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770E

DIGITAL MULTIMETER

OPERATOR’S MANUAL

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Содержание 770E

Страница 1: ...770E DIGITAL MULTIMETER OPERATOR S MANUAL ...

Страница 2: ...5 6 10 Diode and Audible continuity test 5 6 11 Transistor hFE test 5 6 12 Non Contact AC Voltage NCV detection 5 7 Operating instructions 5 8 7 1 Attention before operation 5 7 2 Measuring DC AC Voltage 5 7 3 Measuring DC AC Current 6 7 4 Measuring Resistance 6 7 5 Measuring Capacitance 7 7 6 Measuring Frequency Duty cycle 7 7 7 Measuring Temperature 7 7 8 Diode Audible continuity Testing 7 7 9 T...

Страница 3: ...tically control the LCD backlight to lighten or go out NCV red light Non Contact AC Voltage NCV detection red light NCV green light Non Contact AC Voltage NCV detection green light LCD display 40000 counts digit analogue bar graph full function symbol display SELECT key This key work on the range press the key to choose resistance diode or continuity test on the voltage or current range change to ...

Страница 4: ...ording to standard procedures when used in conjunctions with the supplied test leads To replace damaged test leads with only the same model or same electric specifications 4 2 Toavid risk of electric shock do not use the meters before the cover is in place 4 3 The range switch should be right position for the testing 4 4 To avoid electric shock and damaging the instruments the input signals are fo...

Страница 5: ... temperature 20 C 60 C max 90 RH 6 1 DC Voltage Range Resolution Accuracy 40mV 1μV 0 5 of rdg 5 digits 400mV 10μV 0 05 of rdg 2 digits 4V 100μV 40V 1mV 400V 10mV 1000V 100mV 0 05 of rdg 5 digits Impedance 10MΩ More than 100MΩ on 40mV 400mV range Overload protection 1000V DC or 750V AC rms 6 2 AC Voltage True RMS Impedance 10MΩ More than 100MΩ on 40mV 400mV range Overload protection 1000V DC or 750...

Страница 6: ...4kΩ 0 1Ω 0 2 of rdg 10 digits 40kΩ 1Ω 400kΩ 10Ω 4MΩ 100Ω 40MΩ 1kΩ 0 5 of rdg 10 digits Overload protection 500V DC or AC rms 6 6 Capacitance Range Accuracy Resolution 9 999nF 5 0 of rdg 10 digits 1pF 99 99nF 3 0 of rdg 10 digits 10pF 999 9nF 2 5 of rdg 5 digits 100pF 9 999µF 1nF 99 99µF 5 0 of rdg 10 digits 10nF 999 9µF 10 0 of rdg 20 digits 100nF 9 999mF 1µF 99 99mF 10µF Overload protection 500V ...

Страница 7: ...s if resistance is less than 50Ω Open circuit voltage approx 1V Overload protection 500V DC or AC rms 6 11 Transistor hFE test Test range 0 1000 Ib 10µA Vce 1 8V Approx 6 12 Non Contact AC Voltage NCV detection Test voltage range 90V 1000V AC rms The NCV red light and green light will light up alternately together with sound 7 Operating instructions 7 1 Attention before operation 7 1 1 Check batte...

Страница 8: ... the red lead to the 20A jack 7 3 3 Connect test leads in series with the load under measurement 7 3 4 You can get reading from LCD The polarity of the red lead connection will be indicated along with the DC current value NOTE 1 When the value scale to be measured is unknown beforehand set the range selector at the highest position 2 When only OL is displayed it indicates over range situation and ...

Страница 9: ...jack 7 6 3 Push Hz Duty key to choose Frequency or Duty cycle test 7 6 4 Connect the probe across the source or load under measurement 7 6 5 You can get reading from LCD 7 7 Measuring Temperature 7 7 1 Set the rotary switch at the desired range position push SELECT to choose or measurement 7 7 2 Connect the black banana plug of the sensor to COMT jack and the red banana plug to the μAmAT jack 7 7 ...

Страница 10: ...st Do not rely on non contact voltage detector to determine the presence of voltage wire Detection operation may be subject to socket design insulation thickness and different type and other factors 2 When the meter input terminals presence voltage due to the influence of presence voltage voltage sensing indicator may also be bright 3 Keep the meter away from electrical noise sources during the te...

Страница 11: ... leads if the lead is exposed and should adopt the leads with the same specifications as origin 10 2 Use only moist fabric or small amount of detergent but not chemical solution for cleaning 10 3 Do not use the meter before the back cover is properly closed and screw secured Upon any abnormality stop operation immediately and send the meter for maintenance 10 4 Please take out the battery when not...

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