Mastech MS8268 Digital Multimeter

1. Ifihan

This manual provides comprehensive instructions for the safe and effective operation of the Mastech MS8268 Digital AC/DC Auto/Manual Range Digital Multimeter. The MS8268 is a versatile instrument designed for precise electrical measurements, featuring a large LCD display, auto/manual ranging, and various measurement functions. Please read this manual thoroughly before use and retain it for future reference.

2. Alaye Aabo

Always adhere to safety precautions when using the multimeter to prevent personal injury or damage to the device. This meter complies with IEC1010-1, CAT. III 600V & CAT. II 1000V safety standards.

• Má ṣe kọjá iye ìtẹ̀síwájú tó pọ̀ jùlọ fún gbogbo ìwọ̀n.
• Ṣọra pupọ nigbati o ba n ṣiṣẹ pẹlu voltages loke 30V AC RMS, 42V tente oke, tabi 60V DC. Awọn wọnyi ni voltages duro a mọnamọna ewu.
• Rí i dájú pé a yan iṣẹ́ àti ìwọ̀n tó yẹ kí a tó ṣe àwọn ìwọ̀n.
• Máa yọ àwọn ìtọ́wò ìdánwò kúrò nínú àyíká náà kí o tó yí àwọn iṣẹ́ tàbí àwọn ìlà padà.
• The meter features full overload protection and a built-in resettable fuse for mA and uA ranges. The 10A range is protected by a F 10A/250V 6.3x32mm fuse.
• A misconnection alarm system and red lights indicate correct terminal usage, enhancing safety.
• Má ṣe lo mita náà bí ó bá dàbí pé ó ti bàjẹ́ tàbí tí àpótí náà bá ṣí sílẹ̀.
• Rọpo awọn batiri lẹsẹkẹsẹ nigbati ifihan batiri kekere ba han lati rii daju pe o peye awọn kika.

3. Ọja Ipariview

3.1. Irinše ati idari

The Mastech MS8268 Digital Multimeter features a robust design with intuitive controls for various measurement tasks.

olusin 1: Iwaju view of the Mastech MS8268 Digital Multimeter, showing the LCD display, rotary dial, and function buttons.

3.2. Ifihan Awọn ẹya ara ẹrọ

• 3 3/4 Digital Large LCD: Provides a clear reading with 4000 counts.
• Imọlẹ ẹhin: Illuminates the display for visibility in low-light conditions. Activates by pressing the 'LIGHT' button.
• Unit Symbol Display: Shows the appropriate unit (e.g., V, A, Ω, Hz, F) for the selected measurement.
• Itọkasi Batiri Kekere: An icon appears when battery power is low, indicating the need for replacement.

3.3. Awọn iṣẹ Iṣakoso

• Ipe ipe Rotari: Used to select the desired measurement function (e.g., DCV, ACV, Resistance, Current, Capacitance, Frequency, Diode, Continuity, hFE).
• Bọtini RANGE: Toggles between auto-ranging and manual ranging modes.
• Bọtini Yan: Used to switch between different measurement types within a single rotary dial position (e.g., AC/DC, Continuity/Diode, Frequency/Duty Cycle).
• Bọtini Dimu: Didi kika lọwọlọwọ lori ifihan. Tẹ lẹẹkansi lati tu silẹ.
• Bọtini Imọlẹ: Ó mú kí ìmọ́lẹ̀ ìbòjú ìfihàn ṣiṣẹ́.
• Bọtini REL: Activates the relative value measurement function.

4. Eto

4.1. Fifi sori batiri

The multimeter requires three (3) 1.5V AAA batteries for operation. These are typically included.

