99 Washington Street Melrose, MA 02176
Phone 781-665-1400 Toll Free 1-800-517-8431
MT-1217
3-3/4 Autorange Digital Multimeter
s Manual
User’
1st Edition, 2013
©2013 Copyright by Prokit’s Industries Co., Ltd.
Contents
General-------------------------------------------------------------------------1
Open-Package Inspection-------------------------------------------------2
Safety Note -------------------------------------------------------------------2
Instrument Panel& Button Function Description----------------------5
Other Functions---------------------------------------------------------------6
Property-------------------------------------------------------------------------6
Instrument Maintenance---------------------------------------------------16
Fault Elimination-------------------------------------------------------------17
General
This product is equipped with the LCD display of text height
20mm, is a 3 3/4 digital multimeter which has the merits of clear
reading, stable performance and high reliability. It can be used to
measure DC voltage, AC voltage, DC current, AC current,
resistance, capacity, frequency/duty cycle, diode and make
on-and-off test. Meanwhile, it is available for unit symbol display,
automatic/manual range switching, automatic power off and
alarm function. The multimeter has high resolution and precision,
due to its complete functions, high measurement accuracy and
convenient operation,
troubleshooting
ideal for general electrical testing and
1
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.
Digital multimeter 1 PC
User’s manual 1 copy
Test leads 1 pair
Temperature Probe (K-Thermocouple) 1 PC
Test socket 1 pc
Safety Note
The design of this meter is accordance with IEC1010 clause (the
safety standard issued by International Electro technical
Commission). Prior to the operation of the instrument, please
read the safety considerations before use.
1. When DC voltage above 30V, AC voltage above 25V, current
above 10mA, AC power line with inductive load or power line
during electric fluctuation is measured, please beware of
electric shock.
2. Prior to measurement, check if the measurement function
switch is at the correct position. Check if the test lead is
contacted reliably, connected correctly, and grounded well
and etc. in order to avoid electric shock.
3. Only if the meter is used with the matched test lead, will it
can of the test lead is damaged, it is necessary to replace
with another one of the same model or the same electrical
specification.
4. Don’t use other unconfirmed or disapproved fuse to replace
the fuse inside the meter. Only the same model or same
specification fuse can be replaced. Before the replacement,
the test leads must be removed from the measuring point to
ensure there is no longer any signal at the input terminal.
2
5. Don’t use other unconfirmed or disapproved battery to
replace the battery inside the meter. Only the same model or
same electrical specification battery can be replaced. Before
the replacement, the test lead must be removed from the
measuring point to ensure there is no longer any signal at the
input terminal.
6. When the electrical measurement is made, never let your
body get in touch with the ground directly, and don’t touch
uncovered metal terminal, output port, lead clamp and etc.
where earth potential may exist. Dry clothes, rubber shoes,
rubber cushion and other insulating material are usually used
to keep your body insulated against the ground.
7. Don’t store and use it in the high-temperature, high-humidity,
inflammable and strong magnetic field environment.
8. It may damage to the meter and endanger the operator’s
safety if the voltage value beyond the permitted ultimate
voltage value is measured. The ultimate voltage value
permitted for measurement is marked on the instrument
panel, and never measure the value exceeding the standard.
Don’t input the ultimate value out of regulation in order to
avoid electric shock and the damage to the meter.
9. When the test lead is inserted into the current 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 necessary,
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 display. Please be
sure to disconnect the line of the test lead with the measured
object first and ensure there is no any input signal. It is
forbidden to switch the function/range selection switch during
measurement
3
12. When “ ” is shown on LCD display, please replace
battery immediately to ensure the measurement precision.
13. It is not allowed to insert the test lead into the current
terminal to measure voltage!
14. Please don’t change the circuits of the meter freely for fear
that the meter is damaged and the safety be endangered.
15. Description of Safety Symbols
Warming!
Double
Insulation
Fuse
Low
Battery
Instrument Panel & Function Button Description
1. Instrument model number
2. LCD Display: Display the measured data and unit.
3. Function Button
3.1 Hz/% (Freq
Cycle): Press this button to
select the frequency or duty
cycle mode. The measurement
mode of Vo
duty cycle could be selected by
pressing this button in AC
voltage setting
3.2 RANGE: Press this button to
select the voltage/current test
range
uency / Duty
ltage / frequency /
In accordance with the
instruction of European
DCV
ACV
DCA
ACA
Trade Union
4
3.3 HOLD: date hold
3.4 REL △(Relative Value Measurement): The relative value
measurement of Capacity function could be conducted by
pressing this button
3.5 Select(Function Switch): Press this button, the function
could switch between resistance, capacity and
AC/DC current。
3.6 LCD backlight button
4. Knob Switch: It could be used to change the measurement
function and range.
5. Input Terminals
5.1. 10A “+”input terminal.
