Mastech MS8265 Operator'S Instruction Manual Download Page 1 | Manualshive

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MS8265

DIGITAL MULTIMETER

OPERATOR'S

INSTRUCTION MANUAL

MS8265

ON/OFF

HOLD

LIGHT

10A

COM

FUSED,10A

MAX

RESETTABLE

750V
1000V

MAX

600V

CAT

III

1000V

CAT

II

hFE

mA

F

Hz

10

200m

200m 2m

10

hFE

200m

2

20

200

1000

750

200

20

2

20

200M

200K

20K

2K

200

200

μ

20

μ

2

μ

200n

20n

2m

20M

2M

KHz

1
2
3
...
»

Summary of Contents for MS8265

Page 1: ...STRUCTION MANUAL MS8265 ON OFF HOLD LIGHT 10A COM FUSED 10A MAX RESETTABLE 750V 1000V MAX 600V CAT III 1000V CAT II hFE mA F Hz 10 200m 200m 2m 10 hFE 200m 2 20 200 1000 750 200 20 2 20 200M 200K 20K 2K 200 200μ 20μ 2μ 200n 20n 2m 20M 2M KHz ...

Page 2: ... 3 2 5 Capacitance measurement 3 2 6 Transistor measurement 3 2 7 Frequency measurement 17 3 2 8 Current measurement 4 TECHNICAL SPECIFICATIONS 4 1 General specifications 4 2 Measurement specifications 4 2 1 DC Voltage 4 2 2 AC Voltage 4 2 3 Frequency 21 4 2 4 Resistance 4 2 5 Diode Test 4 2 6 Continuity Check 4 2 7 Transistor 4 2 8 Capacitance 4 2 9 DC current 4 2 10 AC current 5 MAINTENANCE 5 1 ...

Page 3: ...pecially protected internal MAINS derived circuits In the latter case transient stresses are variable for that reason requires that the transient withstand capability of the equipment is made known to the user 1 1 1 Preliminary When using this Multimeter the user must observe all normal safety rules concerning protection against the dangers of electric current protection of the Multimeter against ...

Page 4: ... or capacitance Never perform resistance or continuity measurements on live circuits Before measuring current check the meter s fuse and turn off power to the circuit before connecting the meter to the circuit In TV repair work or when carrying out measurements on power switching circuits remember that high amplitude voltage pulses at the test points can damage the multimeter Use of a TV filter wi...

Page 5: ...take out the battery and do not store the meter in high temperature or high humidity environment Fused by the resettable fuse F400mA 250V during capacitance temperature mA and hFE measurements A PTC resistor protects against permanent over voltages of up to 250V during resistance Frequency continuity and diode test measurements 1 2 Protection mechanisms 2 Description 2 1 Instrument Familiarization...

Page 6: ...s The unit of current Milliamp 1x10 or 0 001 amperes Microamp 1x10 or 0 000001 amperes 3 6 k M Ω Ω Ω Ohm The unit of resistance Kilohm 1x10 or 1000 ohms Megohm 1x10 or 1 000 000 ohms 3 6 F n µF F Farad The unit of capacitance Microfarad 1x10 or 0 000001 farads Nanofarad 1x10 or 0 000000001 farads 6 9 See Table 2 indicated for information about the keypad operations 2 3 Keypad Table 2 Keypad Functi...

Page 7: ...uipped with sound and light alarms against misconnection of test leads COM VΩHz C mA hFE 10A 1 At V Ω Hz ranges 1 The red lights at the V and COM jacks will be off after the test leads are plugged in 2 The buzzer will sound upon misconnection of the test leads in the mA or 10A jacks to warn the user At the same time the lights at the V and COM jacks will flash to remind the user to plug in the tes...

Page 8: ...nect the test leads to the circuit being measured 4 Read the displayed value The polarity of red test lead connection will be indicated when making a DCV measurement Note Unstable display may occur especially at DC200mV and AC2V ranges even though you do not put test leads into input terminals in this case if an erroneous reading is suspected short the V terminal and the COM terminal and make sure...

Page 9: ...on to current flow The unit of resistance is the ohm The Meter s resistance ranges are 200 00Ω 2 0000kΩ 20 000kΩ 200 00kΩ 2 0000MΩ 20 000MΩ and 200 00MΩ To measure resistance 1 Set the rotary switch to proper range 2 Connect the black and red test leads to the COM and terminals respectively 3 Connect the test leads to the circuit being measured and read the displayed value Ω Ω Some tips for measur...

Page 10: ... value Some tips for measuring capacitance The meter may take a few seconds to stabilize reading This is normal for high capacitance measuring To improve the accuracy of measurements less than 20nF subtract the residual capacitance of the Meter and leads 3 2 4 Continuity Check To avoid electrical shock and or damage to the instrument disconnect circuit power and discharge all high voltage capacito...

Page 11: ...hFE range 2 Connect the com plug and plug of the special multi function socket to the COM and hFE terminals 3 Determine whether the transistor to be tested is NPN or PNP type and locate the Emitter Base and Collector leads 4 Insert leads of the transistor into proper holes of the special multi function socket 5 The meter will show the approx hFE value 3 2 8 Current measurement To avoid damage to t...

Page 12: ...ange indication LCD will display 1 Low battery indication The is displayed when the battery is under the proper operation range Polarity indication displayed automatically Power source 9V Battery type NEDA 1604 6F22 or 006P Dimensions 195 L 92 W 55 H mm Weight 380g Approx battery included Accuracy is specified for one year after calibration at operating temperatures of 18 C to 28 C with relative h...

Page 13: ...ty Continuity beeper Range 50Ω Open circuit voltage Less than 700mV Overload protection 250Vdc or 250Vac rms 4 2 7 Transistor Description Range Test Condition Display read approx HFE value 0 1000 of transistor under test all type Base Current approx 10µA Vce approx 2 8V hFE 4 2 8 Capacitance Resolution Range Accuracy 10pF 0 1nF 1nF 10nF 20nF 200nF 20 0µF 200 µF 0 4 0 of rdg 20 digit s Overload pro...

Page 14: ...ne wave Resolution Range Accuracy 1mA 200mA 10A 2 5 of rdg 50 digits 0 1μA 2mA 0 8 of rdg 20 digits 10μA 1 2 of rdg 20 digits 5 Maintenance Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration performance test and service information 5 1 General Maintenance To avoid electrical shock or damage to the meter do not get water inside the cas...

Page 15: ...ff Disconnect test leads and or any connectors from the terminals Use a screwdriver to unscrew the two screws secured on the battery cover Take out the battery cover from the meter Remove the used batteries Replace with the new 9V batteries 6F22 Rejoin the battery cover and secure by the two screws Using this appliance in an environment with a strong radiated radio frequency electromagnetic field ...

Page 16: ...HYS006660 ...

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