1. Rii daju pe multimeter ti wa ni pipa.
2. Wa ideri iyẹwu batiri ni ẹhin ẹyọ naa.
3. Tú àwọn skru tí ó wà ní ìpamọ́ náà kí o sì yọ ìbòrí náà kúrò.
4. Insert the three AAA batteries, observing the correct polarity (+ and -) as indicated inside the compartment.
5. Rọpo ideri batiri naa ki o si fi skru(s) so o mọ.

olusin 2: Ẹyìn view of the Mastech MS8268, showing the battery compartment with three AAA batteries installed.

4.2. Nsopọ Awọn itọsọna Igbeyewo

Proper connection of test leads is crucial for accurate and safe measurements. The meter features red lights to indicate correct terminal usage.

1. Fi okun idanwo dudu sinu apoti titẹ sii 'COM' (Common).
2. Fun voltage, resistance, capacitance, frequency, diode, and continuity measurements, insert the red test lead into the 'VΩHz' input jack.
3. For current measurements (mA/uA), insert the red test lead into the 'mAΩA' input jack.
4. For high current measurements (10A), insert the red test lead into the '10A' input jack.
5. Ensure the leads are fully seated in the jacks.

Figure 3: The Mastech MS8268 Multimeter shown with its included test leads and multi-function socket.

5. Awọn ilana Iṣiṣẹ

The MS8268 offers both auto and manual ranging capabilities. In auto-ranging mode, the meter automatically selects the best range for the measurement. In manual mode, you can select the range using the 'RANGE' button.

5.1. DC VoltagÌwọ̀n e (V–)

• Turn the rotary dial to the 'V–' position.
• So okun idanwo pupa naa pọ mọ apa rere (+) ti iyipo naa ati okun idanwo dudu naa pọ mọ apa odi (-).
• Ka voltage iye lori ifihan.

5.2. AC VoltagÌwọ̀n e (V∼)

• Turn the rotary dial to the 'V∼' position.
• So awọn itọsọna idanwo kọja AC voltage orisun.
• Ka voltage iye lori ifihan.

5.3. Ìwọ̀n Àìfaradà (Ω)

• Turn the rotary dial to the 'Ω' position.
• Rii daju pe iyika naa ti ni agbara ṣaaju idiwọn resistance.
• So awọn itọsọna idanwo kọja paati lati ṣe iwọn.
• Ka iye resistance lori ifihan.

5.4. DC Current Measurement (A–)

• Turn the rotary dial to the appropriate 'A–' range (uA, mA, or 10A).
• Connect the meter in series with the circuit. Ensure the red lead is in the correct current input jack (mA/uA or 10A).
• Ka iye lọwọlọwọ lori ifihan naa.

5.5. AC Current Measurement (A∼)

• Turn the rotary dial to the appropriate 'A∼' range (uA, mA, or 10A).
• Connect the meter in series with the circuit. Ensure the red lead is in the correct current input jack (mA/uA or 10A).
• Ka iye lọwọlọwọ lori ifihan naa.

5.6. Ìwọ̀n Agbára (F)

• Turn the rotary dial to the 'F' position.
• Discharge the capacitor before measurement.
• So awọn itọsọna idanwo kọja kapasito.
• Ka iye kapasito lori ifihan.

5.7. Wíwọ̀n Ìgbohùngbà (Hz)

• Turn the rotary dial to the 'Hz/%' position.
• So awọn itọsọna idanwo kọja orisun ifihan.
• Read the frequency value on the display. Press 'SELECT' to toggle to Duty Cycle if needed.

5.8. Transistor hFE Measurement

• Turn the rotary dial to the 'hFE' position.
• Insert the transistor leads into the appropriate holes on the multi-function socket (NPN or PNP).
• Ka iye hFE lori ifihan naa.

5.9. Continuity Test (♫)

• Turn the rotary dial to the '♫/Diode' position.
• Press the 'SELECT' button until the continuity symbol (♫) appears.
• Connect the test leads across the circuit or component. An audible tone indicates continuity (resistance below approx. 50Ω).