5.2. mA “+” input, Temperature “+” Input, Capacity and HFE
input terminal
5.3. Voltage, Diode, Resistance, Frequency, Buzzer Input
terminal
5.4. COM: Current, Voltage, Diode, Resistance, Capacity,
Frequency, Buzzer, Temperature “-”, HFE, Input terminal.
Other Functions
Auto Power off
During measurement, the meter will automatically shut down
(enter sleeping mode) to save power if function buttons and knob
switch are not operated in 15 minutes. In auto power off mode,
press any function buttons or rotate the knob switch, the
instrument will get into the auto power on mode (working mode)
Property
General Feature
1-1 Display: LCD
1-2 Max Display: 3999(3 3/4) counts automatic polarity display
and unit display
5
；
1-3 Measuring Method: Dual integral A/D converter
1-4 Sampling Rage: Approx. 3 times / sec.
1-5 Over Range Indication: Display “OL”
1-6 Low Battery Indication: “
1-7 Operation Environment: (0~40)˚C Relative Humidity:<80%
1-8 Storage Environment: (0~50)˚C Relative Humidity:<80%
1-9 Power: a 9V battery (NEDA1604/6F22 or equivalent)
1-10Dimension (size): 182×90×46mm
1-11 Weight: Approx. 320g (not including 9V battery)
1-12 Accessories: User’s Manual (1 pc), color box (1 pc), 10A test
leads (1 pair), K-Thermocouple(1 pc) , test
socket (1 pc).
Technical Feature
2-1. Accuracy: ± (a% × reading + digits),at (23±5)˚C, relative
Humidity <75%. One year calibration guarantee since the
time dispatched from the factory.
2-2. Technical Specification
2-2-1. DCV
A) Turn the knob switch to “
B) The initiate state of the meter is in automatic range status,
which shows “AUTO” symbol
C) Make the test lead contacted to the testing point. The voltage
and polarity of the point where the red pen is contacted will be
displayed on the screen.
” symbol appears;
“ Range
Caution:
1. Don’t measure voltage over 1000V. Otherwise, there is a
danger of meter being damaged.
2. When measuring high voltage, special attention should be
given to personal safety and avoid your body getting in touch
with high voltage circuit.
6
Range Accuracy Resolution
400mV 100uV
4V 1mV
40V 10mV
400V
1000V ±(1.0%+6d) 1V
Input Impedance: 10MΩ .
Overload Protection: 1000V DC or AC peak value
2-2-2. ACV
A) Insert black test lead into the hole of “COM” and red test lead
“
into “
B) Rotate function switch to “
the meter is in automatic range status, which shows “AUTO”
symbol
C) press “Range” button can select the AC measurement range
D) Make the test lead contacted to the testing point. The voltage
of the point where the red test lead is contacted will be
displayed on the screen.
Caution:
1. Don’t measure voltages over 750V, otherwise, the meter will
be damaged.
2. When measuring high voltage, special attention should be
given to personal safety and avoid your body getting in touch
with high voltage circuit.
Range Accuracy Resolution
4V 1mV
40V 10mV
400V
750V ±(1.0%+10d) 1V
±(0.5%+4d)
100mV
“ setting , the initial state of
±(0.8%+10d)
100mV
7
Input Impedance: 10MΩ .
Overload Protection: 1000V DC or 750 AC peak value.
Frequency Response: (50~200) Hz
Display: Average value response (RMS of sine wave).
2-2-3. DCA
A) Insert the black test lead into the “COM” input terminal and
red test lead into the “mA “ input terminal. (Max 400mA), or
“10A “input terminal (Max 10A).
B) Rotate function switch to Current setting. The initial state of
the meter is in automatic range status, which shows “DC”
symbol. Then connect the test lead to the tested circuit in
serial, the tested current value and the current polarity of the
point where the red pen is contacted will be displayed on the
screen simultaneously.
Caution:
1. If “OL” is displayed on LCD, it indicates the tested current
value has exceeded the present range limit, please select
higher range to complete the measurement.
2. The Max input value is 400mA or 10A. (Depending on the
terminal where the red test lead is contacted)
Range Accuracy Resolution
400uA 0.1uA
4000uA 1uA
40 mA 10uA
400mA
4A ±(1.2%+10d) 10mA
10A ±(1.2%+10d) 10mA
Max measurement voltage drop: Full Range mA is 0.4V, A is
100mV;
Max input current: 10A (less than 15 seconds);
Overload Protection: 0.4A/250V resettable fuse, 10A/250V
fuse.
±(1.0%+10d)
100uA
8
2-2-4. ACA
A) Insert the black test lead into the “COM” input terminal and
red test lead into the “mA “input terminal. (Max 400mA), or
“10A” input terminal (Max 10A).
B) Rotate function switch to Current setting. Press “SELECT”
button to select the AC measurement mode. Then connect
the test lead to the tested circuit in serial, the tested current
value and the current polarity of the point where the red test
lead is contacted will be displayed on the screen
simultaneously.
