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1. SAFETY INFORMATION..................................1
2. DESCRIPTION...............................................3
3. OPERATING INSTRUCTION.............................6
3.1 MEASURING VOLTAGE............................6
3.2 MEASURING CURRENT...........................6
3.3 MEASURING RESISTANCE.......................7
3.4 MEASURING FREQUENCY........................7
3.5 MEASURING CAPACITANCE.....................8
3.6 CONTINUITY TEST...................................8
3.7 DOIDE TEST............................................8
3.9 TRANSISTOR TEST..................................9
4. SPECIFICATIONS...........................................9
5. ACCESSORIES.............................................13
6. BATTERY & FUSE REPLACEMENT..................14
CONTENTS
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Table of Contents
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Summary of Contents for Mastech MY67
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Page 1: Table Of Contents
CONTENTS 1. SAFETY INFORMATION…………………………….1 2. DESCRIPTION……………………..…………………3 3. OPERATING INSTRUCTION………………………..6 3.1 MEASURING VOLTAGE……………………….6 3.2 MEASURING CURRENT………………………6 3.3 MEASURING RESISTANCE…………………..7 3.4 MEASURING FREQUENCY……………………7 3.5 MEASURING CAPACITANCE…………………8 3.6 CONTINUITY TEST…..………………………...8 3.7 DOIDE TEST……………………………………..8 3.9 TRANSISTOR TEST…………………………….9 4. SPECIFICATIONS…………………………………….9 5. ACCESSORIES………………………………………13 6. BATTERY & FUSE REPLACEMENT………………14... -
Page 2: Safety Information
1. SAFETY INFORMATION This multimeter has been designed according to IEC-1010 concerning electronic measuring instruments with an overvoltage category ( CATⅡ) and pollution 2. Follow all safety and operating instructions to ensure that the meter is used safely and is kept in good operating condition. - Page 3 test. ※ When carrying out measurements on TV or switching power circuits, always remember that there may be high amplitude voltages pulses at test points which can damage the meter. ※ Never perform resistance measurements on live circuits. ※ Always be careful when working with voltages above 60V dc or 30V ac rms.
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Page 4: Description
checked out. ※ Never use the meter unless the back cover is in place and fastened fully. ※ To clean the meter, use a damp cloth and mild detergent only, do not use abrasives or solvents on it. 2. DESCRIPTION This meter is an autoranging professional instrument with 3 3/4 digit LCD display, capable of performing functions:... - Page 5 2.1 SELECT (Function selection button) This button is used to select ACA or DCA measuring mode. 2.2 RANGE (Auto/manual range selection button) - 4 -...
- Page 6 This key is the auto/manual key. Power on default is auto measurement, and press one time to switch to the manual measurement. In manual measurement mode, the system will jump up one mode for each press until the highest mode, then return to the lowest mode as a loop.
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Page 7: Operating Instruction
2.5 INPUT JACKS The unit has four input jacks that are protect against overload to the limits. During use, connect the black test lead to the COM jack and the red test lead as shown below: Red lead Function Input limits connection V/Ω/Hz 1000V dc or 750V rms ac... -
Page 8: Measuring Resistance
For a maximum of 10A, move the red lead to the A jack. 2. Set the function switch at μA, mA or A range to be used and push “SELECT” button to select DCA or ACA measuring mode. 3. Connect test leads in series with the load under measurement. -
Page 9: Measuring Capacitance
red test lead to the V /Ω/Hz jack. 2. Set the rotary switch at Hz position and connect test leads across the source or load under measurement. 3.5 MEASURING CAPACITANCE 1. Set the rotary switch at desired position. 2. Before inserting capacitor under measurement into capacitance testing socket, be sure that the capacitor has been discharged fully. -
Page 10: Transistor Test
red test lead to the V/Ω/Hz jack. ( NOTE: The polarity of red lead connection is positive“ + ”) 2. Set the rotary switch at position and connect the red lead to the anode, the black lead to the cathode of the diode under testing. - Page 11 POWER SUPPLY: 9V battery, NEDA 1604 or 6F22 DISPLAY: LCD, 3999 counts MAX, updates 2-3/sec MEASURING METHOD: Dual - slope integration A/D converter OVERRANGE INDICATION: “OL” figure only on the display POLARITY INDICATION: “—” displayed for negative polarity ”displayed LOW BATTERY INDICATION:“ OPERATING TEMPERATURE: 0°C to 40°C (32°F to 104°F) STORAGE TEMPERATURE:...
- Page 12 Range Resolution Accuracy ± 0.8 % of rdg ± 2 digit 400mV 0.1mV ± 0.5 % of rdg ± 2 digit ± 0.5 % of rdg ± 2 digit 10mV ± 0.5 % of rdg ± 2 digit 400V 100mV ±...
- Page 13 Overload protection: F 500mA fuse for µA and mA ranges, F 10 A fuse for A range. Frequency Range: 40Hz to 400Hz Response: Average, calibrated in rms of sine wave 4.6 RESISTANCE Range Resolution Accuracy ± 0.8% of rdg ± 3 digits 400Ω...
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Page 14: Accessories
4.9 DIODE Function Resolution Test Open circuit current voltage 25µA 3.0V 4.10 AUDIBLE CONTINUITY Function Description If resistance is lower than 50Ω, built-in buzzer will sound. 4.11 TRANSISTOR Function Range Base current 1 to 1000 25µA 3.0V 5. ACCESSORIES 5.1 SUPPLIED WITH THE MULTIMETER Test leads Electric Rating 1500V, 10A 1 couple... -
Page 15: Battery & Fuse Replacement
A: Support the meter with a standard angle. B: Support the meter with a small angle using the little stand C: Hang the meter on the wall using the little stand. Take the little stand off from the back side of the large and insert it into holes located upper on the holster. - Page 16 Fuse rarely need replacement and blow almost always as a result of the operator’s error. Open the case as mentioned above, and then take the PCB out from the front cover. Replace the blown fuse with same ratings. WARNING Before attempting to open the case, be sure that test leads have been disconnected from measurement circuits to avoid electric shock hazard.
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