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Digital multimeter

Ⅰ. Overview

As a kind of intelligent 3 5/6 digital multimeter with automatic identification, steady performance and high

reliability, this meter is equipped with LCD display device with the text height of 33mm which features

clear reading, direct-viewing display and convenient operation. It can be used to measure DC voltage, AC

voltage, DC current, AC current, resistance, capacitance, frequency, diode and continuity test; meanwhile, it

is available for unit symbol display, data retention, the measurement of maximum and minimum value,

automatic/manual range switching, automatic power off and alarm function. The complete machine takes a

switching integrated circuit which can directly drive LCD microprocessor and double-integrating A/D and a

digital display drive offering high resolution and high precision. Since the meter features complete

functions, high measurement accuracy and convenient operation, it is the ideal tool in laboratory and

factory as well as for radio fans and family.

Ⅱ. Open-package Inspection

Open the package box and take out the meter, check carefully if the following accessories are absent or

damaged. If there is any absence or damage, please contact the distributor immediately.

Содержание VC70D

Страница 1: ... measurement of maximum and minimum value automatic manual range switching automatic power off and alarm function The complete machine takes a switching integrated circuit which can directly drive LCD microprocessor and double integrating A D and a digital display drive offering high resolution and high precision Since the meter features complete functions high measurement accuracy and convenient ...

Страница 2: ...afety Considerations In accordance with IEC1010 clause the safety standard issued by International Electrotechnical Commission This product is designed and produced according to the safety requirements of pollution level Ⅱ Warning In order to avoid endangering the operator s safety prior to the operation of the instrument please read the ...

Страница 3: ...damaged it is necessary to replace another one of the same model or the same electrical specification 4 Don t use other unconfirmed or disapproved fuses Only the same model or same specification fuses as we provide can be used Before the replacement the testlead must leave the measuring point and ensure there is no any signal at the input terminal 5 Don t use other unconfirmed or disapproved batte...

Страница 4: ... socket don t measure any voltage for fear that the meter should be damaged and the operator s safety be endangered 10 Don t try calibrating or repairing the meter When it is indeed necessary for that only the qualified professional personnel who have had special training or gained approval can make it 11 During measurement the requirement of measurement function must be in accordance with LCD dis...

Страница 5: ...e meter will be damaged and the safety be endangered Ⅳ Description of Safety Symbols Warning AC DC High Voltage Danger In accordance with the instructions of European Trade Union Ground Fuse Double Insulation Low battery Ⅴ Description of Instrument Panel and Pushbutton Functions 1 Instrument model ...

Страница 6: ...e in which the maximum value is held press the button again to enter MIN mode in which the minimum value is held After the MAX MIN mode is entered the display device indicates the current value Press down MAX MIN button for 2 seconds and then exit from MAX or MIN test 3 3 Manual range selection switch It is automatic identification when start up Press SELECT to enter automatic measurement Trigger ...

Страница 7: ...ld readings Press the button to lock the displayed value and press it again to unlock it 4 Power function switch 5 Function selection button 6 10A current input jack Measure the positive input terminal of 10A shift AC DC current and insert red testlead 7 mA input port Measure the positive input terminal of AC DC 8 COM input port Measure the negative input terminal and insert black testlead 9 input...

Страница 8: ...rmant power off state If you want to restart power power on it is available to press SELECT RANGE MAX MIN or HOLD key or press the power switch to make it If you want to cancel automatic power off press SELECT at the same time when you press down the power switch then automatic power off will be cancelled after power on and APO symbol will be also turned off VII Features 1 General features 1 1 Dis...

Страница 9: ...0 50 relative humidity 80 1 10 Power 6F22 9V battery 1 11 Volume Dimensions 185mm 91mm 49mm Length width and height 1 12 Weight About 408g including battery 2 Technical features 2 1 Accuracy a reading d digits the ambient temperature for ensuring accuracy 23 5 relative humidity 75 2 2 The warranty period of calibration is one year from ex factory date VIII DC Voltage DCV 1 Trigger AC DC EF at this...

Страница 10: ...ANGE MAX MIN HOLD play their function controlling 3 Touch the measuring point with the testlead and connect it in parallel to the circuit being tested and the polarity of the red testlead wire and the tested voltage value are spontaneously displayed on the display Caution a Voltages over DC1000V or AC750V cannot be tested b When measuring high voltages special precautions must be taken to avoid el...

Страница 11: ...X AC Voltage ACV 1 Trigger AC DC EF at this time it is at the AC DC voltage automatic identification mode and respectively plug in the red and black testleads into the holes of VΩHz and COM as shown in the following diagram 2 The initial state of the meter is the AC DC voltage automatic identification mode and a symbol of SCAN is displayed at this time such buttons as RANGE MAX MIN HOLD have no co...

