1.5V batteries.
The battery must be properly installed in the battery compartment of
the meter.
When the battery with low voltage symbol
appears, replace the
battery immediately. Insufficient battery power can make the meter
read incorrectly, which may result in electric shock or personal injury.
When measuring Category
Ⅱ
voltages, do not exceed 1000V. For
measurement category
Ⅲ
, do not exceed 600V.
Do not use the instrument when the instrument's housing or part of
the housing is removed.