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⑨.

 

HFE 测试插孔 

2.2.

 

显示器符号说明 

 

符号 

说明 

 

电池欠压指示符/电池电量低。 

为避免错误的读数而导致遭受到电击或人身伤害,本电池低压符号

显示出现时,应尽快更换电池。 

 

自动关机功能指示符。 

 

输入极性指示负极 

 

交流输入指示。 

 

直流输入指示。 

 

仪表在二极管/通断测试模式下。 

 

仪表在数据保持模式下。 

NCV 

仪表在非接触交流电压侦测模式下。 

hFE 

三极管放大倍数测量 

V, mV 

V:伏特,电压的单位 
mV:毫伏,1x10

-3

或  0.001  伏特 

A, mA 

A:安培,电流的单位。 
mA:毫安,1x x10

-3

或  0.001  安培。 

, k

, M

 

:欧姆,电阻的单位。 

k

:千欧,  1000  欧姆。 

M

:兆欧,  1,000,000 欧姆。 

2.3.

 

功能按键说明 

按  键 

                        功  能  说  明 

HOLD 

按此键保持该瞬间的测量值。再按下就取消该功能。 

 

短按此键,开启背光,再次短按该键,关闭背光;若无操作,15 秒钟
后自动关闭。长按此键约 3 秒,辅助照明开启,同时背光灯点亮,短
按可关掉照明及背光灯。若不按此键,30 秒后自动关闭。.. 

2.4.

 

输入插座说明 

输入插座 

描  述 

COM 

所有测量的公共输入端与黑色测试笔或专用多功能测试座的公共输出
插头相连。 

V

mA   

电压、电流 mA、电阻、二极管、蜂鸣器通断测量的正输入端(与红
色测试笔相连)。 

10A 

电流 10A 的正输入端(与红色测试笔相连)。 

Summary of Contents for MT-1220

Page 1: ...MT 1220 MT 1225 3 1 2 Digital Multimeter User s Manual 1 st Edition 2020 2020 Copyright by Prokit s Industries Co Ltd...

Page 2: ...this meter ensure that the test lead is flawless 1 1 2 Safety Considerations When the meter is used in the vicinity of the equipment that produces strong electromagnetic interferences the reading on t...

Page 3: ...the circuit to be measured the operator must first power off the aforesaid circuit Before repairing TV sets or measuring power switching circuit the operator must be careful enough to prevent high amp...

Page 4: ...itance may promise the dangerous voltages even if the power supply to the meter is cut off The operator should stop using and maintain the meter immediately if any abnormality has been observed on the...

Page 5: ...2 Symbols Description Symbol Description Low battery To avoid electric shock or personal injury as a result of incorrect reading promptly replace the battery when the low battery symbol appears Auto p...

Page 6: ...scription COM All public input terminals to be measured are connected to test leads in black or the public output plugs of exclusive multi function test sockets V mA Positive input terminals connected...

Page 7: ...asured In parallel connection with the circuit to be measured Read the measured voltage value on LCD screen When DC voltage measurement is attempted the display unit will show the voltage polarity of...

Page 8: ...t the test leads in black and in red to COM input socket and V input socket respectively Connect the test leads in black and in red to the positive and negative poles of the diode to be tested respect...

Page 9: ...d current is less than 200mA connect the test lead in red to a 10A input socket when the measured current is 200mA 10A Disconnection of the circuit to be measured Connect the test lead in black to the...

Page 10: ...temperature is less than 10 and relative humidity is below 80 Storage temperature humidity 10 60O C Batteries shall be removed when RH is below 70 Coefficient of temperature 0 1 accuracy O C 18 O C or...

Page 11: ...4 2 2 AC Voltage Measuring range Resolution Accuracy 200V 100mV 1 readings 10 digits 600V 1V 1 2 readings 10 digits Input impedance 1M Maximal input voltage 600V DC or AC valid value Frequency respon...

Page 12: ...letion of previous measurement 4 2 7 Temperature only MT 1225 Measuring range Resolution Accuracy 20 1000 1 1 0 Reading 3 digits Overload protection 250V DC AC 5 Meter Maintenance This section provide...

Page 13: ...ver to replace batteries unless you have already powered off the device and carried out an examination to ensure that the test lead has been disconnected from the circuit to be measured Battery Replac...

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Page 23: ...MT 1220 MT 1225 3 1 2 1 MT 12 2000 AD 1 1 A B 60Vdc 30Vac 3 1 5V AAA 600V...

Page 24: ...AC DC CAT 600 V European Union 1 2 600V 250V mA F200mA 250V A F10A 250V 2 2 1 LED...

Page 25: ...HFE 2 2 NCV hFE V mV V mV 1x10 3 0 001 A mA A mA 1x x10 3 0 001 k M k 1000 M 1 000 000 2 3 HOLD 15 3 30 2 4 COM V mA mA 10A 10A...

Page 26: ...2 5 K 3 3 1 HOLD H H 15 3 2 200 0mV 2 000V 20 00V 200 0V 600V 200 0V 600V 600V 600V V V COM V 200 0 2 000k 200 0k 2 000M 20 00M COM V 20M OL...

Page 27: ...COM V OL 0 5V 0 8V 50 hFE 36V hFE NPN PNP e b c HFE hFE 2mA 20 00mA 200 0mA 10 00A 250V COM 200mA mA 200mA 10A 10A OL COM V NCV NCV 30V...

Page 28: ...RH 0 1 18 28 600V mA F200mA 250V A F 10A 250V 3 2000 counts OL 3 x 1 5V AAA 148mm L 79mm W 48mm H 210g 4 2 18 28 80 200mV 0 1mV 0 5 5 2V 1mV 20V 10mV 200V 100mV 600V 1V 0 8 5 1M 600V DC AC 200V 100mV...

Page 29: ...1 3 2k 1 200k 100 2M 1k 20M 10k 1 5 3 250V DC AC 2 4 V 0 8mA 2 4V 30 250V DC AC hFE hFE 0 1000 10 A Vce 2 8V 2mA MT 1220 0 01 A 1 5 20mA 0 01mA 200mA 0 1mA 10 00A 10mA 3 10 mA F200mA 250V 10A F10A 250...

Page 30: ...MT 1225 20 1000 1 1 0 Reading 3 digits 250V DC AC 5 5 1 5 2 F200mA 250V F10A 250V 3 x 1 5V AAA...

Page 31: ...12 0755 83692415 83692986 83246594 83247554 400 169 9629 0755 83692143 130 7 5 886 2 22183233 E mail pk mail prokits com tw 1365 25 403 5 0755 83692415 0755 83692143 400 1699 629 E mail shenzhen mail...

Page 32: ...2020 Prokit s Industries Co Ltd All rights reserved 2020001...

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