Extech Instruments MultiTec MT310, User Manual

Page 1: ...User s Guide MultiTecTM Series Digital MultiMeters with PC Interface Models MT310 MT320 MT330...

Page 2: ...eration outside of specification improper maintenance or repair or unauthorized modification Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose a...

Page 3: ...ance Frequency and Capacitance All models are Autoranging and include a PC Interface feature The MT320 and MT330 also measure temperature The Model MT330 is True RMS responding Safety International Sa...

Page 4: ...ts 6 Use great care when making measurements if the voltages are greater than 25VAC rms or 35VDC These voltages are considered a shock hazard 7 Always discharge capacitors and remove power from the de...

Page 5: ...reading 5 digits 100 0 400 0mV 1 5 reading 5 digits 4 000V 40 00V 400 0V 1 0 reading 5 digits 40Hz to 1kHz AC Voltage V AC Model MT330 True RMS 700 0V 1 5 reading 5 digits 400 0 A 4000 A 40 00mA 400 0...

Page 6: ...z 500 0Hz 5 000kHz 50 00kHz 500 0kHz 5 000MHz 10 00MHz 0 1 reading 2 digits 250mVac peak minimum Capacitance 40 00nF 400 0nF 4 000uF 40 00uF 100 0uF 2 reading 10 digits 0 0 212 0 F 3 5 digits 212 0 40...

Page 7: ...C peak General Specifications Duty Cycle 0 1 to 99 9 Diode Test Test voltage of 1 5V max Continuity Check Audible tone if the resistance is less than 60 Input Impedance 10M VDC and VAC 100M in the 400...

Page 8: ...ure 64 o F to 82 o F 18 o C to 28 o C Relative Humidity 80 RH operating 70 RH storage Dimensions Weight 3 5x7x1 3 88x178x33mm 0 7lb 315g Description Meter MT330 pictured 1 3 3 4 Digit 4000 count Liqui...

Page 9: ...own fuse indicator 7 uA mA blown fuse indicator 8 Incorrect test lead insertion indicator active in Capacitance Hz Ohms Diode Continuity and ACV DCV modes 9 Power warning for Ohm Cap and Diode 10 Cont...

Page 10: ...POWER key wait three seconds and press the POWER key again 2 If OL appears on the display during a measurement the measurement exceeds the range selected Change to a higher range AC or DC Voltage Meas...

Page 11: ...to 400mA set the function switch to the mA position and insert the red test lead into the mA A jack 4 For current measurements up to 20A AC set the function switch to the 20A position and insert the...

Page 12: ...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 5 For Resistance tests read the resistance on the display 6 For Conti...

Page 13: ...ads Note this reading 6 The diode or junction can be evaluated as follows A If one reading shows a value and the other reading shows OL the diode is good B If both readings show OL the device is open...

Page 14: ...device under test 4 Wait 30 seconds for the measurement to stabilize then read the LCD Auto Manual Range The meter powers up in Auto Range mode For Manual range applications follow these steps 1 Pres...

Page 15: ...2 Press the REL button to store the present reading and the REL indicator will appear on the display 3 The display will now indicate the difference between the stored value and the measured value LCD...

Page 16: ...s 1 When the battery drops below the operating voltage the battery symbol will appear in the right hand side of the LCD display The battery should be replaced at this point 2 Remove power from the met...

Page 17: ...ng it out 3 To access the 20A fuse remove the third screw under the tilt stand remove the back cover and gently lift the printed circuit boards 4 Install the new fuse into the holder 5 Always use a fu...

Page 18: ...he RS 232 cable between the meter s DB 9 connector top of meter and the PC s serial port 2 Select the Multimeter icon in the START PROGRAM menu 3 Select Setup from the Main Menu bar and then Com Port...