Caution:
1. If “OL” is displayed on LCD, it indicates the tested current value
has exceeded the present range limit, please select higher
range to complete the measurement.
2. The Max input value is 400mA or 10A. (Depending on the
terminal where the red test lead is contacted) The overrated
current will lead to fuse melt or even damage the meter.
Range Accuracy Resolution
400uA 0.1uA
4000uA 1uA
40mA 10uA
400mA
4A ±(2.0%+15d) 10mA
10A ±(2.5%+15d) 10mA
Max measurement voltage drop: Full Range mA is 0.4V, A is
100mV; Max input current: 10A (less than 15 seconds);
Overload Protection: 0.4A/250V restorable fuse, 10A/250V
fuse; Frequency Response: 10A Range (50~200)Hz.
±(1.5%+10d)
100uA
9
2-2-5. Resistance (Ω)
A) Insert the black test lead into “COM” terminal and red test
lead into “
B) Rotate the Range to “Ω” setting. the initial state of the meter
is in automatic range status, which shows “AUTO” symbol
C) Connect the two test leads to the tested resistor.
D) When measuring the low resistance, please short-circuit the
test leads at first to test the wire resistance, and then deduct
it from the actual resistance.
Caution:
1. If “OL” is displayed on LCD, it indicates the tested resistance
value has exceeded the present range limit, please select
higher range to complete the measurement. When measuring
the Resistor higher than 1MΩ, the instrument will take several
seconds to make the reading stable. It is normal when
measuring the high resistor.
2. When the input terminal is open circuit, it will display “OL”.
3. When measuring in-line resistor, be sure that the power is off
and all capacitors are discharged completely.
Range Accuracy Resolution
400Ω ±(0.8%+5d) 0.1Ω
4kΩ 1Ω
40kΩ 10Ω
400kΩ 100Ω
4MΩ
40MΩ ±(1.2%+10d) 10kΩ
• Open Voltage circuit: Less than 200mV;
• Overload Protection: 250V DC or AC Peak Value;
Note: When measuring at Range 400Ω, please short-circuit the
test leads at first to test the wire resistance, and then deduct
it from the actual resistance.
“terminal.
±(0.8%+4d)
1kΩ
10
WARNING: DO NOT input any voltage at resistance range
for safety!
2-2-6.Diode and Continuity Test
A) Insert the black test lead to “COM” terminal and the red test
lead to “
B) Rotate the Range to “
to select the Diode measurement mode.
C) Forward Measurement: Connect the red test lead to the
diode positive polarity and the black test lead to the diode
negative polarity. The approximate value of diode forward
voltage drop will show on the display.
4. Backward Measurement: Connect the red test lead to the
diode negative polarity and the black test lead to the diode
positive polarity. “OL” symbol will be displayed on the
screen.
5. The complete diode testing includes forward and backward
measurement, if the result does not meet the above; it
means the diode is bad.
6. Press “SELECT” button to select the Continuity
measurement mode.
7. Connect the test leads to two points of the tested circuit. If
the built-in buzzer sounds, the resistance between the two
points is less than 50Ω.
Range
” terminal. (The polarity of red test lead is“+”).
“setting. Press “SELECT” button
Display Test Condition
Forward Voltage
Drop of Diode
Buzzer makes
a long sound if
resistance is less
than 50Ω
Forward DC Current is
Approx. 0.5mA, Backward
Voltage is Approx. 1.5V
Open circuit voltage is
Approx. 0.5V
11
• Overload Protection: 250V DC or AC Peak Value.
WARNING: DO NOT input any voltage at this range for
safety!
2-2-7. Capacity (F)
A) Rotate function switch to “
B) Or rotate the Range to “Ω“setting. Press “SELECT” button to
select the capacity measurement mode.
C) Insert the black test lead to “COM” terminal and red test lead
to “mA“ terminal;
D) Connect the tested capacity by the test leads to “COM”, “mA
“ input terminal, the screen will show capacitance parameter.
(The relative value measurement could be conducted by
pressing “REL” button.)
Caution:
1. Fully discharge the tested capacitor in case it damages the
meter.
2. When measuring in-line capacitor, the power should be turned
off and all capacitors should be discharged completely.
3. It takes about 30 seconds to input stable reading at 200uF
Range.
Range Accuracy Resolution
40nF ±(5.0%+30d) 10pF
400nF ±(3.5%+8d) 100pF
4μF ±(3.5%+8d) 1nF
20μF ±(3.5%+8d) 10nF
WARNING: DO NOT input any voltage at this range for
“setting.
safety!
12
2-2-8. Frequency (Hz)
A) Test volt frequency, connect test leads and shielded cable
respectively to “COM” terminal and “
B) Rotate function switch to “
and the cable to the signal source or the tested load. The
tested signal will show on the screen.