Страница 12: ...sted voltage value are spontaneously displayed on the display Caution a Voltages over DC1000V or AC750V cannot be tested If the OL shows on the LCD under the manual range mode it means the range has been exceeded and it is necessary to select higher range to complete this measurement b At automatic identification measurement the AC threshold voltage is 0 5V in case the voltage to be measured is sm...

Страница 13: ... sine wave Frequency response 600mV 40 100 Hz 6V 750V 40 400 Hz X DC Current DCA 1 Put the black testlead into the COM terminal and the red testlead into the mA or 10A terminal Trigger the button or button select automatic identification ACA DCA measurement and at this time such buttons as RANGE MAX MIN HOLD do not have the controlling functions and only when the SELECT button is pressed again to ...

Страница 14: ...nd at mA mode the current bigger than 600 mA cannot be measured Otherwise this will lead to the burning of the fuse or damage the instrument b When the testleads plugged in the input terminal of the current it is strictly prohibited to have the testlead connected in parallel on any circuits Range Accuracy Resolution 60mA 1 0 10d 10μA 600mA 100μA 10A 10mA The maximum input current 10A not exceeding...

Страница 15: ...lease press SELECT button to select automatic ACA range to test 2 In case OL is displayed on the LCD it indicates the current being measured has exceed the current range and please select higher range for measurements Caution a At the 10A range current bigger than 10A cannot be measured and at mA mode the current bigger than 600 mA cannot be measured Otherwise this will lead to the burning of the ...

Страница 16: ...rload protection 0 6A 250Vfuse 10A 250V fuse Frequency response 40 100Hz XII Resistance 1 Trigger button and put the red and black testleads into the VΩHz and COM terminal 2 After the instrument is started triggering button is the automatic identification measurement of resistance diode buzzer and capacitance Under the mode of automatic identification such buttons as RANGE MAX MIN HOLD do not play...

Страница 17: ... any occurrence of voltage may lead to inaccurate readings and if the 250V protection voltage is exceeded it may damage the meter or threaten the safety of the user c When using the range of 600Ω first to short circuit the testleads and measure the resistance of the lead wire and then deduct it in the actual measurement Range Accuracy Resolution 600Ω 0 8 5d 0 1Ω 6kΩ 0 8 4d 1Ω 60kΩ 10Ω 600kΩ 100Ω 6...

Страница 18: ...tion such buttons of RANGE MAX MIN HOLD do not play the controlling functions trigger SELECT to select the diode or buzzer measurement at this time such buttons as MAX MIN HOLD re get the controlling functions 3 Connect the red testlead to the positive of the diode the black testlead to the negative of the diode Caution a In case the diode is open circuit or the polarities are connected reversely ...

Страница 19: ...easurement condition Diode forward voltage drop Forward DC current is about 1 0mA and backward voltage is about 3 0V 30Ω Buzzer sounds for a long time and the resistance of the two points is measured as 30Ω Open circuit voltage is about 1 2V Overload protection 250V DC or AC peak value XIV Capacitance C 1 Press button and respectively put the red and black testleads into VΩHz and COM 2 After the i...

Страница 20: ...easurement mode and at this time such buttons as MAX MIN HOLD RANGE play the functions When the electric supply 220V is mistakenly fed into the capacitance mode the circuit may have automatic protection and it will not damage the meter Caution a When measuring the capacitance all the powers within the tested circuits must be disconnected and the capacitance should be sufficiently discharged when m...

Страница 21: ...estlead into VΩHz and COM 3 Have the testing end of the testlead connected in parallel with the signal source to be measured and read the results from the display Caution a Do not input signals higher than 60V otherwise it may damage the instrument and bring dangers to human safety b After all the measurements are completed it is necessary to disconnect the testlead and the tested circuit Range Ac...

Страница 22: ...ctric field measurement mode 2 Put the area of the meter which the arrow indicated as below towards the measured object 3 The strength of the electric field is judged by the quantity of displayed on the LCD and based on the strength of the electric field the buzzer will show interval and continuous beeping sound Caution It is prohibited to input any voltage at any input ports Ç È õ ü Ö Á µ ç Ñ µ ç...

Страница 23: ... of the instrument and do not use such strong solvents as abrasives and alcohol 4 If you will not use this meter for a long time the battery should be removed to avoid the battery leakage from corroding the instrument 5 Pay attention to the battery and when the LCD shows a flashing symbol the battery should be replaced The steps are as follows 1 Loosen the screw on the back cover that secures the ...

Страница 24: ... cover has not been tightened please do not use this meter 4 Before replace the battery or fuse please disconnect the testlead to the measured part and turn off the meter This instruction is subjected to any alteration without any further notice The content of this instruction is considered correct and in case readers find any errors and missing parts please contact the manufacturer The company sh...

Страница 25: ...Digital multimeter 25 25 601E 070D 000A ...

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