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Major tech MT1877, Руководство пользователя, Страница: 6 / 28

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Major tech MT1877 Скачать руководство пользователя страница 6

6 

 

SYMBOLS AND ANNUNCIATORS 

)))

 

Continuity 

 

Low Battery 

 

Diode test

 

HOLD 

Data Hold 

AUTO 

Auto Ranging 

AC 

Alternating Current or Voltage 

DC 

Direct Current or Voltage 

V 

Volts 

A, mA, uA    Current range 

OPERATION 

To turn on the instrument turn the range knob from the 

OFF position to any measurement range. 

Note: 

For best battery life 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

 

30 minutes

 

elapse between uses. 

NOTE

: On some low AC and DC voltage ranges, with 

Содержание MT1877

Страница 1: ...1 mA A V V ...

Страница 2: ...2 ...

Страница 3: ...be switched to a current or resistance range or to the diode check or buzzer position Circuits must be de energized and isolated before carrying out resistance tests The rotary selector switch must only be turned after removing test connections All external voltages must be disconnected from the instrument before removing the battery Test leads and prods must be in good order clean and with no bro...

Страница 4: ...ions must be read and understood before an instrument is used They must be observed during the operation of this instrument Symbols used on this instrument are Caution refer to accompanying notes This symbol indicates that the operator must refer to an explanation in the Operating Instructions to avoid personal injury or damage to the meter ...

Страница 5: ...a potentially hazardous situation which if not avoided may result damage to the product This symbol advises the user that the terminal s so marked must not be connected to a circuit point at which the voltage with respect to earth ground exceeds in this case 1000 VAC or VDC Equipment protected throughout by Double Insulation Class II Equipment complies with current EU directives MAX 500V ...

Страница 6: ...uA Current range OPERATION To turn on the instrument turn the range knob from the OFF position to any measurement range Note For best battery life 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 30 minutes elapse between uses NOTE On some low AC and DC voltage ranges with ...

Страница 7: ... or DC measurement when in Voltages Amps mA uA Ω CAP Hz Backlight Button 1 Press the Backlight button the blue back light ON 2 Press the Backlight button again to exit the light mode Data Hold Button The Data Hold function allows the meter to freeze a measurement for later reference 1 Press the Data Hold button to freeze the reading on the indicator The indicator HOLD will be appear in the display...

Страница 8: ... Auto Range display indicator will turn off The Manual Range display indicator will turn on 2 Press the RANGE button to step through the available ranges until you select the range you want 3 Press and hold the RANGE button for 2 seconds to exit the Manual Ranging mode and return to Auto Ranging REL button REL Key is the relative value measurement key that acts with trigger Except Hz Duty Diode an...

Страница 9: ...d into the negative COM terminal and the red test lead into the positive V terminal 2 Set the function switch to the VAC or VDC position 3 Use the MODE button to select AC or DC Voltage 4 Connect the test leads in parallel to the circuit under test 5 Read the voltage measurement on the LCD display DC CURRENT MEASUREMENT 1 Insert the black test lead banana plug into the negative COM jack 2 For curr...

Страница 10: ...button until DC appears in the display 6 Remove power from the circuit under test then open up the circuit at the point where you wish to measure current 7 Touch the black test probe tip to the negative side of the circuit Touch the red test probe tip to the positive side of the circuit 8 Apply power to the circuit 9 Read the current in the display The display will indicate the proper decimal poin...

Страница 11: ...e A position and insert the red test lead banana plug into the 10A jack 5 Press the MODE button The measurement mode will change between AC or DC as required 6 Remove power from the circuit under test then open up the circuit at the point where you wish to measure current 7 Touch the black test probe tip to the negative side of the circuit And touch the red test probe tip to the positive side of t...

Страница 12: ...sert the black test lead plug into the negative COM socket and the red test lead plug into the positive Ω jack 3 Press the MODE button until Ω appears in the display 4 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 5 Read the resistance in the display ...

Страница 13: ...e positive socket 3 Press the MODE button until appears in the display 4 Touch the test probe tips to the circuit or wire you wish to check 5 If the resistance is less than 50Ω the audible signal will sound The display will also show the actual resistance in ohms DIODE TEST WARNING To avoid electric shock do not test any diode that has voltage on it 1 Set the function switch to the position 2 Inse...

Страница 14: ...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 C If both readings are very small or zero the device is shorted NOTE The value indicated in the display during the diode check is the forward voltage CAPACITANCE MEASUREMENT WARNING To avoid electric shock discharge the capacitor under test before me...

Страница 15: ...ay 5 The display will indicate the proper decimal point and value FREQUENCY MEASUREMENT 1 Set the function switch to the Hz position 2 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive Hz jack 3 Touch the test probe tips to the circuit under test 4 Read the frequency in the display The digital reading will indicate the proper deci...