Caution:
1. When inputting AC RMS over 10V, it could show reading, but
excess vibration may appear.
2. It is recommended to test weak signals by shielded cable
under noisy circumstances.
3. Select ACV gear when testing the frequency of high voltage.
Then press “Hz/%” button to enter frequency measurement
status.
4. Don’t input voltage of over 250V DC or AC peak value in case
it damages the meter.
Range Accuracy Resolution
400Hz 0.1Hz
4kHz 1Hz
20kHz
0.1-99.9% For your reference 0.1V
• Input Sensitivity: >0.7V RMS
• Overload Protection: 250V DC or AC Peak Value.
±(0.5%+4d)
“ gear. Connect test leads
” terminal.
10Hz
2-2-9. Temperature (˚C)
A) Rotate function switch to (˚C) gear.
B) Insert the cathode (black pin) of cold end (free end) of
thermocouple into “COM” jack and anode into “mA” terminal.
Then put the working end (temperature measurement end)
of thermocouple on the surface or inside the object to be
tested. Then you can read temperature from the screen, and
the data is in Centigrade.
13
Caution:
1. When the input terminal is open-circuit, it will display the “OL”
symbol on the screen.
2. Don’t change the temperature probe at random, or the value
accuracy could not be guaranteed.
3. Don’t measure voltage at temperature range.
Range Accuracy Resolution
(-20~1000)˚C <400˚C±(1.0%+5d)
1˚C
≥400˚C±(1.5%+15d)
• Sensor: K Type Thermocouple (Nickel-chromium--nickel
silicon) (banana plug).
WARNING: DO NOT input any voltage at this range for
safety!
2-2-10. Triode hFE test
A) Turn the knob switch to “HFE“Range
B) Insert the test accessory into “COM” and “mA” terminal.
C)Verify the type of the transistor is NPN or PNP, insert the
emitter, basic and collector to the proper jack on test accessory.
Range Displaying value Test condition
hFE NPN or PNP 0~1000 Basic current is
approx.10uA,Vce
is approx.3V
WARNING: DO NOT input any voltage at this range for
safety!
14
Instrument Maintenance
This is a precision instrument and the user shall not modify the
electric circuit as well.
1. Keep the instrument away from water, dust and shock.
2. Do not store and operate the meter under the condition of high
temperature, high humidity, combustible, explosive and strong
magnetic place.
3. Wipe the case with a damp cloth and detergent; do not use
abrasives and alcohol.
4. If the instrument is not operated for a long time, please take
out the battery to avoid leakage.
5. Pay attention to the status of the 9v battery. When the LCD
displays a flashing “
Battery changes steps as below:
5-1. Loosen the screw on the back cover that secures the battery
case and remove the battery case.
5-2. Remove the 9V battery and replace them with new one.
Although a 9V battery of any standard can be used, but in
order to lengthen the operation life, alkaline battery should
be used.
5-3. Mount the battery case back and tighten the screw.
Precaution:
1. Don’t input voltage higher than DC 1000V or AC Peak Value.
2. Don’t measure voltage at current, resistance, diode and buzzer
range.
3. Don’t use the instrument when the battery has not been
mounted properly or the back cover ahs not been tightened.
4. Prior to the replacement of battery or fuse, please remove the
test leads from the measuring point and switch off the meter.
”symbol, the battery shall be replaced.
15
Fault Elimination
If the instrument could not work properly, please try the following
tips to solve some general problems. If the problems still exist,
please contact the maintenance center or the distributor.
Fault
No Display
symbol appearance Replace battery.
No current input Replace fuse
Error value Replace battery
This Instruction is subjected to change 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 shall not be held liable for any accidents and
hazards resulted from the mal-operations by the user.
The function elaborated by this Instruction shall not be taken
as the reasons for using the product for special purposes.
Solution
Turn on power.