5.10. Diode Test (▲)

• Turn the rotary dial to the '♫/Diode' position.
• Press the 'SELECT' button until the diode symbol (▲) appears.
• So okun pupa mọ anode ati okun dudu mọ katode ti diode naa.
• Ka siwaju voltagìṣàlẹ̀ lórí ìbòjú. Yí ​​àwọn ìtọ́sọ́nà padà láti ṣàyẹ̀wò fún ìṣàlẹ̀ ṣíṣí.

5.11. Relative Value Measurement (REL)

• Perform a measurement.
• Press the 'REL' button. The current reading becomes the reference value, and subsequent readings will be displayed as the difference from this reference.
• Press 'REL' again to exit relative mode.

5.12. Dá Dátà dúró (DÁTÍ)

• Lakoko wiwọn eyikeyi, tẹ bọtini 'HOLD' lati di kika lọwọlọwọ lori ifihan.
• Tẹ 'HOLD' lẹẹkansi lati tusilẹ kika ati bẹrẹ wiwọn laaye.

5.13. Agbara Aifọwọyi

The meter features a 'Sleep mode' and will automatically power off after approximately 15 minutes of inactivity to conserve battery life. Press any button or turn the rotary dial to wake the meter.

6. Itọju

6.1. Ninu

Pa ọran naa pẹlu ipolowoamp Aṣọ àti ọṣẹ ìfọṣọ díẹ̀. Má ṣe lo àwọn ohun ìfọṣọ tàbí àwọn ohun tí ó ń yọ́ omi. Jẹ́ kí àwọn ohun èlò ìfọṣọ náà wà ní ìpamọ́ kúrò nínú ẹ̀gbin àti ọrinrin.

6.2. Batiri Rirọpo

When the low battery indicator appears on the display, replace the three (3) 1.5V AAA batteries as described in Section 4.1. Prompt battery replacement ensures accurate readings and proper meter function.

6.3. Rirọpo fiusi

If the current measurement function fails, the fuse may need replacement. The mA and uA ranges are protected by a resettable fuse. The 10A range is protected by a F 10A/250V 6.3x32mm fuse.

1. Rí i dájú pé a ti pa multimeter náà àti pé a ti ge àwọn èdìdì ìdánwò náà kúrò.
2. Ṣí ideri yàrá batiri náà gẹ́gẹ́ bí a ti ṣàlàyé rẹ̀ ní Apá 4.1.
3. Locate the fuse(s) inside the compartment.
4. Carefully remove the old fuse and replace it with a new fuse of the identical type and rating (F 10A/250V 6.3x32mm for the 10A range).
5. Rọpo ideri batiri ki o rii daju.

7. Laasigbotitusita

• Display shows 'OL' or '1': This indicates an over-range condition or an open circuit. Check if the measured value exceeds the selected range or if the circuit is open.
• Ko si ifihan tabi ifihan ti ko lagbara: Ṣàyẹ̀wò bí a ṣe ń fi bátìrì sí i kí o sì rí i dájú pé bátìrì náà kò ti tán. Rọpò bátìrì tí ó bá pọndandan.
• Awọn kika ti ko pe: Ensure test leads are properly connected and not damaged. Verify the correct function and range are selected. Check battery level.
• Continuity test not beeping: Ensure the 'SELECT' button has been pressed to activate the continuity function (symbol ♫). Check if the circuit resistance is too high.
• Wiwọn lọwọlọwọ ko ṣiṣẹ: Check if the fuse for the current range is blown and replace if necessary (refer to Section 6.3). Ensure the meter is connected in series with the circuit.
• Display fluctuates wildly when leads are not touching anything: This is normal behavior for digital multimeters, especially in voltage or resistance modes, and does not indicate a fault.

8. Awọn pato

9. Atilẹyin ọja ati Onibara Support

For information regarding warranty coverage, technical support, or service, please refer to the Mastech official webaaye tabi kan si olupin agbegbe rẹ. Tọju iwe-ẹri rira rẹ bi ẹri rira.