Страница 16: ...ight red SPECIFICATIONS Technical Insulation Class2 Double insulation Over voltage category CATIV 600V CATIII 1000V NOTE These meters meet CAT III and CAT IV IEC 61010 standards The IEC 61010 safety standard defines four over voltage categories CAT I to IV based on the magnitude of danger from transient impulses CAT III meters are designed to protect against transients in fixed equipment installat...

Страница 17: ...r range OL mark indication NON CONTACT VOLTAGE NCV The NCV function works on any rotary switch position 1 Test the detector on a known live circuit before use 2 Hold the top of the meter very close to the voltage source as shown 3 If voltage is present the back light will flash a bright red Low battery indication a battery symbol is displayed when the battery voltage drops below the operating leve...

Страница 18: ...lative humidity 90 0oC to 30oC 75 30oC to 40oC 45 40oC to 50oC For inside use max height Operating 3000m Storage 10 000m Pollution degree 2 Safety The instrument complies with IEC EN 61010 1 2001 and IEC EN 61010 031 2002 Power One 9V battery NEDA 1604 IEC 6F22 Dimensions 182 H x 82 W x55 D mm Weight Approx 375g Accuracy Accuracy is given at 18 oC to 28 oC 65 oF to 83 oF less than 70 RH ...

Страница 19: ... 1000V 1V 1 0 of rdg 4digits Input Impedance 10MΩ Maximum Input 1000V dc or 1000V ac rms AC Voltage Auto ranging Range Resolution Accuracy 400 0mV 0 1mV 1 0 of rdg 3 digits 4 000V 1mV 40 00V 10mV 400 0V 100mV 1000V 1V 1 2 of rdg 5 digits Input Impedance 10MΩ AC Response 50 Hz to 400Hz Maximum Input 1000V dc or 1000V ac rms ...

Страница 20: ...load protection FF500mA 1000V and F10A 1000V Fuse Maximum Input 400uA dc on uA range 400mA dc on mA range 10A dc on 10A range AC Current Auto ranging Range Resolution Accuracy 400 0uA 0 1uA 1 2 of rdg 5 digits 4000uA 1uA 40 00mA 10uA 400 0mA 100uA 10A 10mA 2 5 of rdg 5 digits Overload Protection FF 500mA 1000V and F10A 1000V Fuse AC Response 50 Hz to 400 Hz ...

Страница 21: ...gits 4 000kΩ 1Ω 0 8 of rdg 2 digits 40 00kΩ 10Ω 400 0kΩ 100Ω 4 000MΩ 1kΩ 2 5 of rdg 8digits 40 00MΩ 10kΩ Input Protection 1000V dc or 1000V ac rms Capacitance Auto ranging Range Resolution Accuracy 40 00nF 10pF 5 0 of rdg 7 dgts 400 0nF 0 1nF 3 0 of rdg 5 dgts 4 000uF 1nF 40 00uF 10nF 100 0uF 0 1uF 5 0 of rdg 7 dgts Input Protection 1000V dc or 1000V ac rms ...

Страница 22: ...kHz 10Hz 400 0kHz 100Hz 5 00MHz 1kHz 1 2 of rdg 4 dgts Sensitivity 0 5V RMS while 1MHz Sensitivity 3V RMS while 1MHz Input Protection 1000V dc or 1000V ac rms Duty Cycle Range Resolution Accuracy 0 1 99 9 0 1 1 2 of rdg 2 dgts Pulse width 100us 100ms Frequency width 5Hz 150 kHz Sensitivity 0 5V RMS Overload protection 1000V dc or ac rms ...

Страница 23: ...hold Less than50Ω Test current MAX 1 5mA Overload protection 1000V dc or ac rms Accessories Included accessories Standard Red Black lead set with test probes BATTERY and FUSE replacement WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the battery door 1 When the batteries become exhausted or drop below the operating voltage the battery warning ...

Страница 24: ...ery cover removed BATTERY INSTALLATION WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the battery cover Do not operate the instrument with the battery cover removed 1 Disconnect the test leads from the meter 2 Open the battery cover by loosening the screw using a Phillips head screwdriver 3 Insert the battery into battery holder observing the c...

Страница 25: ... battery cover 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 old fuse from its holder by gently pulling it out 4 Install the new fuse into the holder 5 Always use a fuse of the proper size and value 500mA 1000V fast blow for the 400mA range 10A 1000V fast blow for the 10A ran...

Страница 26: ...26 WARNING To avoid electric shock do not operate your meter until the fuse door is in place and fastened securely ...

Страница 27: ...27 ...

Страница 28: ...28 ...

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