Or Replace battery
16
目 錄
一.概述----------------------------------------------------------------------------------------18
二.開箱檢查---------------------------------------------------------------------------------18
三.安全注意事項---------------------------------------------------------------------------19
四.儀錶面板及按鍵功能說明-----------------------------------------------------------20
五.其他功能--------------------------------------------------------------------------------- 21
六.特性--------------------------------------------------------------------------------------- 21
七.儀錶保養--------------------------------------------------------------------------------- 29
八.故障排除--------------------------------------------------------------------------------- 30
一、概述
MT-1217 是一款性能穩定、高可靠性 3 3/4 位元數字多用錶。儀錶採用 20mm
字高 LCD 顯示器，讀數清晰。
可用來測量直流電壓、交流電壓、直流電流、交流電流、電阻、溫度、電
容、頻率/占空比、二極體及通斷測試。同時還設計有單位符號顯示、自動
/手動量程轉換、自動斷電及報警功能。該錶功能齊全，測量準確度高，使
用方便，是實驗室、工廠、無線電愛好者及家庭的理想工具。
二、開箱檢查
打開包裝箱取出儀錶，仔細檢查以下附件是否缺少或損壞，
如有缺少或損壞請立即與經銷商聯繫。
● 數字多用錶 一台
● 使用說明書 一本
● 錶棒 一付
● 溫度探頭(K 型熱電偶) 一支
● 測試座(電容/晶體管) 一個
三、安全注意事項
該儀錶在設計上符合 IEC1010 條款（國際電工委員會頒佈的安全標準），在
使用之前，請先閱讀安全注意事項。
1. 在測量直流 36V、交流 25V 以上電壓,測量 10mA 以上電流,測量帶電感
負載的交流電力線;測量電力波動期間的交流電力線時, 謹防電擊。
2. 測量前，檢查測量功能開關是否置於正確的檔位,要檢查錶筆是否可靠
接觸，是否正確連接、是否絕緣良好等，以避免電擊。
3. 儀錶只有和所配備的錶棒一起使用才符合安全標準要求。如錶棒線破
損時,必須更換上同樣型號或者相同電氣規格的錶棒線
4. 不要使用其他未經確認或未認可的保險管來更換儀錶內部的保險。只
能換上同樣型號或相同規格的保險管。更換前,錶棒必須離開被測量點,
確保輸入端無任何信號。
5. 不要使用其他未經確認的電池來更換儀錶內的電池。只能換上同型號
或相同電氣規格的電池。更換前,錶棒必須離開被測量點,確保輸入端無
17
任何信號。
6. 在進行電氣測量時,身體切勿直接接觸大地,不要接觸可能存在地電勢
裸露的金屬端子、輸出口、引線夾等。通常使用乾燥的衣服、膠鞋、
膠墊以及其他絕緣材料,保持你的身體與大地絕緣。
7. 不要在高溫、高濕、易燃、易爆和強磁場環境中存放及使用。
8. 測量超過儀錶所允許的極限電壓值有可能損壞儀錶和危及操作人員
的安全。在儀錶面板上標有儀錶所允許測量的極限電壓值切勿測量超
過此標準的安全,請勿輸入超過規定的極限值，以防電擊和損壞儀錶。
9. 當錶棒線插入電流插座時切勿測量任何電壓以免損壞儀錶和危及操
作人員的安全。
10. 不要嘗試校準或維修儀錶。的確有需要時必須有專門培訓或認可的有
資格專業人員才能進行。
11. 在測量時功能/量程選擇開關必需置於正確的量程檔位,在轉換功能/量
程選擇開關時,請一定要先將錶棒線與被測物件斷開,確保輸入端沒任
何信號輸入。嚴禁在測量進行中轉換功能/量程選擇開關。
12. 當 LCD 顯示“
13. 不允許在電流檔去測量電壓！
14. 請不要隨意改變儀錶線路，以免損壞儀錶和危及安全。
15. 安全符號說明：
低電壓指示
四、儀錶面板及按鍵功能說明
1. 儀錶型號
2. 液晶顯示器：顯示儀錶測量的數值及單位
3. 功能按鍵說明
1. Hz/% (頻率/占空比)：交流電壓位,
3.
觸發此鍵, 可進行頻率／占
空比測量
3.2. Range: 量程選擇, 可手動選擇測
量的範圍以提高測量速度.
＂時,請及時更換電池以確保測量精度。
警告!
雙重絕緣
保險絲
直流電壓
交流電壓
直流電流
交流電流
符合歐洲工
會指令
18
3.3. HOLD︰測量數據保持.
3.4. REL △(相對值測量)：在電容檔
觸發此鍵, 可進行相對值測量模式.
3.5. SELECT: 選擇電阻, 電容, 二極管, 通
斷測量功能及電流檔 DC/AC 切換
3.6. LCD 顯示背光按鍵, 觸發此鍵控制開,
閉背光.
4. 旋鈕開關：用於改變測量功能及量程。
5. 輸入插孔
5.1. 10A“+＂輸入插孔
5.2. mA“+＂電流輸入, 溫度“+＂輸入, 電容輸入以及電晶體輸入插孔
5.3. 電壓、二極體、電阻、頻率、蜂鳴器輸入插座
5.4. COM 公共插孔: 電流、電壓、二極體、電晶體、電阻、電容、頻率、
蜂鳴器、溫度的“-＂輸入插孔
五、其他功能
自動關機
在測量過程中，功能按鍵和撥盤開關在 15 分鐘內均無動作時，儀錶會“自
動關機＂（休眠狀態），以節約電能；在自動關機狀態下，按動功能鍵或是
轉動撥盤開關，儀錶會“自動開機＂（工作模式）
六、特性
1.一般特性
1-1. 顯示方式：液晶顯示
1-2. 最大顯示：3999（3 3/4 位元）自動極性和單位顯示
1-3. 測量方式：雙積分式 A/D 轉換
1-4. 轉換速率：約每秒 3 次
1-5. 過量程顯示：顯示“OL＂
1-6. 低電壓顯示：“
1-7. 工作環境：（0~40）℃，相對濕度＜80%
1-8. 相對溫度：（0~50）℃，相對濕度＜80%
1-9. 電源：一隻 9V 電池（NEDA1604/6F22 或同等型號）
1-10. 體積（尺寸）：182×90×46mm （長×寬×高）
1-11. 重量：約 320 g（不包括 9V 電池）；
1-12. 附件：說明書一本，10A 錶棒一付，K 型熱電偶一支, 測試座一個.
