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(八).頻率測量 

1.

 

將錶棒或遮罩電纜接入“COM"和“V/Ω/Hz"輸入端; 

2.

 

將量程開關轉到頻率檔上,將錶棒或電纜接在信號源或被測
負載上。 

注意: 

1.

 

輸入超過 10Vrms 時,可以讀數,但可能超差; 

2.

 

在雜訊環境下,測量小信號時最好使用遮罩電纜; 

3.

 

在測量高電壓電路時,千萬不要觸及高壓電路; 

4.

 

禁止輸入超過 250V 直流或交流峰值的電壓值,以免損壞儀
錶。 

(九).二極體及通斷測試 

1.

 

將黑錶棒插入“COM"插座,紅錶棒插入“V/Ω/Hz"插座
(注意紅錶棒極性為“+"極)

; 

2.

 

將量程開關轉至“

"檔,並將錶棒連接到待測試二極

體,讀數為二極體正向壓降的近似值; 

3.

 

將錶棒連接到待測線路的兩點,如果內置蜂鳴器發聲,則兩
點之間電阻值低於約(70±20)Ω。 

(十).溫度測量 

測量溫度時,將熱電偶感測器的冷端(自由端)負極插入
“COM"插座,正極插入“mA"插座中,熱電偶的工作端(測
溫端)置於待測物上面或內部,可直接從螢幕上讀取溫度值,
讀數為攝氏度。 

(十一).三極管 hFE 

1.將量程開關置於 hFE 檔; 
2.將電晶體測試座插入“COM"和“mA"插座. 
3.確定所測電晶體為 NPN 或 PNP 型,將發射極、基極、集電

極分別插入測試附件上相應的插孔。 

(十二).資料保持 

按下保持開關,當前資料就會保持在螢幕上。 

(十三).自動斷電 

當儀錶靜置 15 分鐘後,儀錶便自動斷電進入休眠狀態;若要
重新啟動電源,再按兩次“POWER"鍵,就可重新接通電源。 

 

 

21

Summary of Contents for MT-1270

Page 1: ...MT 1270 3 1 2 Digital Multimeter User s Manual 1st Edition 2013 2013 Copyright by Prokit s Industries Co Ltd...

Page 2: ...limit when measuring each range 2 The safety voltage is below 36V please make sure the test leads connect reliably link up correctly isolate properly to avoid electric shock when measuring the voltage...

Page 3: ...Accessory user manual CAT III test leads temperature probe test socket Technical Property 2 1 Accuracy a x reading digits at 23 5 relative humidity 75 one year calibration guarantee since the time dis...

Page 4: ...RMS of sine wave 2 3 3 DCA Range Accuracy Resolution 2mA 1uA 20mA 0 8 10d 10uA 200mA 1 2 8d 100uA 10A 2 0 5d 10mA Max input voltage drop 200mV Max input current 10A less than 10 seconds Overload prote...

Page 5: ...ad protection 250V DC and AC peak value Note At Range 200 short circuit the test lead to test the wire resistance and then subtract it from the real measurement WARNING DO NOT input any voltage at res...

Page 6: ...any voltage at this range for safety 2 3 9 Diode and Continuity Test Range Description Test Condition Forward voltage drop of diode Forward DC Current approx 1mA Counter Voltage approx 3V Buzzer soun...

Page 7: ...ing terminal 6 Voltage Resistance and diode Continuity Frequency measuring terminal 7 In common terminal Capacitance Temperature HFE Frequency measuring terminal 8 Power switch Power on off 9 Backligh...

Page 8: ...erminal and red lead into mA terminal Max 200mA or red lead into 10A terminal Max 10A 2 Tern the knob to the DCA Range then connect the test leads into the tested circuit in series the tested current...

Page 9: ...measuring 10A note it will affect the accuracy of measurement and damage the instrument to continuously measure large current to make the circuit heat 6 Resistance Measurement 1 Insert the black lead...

Page 10: ...reading on LCD will gradually approach zero please ignore it it doesn t affect the accuracy of measurement 5 When severe creepage or capacitor breakdown measured at large capacitance range LCD will di...

Page 11: ...han 70 20 the buzzer inside sounds 10 Temperature Measurement When measuring Temperature input the negative pole of the thermocouple sensor into COM terminal and positive pole into mA terminal connect...

Page 12: ...do not use the strong solvent like the abrasive cleaner and alcohol etc 4 Take out the battery if not use the instrument for a long time to prevent the battery leaking and the liquid to corrode the i...

Page 13: ...lace battery symbol appearance Replace battery No current input Replace fuse Error value Replace battery 1 The user manual is subject to change without notice 2 The contents in the user s manual are c...

Page 14: ...MT 1270 3 1 2 26mm LCD A D 1 IEC1010 2 36V 36V 25V 3 4 5 6 7 8 13...

Page 15: ...2 1 3 A D 1 4 3 1 5 1 1 1 6 1 7 0 40 80 1 8 9V NEDA1604 6F22 1 9 182 x 90 x 46 1 10 320 g 9V 1 11 CATIII 2 2 1 a 23 5 75 2 2 2 3 1 DCV 200mV 100uV 2V 1mV 20V 10mV 200V 0 5 3d 100mV 1000V 0 8 10d 1V 1...

Page 16: ...0mV 750V 1 2 10d 1V 10M 1000V 20V 40 200 Hz 200V 750V 40 100 Hz 2 3 3 DCA 2mA 1uA 20mA 0 8 10d 10uA 200mA 1 2 8d 100uA 10A 2 0 5d 10mA 200mV 10A 10 0 2A 250V 10A 250V 2 3 4 ACA 20mA 1 0 15d 10uA 200mA...

Page 17: ...V 40 200 Hz 2 3 5 200 0 8 5d 0 1 2k 1 20k 10 200k 100 2M 0 8 3d 1k 20M 1 0 25d 10k 200M 5 0 30d 100k 0 7V 250V 200 2 3 6 C 36V 2nF 2 5 20d 1 pF 20nF 2 5 20d 10pF 200nF 2 5 20d 100pF 2uF 2 5 20d 1nF 20...

Page 18: ...2 3 7 freq 20kHz 3 0 18d 10Hz 1V 250V 15 2 3 8 20 400 1 0 5d 1 400 1000 1 5 15d 1 K 2 3 9 1mA 3V 70 20 3V 250V 2 3 10 hFE hFE NPN PNP 0 1000 10uA Vce 3V 17...

Page 19: ...1 2 HOLD Hold Hold 3 4 200mA 5 10A 6 7 8 POWER 9 10 LED 1 COM V Hz 2 DCV 1 2 1 1 COM V Hz 2 ACV 18...

Page 20: ...19 1 2 1 1 COM mA 200mA 10A 10A 2 DCA 1 2 1 3 200mA 10A 10A 1 COM mA 200mA 10A 10A 2 ACA 1 2 1 3 200mA 10A 10A...

Page 21: ...20 1 COM V Hz 2 1 1 1M 2 3 1 mA COM 2 1 2 1 3 4 5 6 1uF 1000nF 1nF 1000pF...

Page 22: ...1 COM V Hz 2 1 10Vrms 2 3 4 250V 1 COM V Hz 2 3 70 20 COM mA hFE 1 hFE 2 COM mA 3 NPN PNP 15 POWER 21...

Page 23: ...1 2 3 4 4 1 9V LCD 4 1 1 4 1 2 9V 9V 4 1 3 22...

Page 24: ...23...

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