SWITCHING BETWEEN FREQUENCY/DUTY SWITCHING TO RELATIVEMEASUREMENT
…1 …1 …2 …3 …4 …6 …7 …8 …10 …12 …12 …13 …23 …23 …24 …24 …24 …25 …25 …26 …27 …28 CONTENTS
2. 2.1 2.2 2.3 3. 3.1 3.2
4. 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9
BACK LIGHT AUTO POWER OFF PREPARING FOR MEASUREMENT
DIGITAL MULTIMETER CONTENTS
4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.234.24 5. 5.1 5.2 5.3 6.
MEASURING DC VOLTAGE MEASURING AC VOLTAGE MEASURING FREQUENCY MEASURING DUTY MEASURING DC CURRENT MEASURING AC CURRENT MEASURING RESISTANCE MEASURING CAPACITANCE TESTING DIODE TESTING CONTINUITY MEASURING RELATIVE HUMIDITY MEASURING TEMPERATURE (WITH THERMO-RESISTOR) MEASURING TEMPERATURE (WITH THERMOCOUPLE) MEASURING SOUND LEVEL (dB) MEASURING LUMINANCE MAINTENANCEREPLACING THE BATTERIES REPLACING FUSE REPLACING TEST LEADS ACCESSORIES
…29 …30 …31 …32 …32 …33 …35 …36 …36 …37 …38 …39 …40 …41 …41 …45 …45 …45 …47 …48
1. SAFETY INFORMATION WARNING BE EXTREMELY CAREFUL WHEN USING THIS METER. Improper use of this device can result in electric shock or destruction of the meter. Take all normal safety precautions and follow the safeguards suggested in this manual. Toexploit full functionality of the meter and ensure safe operation, please read carefully and follow the directions in this manual. This meter complies with the general technical requirements for the GB/T 19978-92 multimeter as well as the safety requirements for GB4793.1-1995 (IEC-1010-1:1990) concerning electronic measuring instruments, with pollution degree 2 and overvoltage at CAT ΙΙ 1000V/ CATΙΙΙ 600V. Follow all safety and operation instructions to ensure safe use of the meter. With proper use and care, this digital multimeter will give you years of satisfactory service. 1.1 PRELIMINARY 1.1.1 When using the meter, the user must observe all normal safety rules concerning: 1) general protection against electric shock 2) protection of the meter against misuse
DIGITAL MULTIMETERSAFETY INFORMATION
DIGITAL MULTIMETER SAFETY INFORMATION
1.1.2 When the meter is delivered, check whether it has been damaged in transit. 1.1.3 After being stored and delivered under harsh conditions, the meter should be checked and confirmed whether any damages have been incurred. 1.1.4 Test leads must be kept in good condition. Check whether the insulation on test leads has been damagedand any wire has been exposed. 1.1.5 Use the test leads supplied to ensure operation safety. If required, they must be replaced with test leads of the same model or class. 1.2 DOS AND DON’TS 1.2.1 Use the right input jack, function and range. 1.2.2 Do not take measurements that exceed the protection limit values indicated in the specifications 1.2.3 Do not touch the metal tips of the test leadswhen the meter is connected to the circuit to be measured. 1.2.4 Keep your fingers behind the probe barriers when taking a measurement with an effective voltage above 60V DC or 30V rms AC. 1.2.5 Do not take voltage measurement if the value between the terminals and earth ground exceeds 1000V. 1.2.6 Select the highest range if the value scale to be measured in the manual range is unknown.
-2-1.2.7 Do not connect the meter to any voltage source while the rotary selector is in the current, resistance, capacitance, diode, continuity range. 1.2.8 Disconnect the test leads from the circuit under test before turning the rotary selector to change functions. 1.2.9 Be careful that high voltage pulses at test points may damage the meter when measurements are being taken on the circuit of TV...