2.技術特性
2-1. 準確度:±(a%×讀數＋字數)，保證準確度環境溫度:(23±5)°C，相
對濕度＜75%，校準保證期從出廠日起為一年。
2-2. 性能
＂符號出現；
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功能 有/無
直流電壓 DCV 有
交流電壓 ACV 有
直流電流 DCA 有
交流電流 ACA 有
電阻 Ω 有
電容 CAP 有
頻率 Hz 有
二極體/通斷 有
溫度 °C 有
2-3-1.直流電壓(DCV)
A). 將旋鈕開關轉至“
B). 儀錶初始為自動量程狀態，顯示“AUTO＂符號
C.) 將測試錶棒接觸測試點，紅錶棒所接的該點電壓與極性顯示在螢幕
上。
注意：
1. 測量電壓切勿超過 1000V，超過則有損壞儀錶電路的危險。
2. 當測量高電壓電路時，千萬注意避免人體觸及高壓電路，注意人身安全。
量程 準確度 分辨力
400mV 100uV
4V 1mV
40V 10mV
400V
1000V ±(1.0%+6d) 1V
‧輸入阻抗：10MΩ
‧超載保護：1000V 直流或交流峰值。
2-3-2.交流電壓(ACV)
1.將黑錶棒插入“COM＂插孔，紅錶棒插入“
2.將旋鈕開關轉至“
3.按動“SELECT＂鍵選擇可手動選擇測量量程.
4.將測試錶棒接觸測試點，紅錶棒接的該點電壓顯示在螢幕上。
注意：
1. 測量電壓切勿超過 750V，如超過，有損壞儀錶電路的危險。
2. 當測量高電壓電路時，千萬注意避免人體觸及高壓電路，注意人身安全。
＂檔
±(0.5%+4d)
100mV
＂插孔；
＂檔，初始為自動量程狀態，顯示“AUTO＂符號
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量程 準確度 分辨力
4V 1mV
40V 10mV
400V
750V ±(1.0%+10d) 1V
‧輸入阻抗：10MΩ。
‧超載保護：1000V 直流或 750V 交流峰值；
‧頻率回應：(50~200)Hz
‧顯 示：平均值響應（以正弦波有效值校準）。
2-3-3.直流電流(DCA)
A) 將黑錶棒插入“COM＂插孔，紅錶棒插入“mA＂插孔（最大為
400mA），或插入“10A＂插孔中（最大為 10A）
B) 將旋鈕開關轉至電流檔，儀錶初始為自動量程狀態，顯示“DC＂符
號，然後將儀錶的錶棒串入被測電路中，被測電流值及紅色錶棒點的
電流極性將同時顯示在螢幕上。
注意：
1. 如 LCD 顯示“OL＂，表明已超過量程範圍，需將量程開關轉至較高
一檔。
2. 最大輸入電流為 400mA 或者 10A（視紅錶棒插入位置而定），超過額
定的電流會將保險絲熔斷，甚至損壞儀錶。
量程 準確度 分辨力
400uA 0.1uA
4000uA 1uA
40mA 10uA
400mA
4A ±(1.2%+10d) 10mA
10A ±(1.2%+10d) 10mA
‧最大測量壓降：滿量程 mA 為 0.4V，A 為 100mV；
‧最大輸入電流：10A（不超過 15 秒）；
‧超載保護：0.4A/250V 自恢復保險絲，10A/250V 保險管。
2-3-4.交流電流(ACA)
1. 將黑錶棒插入“COM＂插孔，紅錶棒插入“mA＂插孔（最大為
400mA），或插入“10A＂插孔中（最大為 10A）；
2. 將旋鈕開關轉至電流檔，按動“SELECT＂鍵選擇 AC 測量方式，然後
將儀錶的錶棒串入被測電路中，被測電流值及紅色錶棒點的電流極性
將同時顯示在螢幕上。
±(0.8%+6d)
100mV
±(1.0%+10d)
100uA
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注意：
1. 如 LCD 顯示“OL＂，表明已超過量程範圍，需將量程開關轉至較高
一檔。
2. 最大輸入電流為 400mA 或者 10A（視紅錶棒插入位置而定），超過額
定的電流會將保險絲熔斷，甚至損壞儀錶。
量程 準確度 分辨力
400uA 0.1uA
4000uA 1uA
40mA 10uA
400mA
4A ±(2.0%+15d) 10mA
10A ±(2.5%+15d) 10mA
‧最大測量壓降：滿量程 mA 為 0.4V，A 為 100mV；
