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INSTRUCTION MANUAL

LCR Meter  

MT957

Summary of Contents for MT957

Page 1: ...INSTRUCTION MANUAL LCR Meter MT957 ...

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Page 3: ...ing material Ÿ Turn off power to the circuit under test before cutting unsoldering or breaking the circuit Small amounts of current can be dangerous Ÿ Use caution when working above 60V DC or 30V AC RMS such voltages pose a shock hazard Ÿ When using the probes keep your fingers behind the finger guards on the probes Ÿ Measuring voltage which exceeds the limits of the multimeter may damage the mete...

Page 4: ...the meter and its test leads should not be handled when these terminals are energized Equipment is protected by double or reinforced insulation MAX WARNING This WARNING symbol indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION This CAUTION symbol indicates a potentially hazardous situation which if not avoided may result in damage to th...

Page 5: ... Positive input jack for inductance measurements 4 Negative input jack for inductance measurements 5 Positive input jack 6 COM Negative input jack 7 Diode pushbutton 8 RANGE pushbutton 9 HOLD pushbutton 10 MAX MIN pushbutton 11 Relative Zero pushbutton 12 Backlight pushbutton ...

Page 6: ...with function indication Polarity Automatic negative polarity indication Overrange OL mark indication Low battery indication The is displayed when the battery voltage drops below the operating level Measurement rate 4 times per second nominal Auto power off Meter automatically shuts down after approx 15 minutes of inactivity Operating environment 0 C to 50 C 32 F to 122 F at 70 relative humidity St...

Page 7: ...00 0kΩ 1 1000MΩ 11 000MΩ 40 00MΩ Resolution 0 01Ω 0 1Ω 1Ω 10Ω 100Ω 1kΩ 10 kΩ 1 2 of rdg 0 5Ω 1 2 of rdg 10 dgts 2 5 of rdg 10 dgts Maximum Input 600V DC or 600V AC RMS Capacitance Auto ranging Accuracy Range 11 000nF 110 00nF 1 1000uF Resolution 1pF 10pF 100pF 5 0 of rdg 0 7nF 5 0 of rdg 15 dgts 11 000uF 110 00uF 1 1000mF 1nF 10nF 0 1uF 11 000mF 1uF 3 0 of rdg 10 dgts 110 00mF 10uF 10 0 of rdg 10 ...

Page 8: ...t voltage 1 1V DC typical Overload protection 600V DC or AC RMS Audible continuity Audible threshold Less than 30Ω Test current 0 3mA Overload protection 600V DC or AC RMS OPERATION 1 ALWAYS turn the function switch to the OFF position when the meter is not in use This meter has Auto OFF that automatically shuts the meter OFF if 15 minutes elapse between uses 2 If OL appears in the display during ...

Page 9: ...d return to Auto ranging press and hold the RANGE key for 2 seconds MAX MIN Note When using the MAX MIN function in Autoranging mode the meter will lock into the range that is displayed on the LCD when MAX MIN is activated If a MAX MIN reading exceeds that range an OL will be displayed Select the desired range BEFORE entering MAX MIN mode 1 Press the MAX MIN key to activate the MAX MIN recording m...

Page 10: ...ana plug into the positive Ω jack 3 Touch the test probe tips across the circuit or part under test It is best to disconnect one side of the part under test so the rest of the circuit will not interfere with the resistance reading 4 Read the resistance in the display The display will indicate the proper decimal point value and symbol CONTINUITY CHECK WARNING To avoid electric shock never measure c...

Page 11: ...her reading shows OL the diode is good B If both readings show OL the device is open C If both readings are very small or 0 the device is shorted CAPACITANCE MEASUREMENTS WARNING To avoid electric shock disconnect power to the unit under test and discharge all capacitors before taking any capacitance measurements Remove the batteries and unplug the line cords 1 Set the function switch to the CAP p...

Page 12: ... 4 Read the temperature in the display The digital reading will indicate the proper decimal point and value WARNING To avoid electric shock be sure the inductance has been removed before changing to another measurement function REPLACING THE BATTERY WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the battery door 1 When the batteries become exha...

Page 13: ...the fuses and battery to make sure that they are still good and that they are properly inserted REPLACING THE FUSES WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the fuse door 1 Disconnect the test leads from the meter and any item under test 2 Open the fuse door by loosening the screw on the door using a Phillips head screwdriver 3 Remove the...

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