Mastech M300 Mini Digital Multimeter User Manual

1. Sarrera

The Mastech M300 is a compact, 13-range mini digital multimeter designed for basic electrical measurements. It is capable of measuring AC/DC voltage up to 500 volts, DC current up to 200 mA, resistance, diode continuity, and features a buzzer for continuity checks. Its attached test leads make it highly portable and convenient for various applications.

2. Segurtasun informazioa

WARNING: To avoid electrical shock, remove input leads before opening the case. To prevent fire, install the fuse with the specified amp/volt ratings.

• Neurketak egin aurretik, ziurtatu beti multimetroa tarte egokian dagoela ezarrita.
• Ez saiatu bolumena neurtzentagZehaztutako gehienezko mugak gainditzen dituzten korronteak edo korronteak.
• Kontu handiz ibili zirkuitu biziekin lan egitean.
• Erabili aurretik, egiaztatu proba-kableak kaltetuta dauden. Ez erabili isolamendua hondatuta badago.
• Never open the multimeter casing unless absolutely necessary for maintenance (e.g., fuse replacement) and ensure it is disconnected from all power sources.
• This device is rated for CAT III 600V.

2.1. Irudia: Atzealdea view of the Mastech M300 multimeter, displaying important safety warnings regarding electrical shock and fuse specifications. The battery compartment is also visible.

3. Produktuaren ezaugarriak

• Neurriak AC/DC Voltage 500V arte.
• Measures DC Current up to 200mA.
• Measures Resistance (0-2MΩ).
• Diode and Continuity Test with Buzzer.
• Energia-kontsumo txikia bateriaren iraupena luzatzeko.
• Overload indication for safety.
• Integrated test leads for convenience.

3.1. irudia: Aurrealdea view of the Mastech M300 Mini Digital Multimeter, showing the LCD display, rotary switch, function buttons, and integrated red and black test leads.

4. Paketearen edukia

Paketea irekitzean, egiaztatu elementu guztiak bertan daudela eta kalterik gabe daudela:

• Mastech M300 Mini Digital Multimeter (with attached test leads)
• SR44 3V Batteries (x2, pre-installed)
• Erabiltzailearen eskuliburua

5. Konfigurazioa

5.1 Bateriaren instalazioa/ordezkapena

The Mastech M300 uses two SR44 3V batteries, which are typically pre-installed. If replacement is needed:

1. Ensure the multimeter is turned OFF and disconnect all test leads from any circuits.
2. Aurkitu bateriaren konpartimentua unitatearen atzealdean (ikusi 2.1 irudia).
3. Ireki arretaz bateriaren konpartimenduaren estalkia.
4. Remove the old batteries and insert new SR44 3V batteries, observing the correct polarity (+/-).
5. Itxi bateriaren konpartimentuaren estalkia modu seguruan.

5.2 Proba-kableak konektatzea

The Mastech M300 features integrated test leads. Ensure they are securely attached to the meter and free from any damage before use.

6. Funtzionamendu-argibideak

Before making any measurement, ensure the multimeter is set to the appropriate function and range. The rotary switch is used to select the desired measurement type.

6.1 DC Vol. neurtzeatage (V–)

1. Ezarri biraketa-etengailua nahi den DC bolumenera.tage range (e.g., 500V, 200V, 20V, 2V, 200mV). Start with the highest range if the voltage ezezaguna da.
2. Konektatu proba-kable gorria zirkuituaren alde positibora (+) eta proba-kable beltza alde negatibora (-).
3. Irakurri liburukiatage balioa LCD pantailan.

6.2 AC Vol. neurtzeatage (V∼)

1. Ezarri biraketa-etengailua nahi den korronte alternoko bolumenera.tage tartea (adibidez, 500V, 200V). Hasi tarterik altuenarekin bolumena badatage ezezaguna da.
2. Konektatu proba-kableak AC bolumenaren artean.tage iturria.
3. Irakurri liburukiatage balioa LCD pantailan.

6.3 Measuring DC Current (A–)

CAUTION: To measure current, the multimeter must be connected in series with the circuit. Never connect the multimeter in parallel across a voltage source when in current mode, as this can damage the meter and the circuit.

1. Set the rotary switch to the desired DC Current range (e.g., 200mA, 20mA, 2mA, 200µA).
2. Break the circuit where you want to measure current.
3. Connect the red test lead to the higher potential side of the break and the black test lead to the lower potential side, completing the circuit through the multimeter.
4. Irakurri uneko balioa LCD pantailan.

6.4 Measuring Resistance (Ω)

CAUTION: Ensure the circuit or component is completely de-energized before measuring resistance. Measuring resistance on a live circuit can damage the multimeter.

1. Set the rotary switch to the desired Resistance range (e.g., 2MΩ, 200kΩ, 20kΩ, 2kΩ, 200Ω).
2. Connect the test leads across the component whose resistance you wish to measure.
3. Irakurri erresistentziaren balioa LCD pantailan.

6.5 Diodoaren proba

1. Set the rotary switch to the Diode symbol (→|–).
2. Connect the red test lead to the anode of the diode and the black test lead to the cathode. The display will show the forward voltage tanta.
3. Alderantzikatu kableak. Diodo ona dagoenean, pantailak 'OL' (Ireki Begizta) erakutsi beharko luke.

6.6 Jarraitasun proba

1. Jarri biraketa-etengailua Jarraitutasun sinboloan (♫).
2. Connect the test leads across the component or wire you wish to test.
3. If there is continuity (low resistance), the buzzer will sound, and the display will show a low resistance value. If there is no continuity, the display will show 'OL'.

7. Mantentzea

7.1 Garbiketa

Multimetroa garbitzeko, garbitu kaxa publizitatearekin.amp cloth and a mild detergent. Do not use abrasives or solvents. Ensure the unit is completely dry before use.

7.2 Fusiblearen ordezkapena

If the current measurement function stops working, the fuse may need replacement. Refer to the safety warnings on the back of the unit for fuse specifications (F 250mA/250V).

1. Ziurtatu multimetroa itzalita dagoela eta deskonektatu proba-kable guztiak.
2. Open the multimeter casing (this typically involves removing screws on the back).
3. Locate the fuse and carefully remove it.
4. Replace with a fuse of the exact same type and rating (F 250mA/250V).
5. Itxi ondo c-aasing.

8. Arazoak

• Pantailarik ez / Pantaila ahula: Check battery charge. Replace batteries if necessary.
• Irakurketa okerrak: Ensure the rotary switch is set to the correct function and range. Verify test lead connections. Ensure the circuit is de-energized for resistance measurements.
• Korronte neurketarik ez: Check the fuse. Replace if blown (refer to Section 7.2).
• 'OL' (Gainezka) pantaila: The measured value exceeds the selected range. Switch to a higher range or verify the circuit.

9. Zehaztapenak

10. Bermea eta Laguntza

This Mastech M300 Mini Digital Multimeter comes with a 1 urteko bermea erosketa-datatik aurrera, fabrikazio-akatsak estaliz. Gorde erosketaren egiaztagiria berme-erreklamazioetarako.

For technical support, warranty service, or inquiries, please contact Mastech customer service through their official webproduktua erosi zen gunea edo dendaria.