‧最大輸入電流：10A（不超過 15 秒）。
‧超載保護：0.4A/250V 自恢復保險絲，10A/250V 保險管。
‧頻率回應：10A 量程為(50~200)Hz。
2-3-5.電阻(Ω)
1. 將黑錶棒插入“COM＂插孔，紅錶棒插入“
A) 將旋鈕開關轉至“Ω＂檔，兩錶棒跨接在被測電阻上。
B) 如果測量阻值小的電阻，應先將錶棒短路，測得引線電阻，然後在
實測中減去。
注意：
1. 如 LCD 顯示“OL＂，表明已超過量程範圍，需將旋鈕開關轉至較高
一檔，當測量電阻超過 1MΩ 以上時，讀數幾秒之後才能穩定，這在
測量高阻時是正常的。
2. 當輸入端開路時，則顯示“OL＂。
3. 測量線上電阻時，要確認被測電路所有電源已關閉及所有電容都已完
全放電，才可進行。
量程 準確度 分辨力
400Ω ±(0.8%+5d) 0.1Ω
4kΩ 1Ω
40kΩ 10Ω
400kΩ 100Ω
4MΩ
40MΩ ±(1.2%+10d) 10kΩ
‧開路電壓：小於 200mV；
±(1.5%+10d)
100uA
＂插孔；
±(0.8%+4d)
1kΩ
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‧超載保護：250V 直流或交流峰值；
‧注意事項：在使用 400Ω 量程時，應先將錶棒短路，測得引線電阻，
然後在實測中減去
警告：為了安全在此量程禁止輸入電壓值！
2-3-6.二極體及通斷測試
A) 將黑錶棒插入“COM＂插孔，紅錶棒入“
性為“+＂極）。
B) 將旋鈕開關轉至““Ω＂檔，按動“SELECT＂鍵選擇二極體測量方式
C) 正向測量：將紅錶棒接到被測二極體的正極，黑錶棒接到被測二極體
的負極，顯示器即顯示二極體正向壓降的近似值。
D) 反向測量：將紅錶棒接到被測二極體的負極，黑錶棒接到被測二極體
的正極，顯示器顯示“OL＂字樣。
E) 完整的二極體測試包括正反向測量，如果測試結果與上述不符，說明
二極體是壞的。
F) 按動“SELECT＂鍵選擇通斷測量方式。
G) 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 50Ω，則內置蜂鳴器發聲。
量程 顯示值 測試條件
二極體正向壓降 正向直流電流 0.5mA 反向電壓約 1.5V
蜂鳴器發聲長響，測
試兩點阻值約 50Ω
‧超載保護：250V 直流或交流峰值；
警告：為了安全在此量程禁止輸入電壓值！
2-3-7.電容(F)
1. 將旋鈕開關轉至“
2. 或將檔位設置在““Ω＂檔，按動“SELECT＂鍵選擇電容測量方式.
3. 將黑錶棒插入“COM＂插孔，紅錶棒插入“mA＂ 插孔；
4. 用測試錶棒（注意紅錶棒極性為正極）將被測電容接入“COM〞和
“mA＂輸入端，螢幕將顯示電容容量。(按動“REL＂鍵可進行相對
值測量)
注意：
1. 對被測電容應完全放電，以防止損壞儀錶；
2. 測量線上電容時，需將線路電源關斷，並將電容充分放電；
3.
量程 準確度 分辨力
40nF ±(5.0%+30d) 10pF
程輸入讀數穩定時間約 30 秒。
200uF 量
開路電壓約 0.5V
＂檔；
＂插孔（注意紅錶棒極
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400nF ±(3.5%+8d) 100pF
4μF ±(3.5%+8d) 1nF
20μF ±(3.5%+8d) 10nF
警告：為了安全在此量程禁止輸入電壓值！
2-3-8.頻率(Hz)
1. 測試電壓頻率時，將錶棒或遮罩電纜接入“COM＂和“
2. 將旋鈕開關轉至“
上，被測信號的頻率顯示在螢幕上。
注意：
1. 輸入超過 10V 交流有效值時，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屏壁電纜；
3. 測量高電壓的頻率時，請選擇 ACV 檔，再按 Hz/%按鍵進入頻率測量
狀態
4. 禁止輸入超過 250V 直流或交流峰值的電壓，以免損壞儀錶。
程量 準確度 分辨力
400Hz 0.1Hz
4kHz 1Hz
20kHz
0.1-99.9% 僅供參考 0.1V
‧ 輸入靈敏度：>0.7V 有效值，
‧ 超載保護：250V 直流或交流峰值。
2-3-9.溫度(°C)
1. 將旋鈕開關轉至“℃＂檔.
2. 將熱電偶感測器的冷端（自由端）負極（黑色插頭）插入“COM＂插
孔，正極插入“mA＂插孔中，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。
注意：
1. 當輸入端開路時，則顯示常溫。
2. 請勿隨意更換測溫感測器，否則將不能保證測量準確度。
3. 嚴禁在溫度檔測量電壓。
量程 準確度 分辨力
(-20~1000)°C <400°C±(1.0%+5d)
感測器：K 型熱電偶（鎳鉻—鎳硅）香蕉插頭。
警 告：為了安全在此量程禁止輸入電壓值！
2-3-10.晶體三極管 hFE 參數測試
＂檔，將錶棒或電纜跨接在信號源或被測負載
±(0.5%+10d)
10Hz
400°C±(1.5%+15d)
≥
1°C
＂輸入端；
24
1. 將功旋鈕開關轉至HFE 檔位.
2. 將附件晶體管測試座插入 COM＂和“mA＂插孔中
3. 依據待測試的晶體管型號, 將各引腳插入對應的測試孔, 屏幕顯示相應
的測量數值。
量程 顯示值 測試條件
hFE NPN 或 PNP 0~1000 基礎電流約 10uA, Vce 約為 3V
警 告：為了安全在此量程禁止輸入電壓值！
七、儀錶保養
該儀錶是一台精密儀器，使用者不要隨意更改電路。
1. 請注意防水、防塵、防摔
2. 不宜在高溫高濕、易燃易爆和強磁場的環境下存放、使用儀錶
3. 請使用濕布和溫和的清潔劑清潔儀錶外表，不要使用研磨劑及酒精等
烈性溶劑
4. 如果長時間不使用，應取出電池，防止電池漏液腐蝕儀錶
5. 注意 9V 電池使用情況，當螢幕顯示出“
步驟如下：
5-1. 卸下固定電池盒的螺絲，取出電池盒
5-2. 取出 9V 電池，換上一個新的電池，雖然任何標準 9V 電池都可使用，
但為加長使用時間，最好使用鹼性電池
5-3. 裝回電池盒，鎖緊螺絲。
注意：
1. 不要將 1000V 直流或交流峰值電壓接入
2. 不要在電流檔、電阻檔、二極體檔和蜂鳴器檔上，測量電壓值
3. 在電池沒有裝好或後蓋沒有上緊時，請不要使用此錶
4. 在更換電池或保險絲前，請將測試錶棒測試點移開，並關機。
八、故障排除
如果您的儀錶不能正常工作，下面的方法可以幫助您快速解決一般問題。
如果故障仍排除不了，請與維修中心或經銷商聯繫。
故障現象 檢 查 部 位 及 方 法
沒顯示 電源未接通，或更換電池
符號出現 更換電池
顯示誤差大 更換電池
本說明書如有改變，恕不另行通知
本說明書的內容被認為是正確的，若用戶發現有錯誤、遺漏等，請與
生產廠家聯繫
本公司不承擔由於用戶錯誤操作所引起的事故和危害
本說明書所講述的功能，不作為將產品用做特殊用途的理由。
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＂符號時，應更換電池，
中國地區產品保固卡
購買日期
公司名稱
聯絡電話
電子郵箱
聯絡地址
產品型號 MT-1217-C
※ 在正常使
消耗品）。
※ 產品保固卡需蓋上店章、日期章，其保固效力始生效。
※ 本卡請妥善保存，如需維修服務時，請出示本卡以為證明。
※ 保固期滿後，屬調整、保養或是維修性質之服務，則酌收檢修工時費
用。若有零件需更換，則零件費另計。
產品保固說明
保固期限內，如有下列情況者，維修中心則得酌收材料成本或修理費(由
本公司維修人員判定)：
‧ 對產品表面的損傷，包括外殼裂縫或刮痕
‧ 因誤用、疏忽、不當安裝或測試，未經授權打開產品修理，修改
‧ 因事故、火災、電力變化、其他危害，或自然災難所造成的損害。
非服務保證內容：
‧ 機件本體外之消耗品：如電池...等消耗品
‧ 機件本體之外之附配件：如耳機麥克風，電源供應器，記憶卡，
超過保證期限之檢修或服務,雖未更換零件，將依公司保固維修政策酌
收服務費。
服務電話: 0755 83692415 / 83692986 /83246594 / 83247554
服務傳真: 0755 83692143
用情況下，自原購買日起 12 個月免費維修保證（不含耗材、
產品或者任何其他超出預期使用範圍的原因所造成的損害
CD 等附配件。
店章
26
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Phone 781-665-1400 Toll Free 1-800-517-8431
©2013 Prokit’s Industries Co., LTD. All rights reserved 2013001(T)
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