Tekpower Mastech MS8268 Digital Multimeter User Manual

Introducció

This manual provides detailed instructions for the safe and effective operation of your Tekpower Mastech MS8268 Digital Multimeter. The MS8268 is an auto/manual ranging digital multimeter designed for various electrical measurements. It features a backlit LCD screen and includes sound and light warnings for incorrect test lead connections, enhancing user safety and convenience.

Figure 1: Tekpower Mastech MS8268 Digital Multimeter. This image displays the front view of the multimeter, highlighting its display, function buttons, rotary dial, and input jacks.

Característiques principals:

• Mesures AC/DC Voltage up to 1000V and AC/DC Current up to 10A.
• Measures Resistance up to 40MΩ, Capacitance up to 200µF, and Frequency up to 200KHz.
• Includes Diode Check, Continuity Test, and hFE (transistor) measurement.
• Vol. Sense contactetagDetecció e (NCV) per a una seguretat millorada.
• Automatic and manual ranging capabilities with relative measurement (excluding frequency).
• LED and sound warnings for incorrect test lead jack usage relative to the function switch setting.
• Blue LED backlit LCD display for clear readings in various lighting conditions.
• Automatic power-off function (can be disabled) to conserve battery life.
• All ranges are fused (resettable) for circuit protection.

Informació de seguretat

To ensure safe operation and avoid damage to the meter, please read and follow all safety instructions carefully. This device complies with IEC 1010-1 (61010-1@iec:2001), CAT II 1000V, and CAT III 600V safety standards.

Precaucions generals de seguretat:

• Always ensure the multimeter is set to the correct function and range before making any measurements.
• No apliqueu mai voltage or current that exceeds the maximum specified limits for the selected range.
• Extremeu les precaucions quan treballeu amb circuits en tensió. Alt volumtagpoden ser perillosos.
• No utilitzeu el mesurador si sembla danyat o si els cables de prova estan compromesos.
• Verificar el funcionament del mesurador amb un volum coneguttage or current source before using it for critical measurements.
• Always connect the common (COM) test lead first and disconnect it last when measuring live circuits.
• Mantingueu els dits darrere dels protectors de dits de les sondes de prova durant les mesures.
• Canvieu les piles tan bon punt aparegui l'indicador de bateria baixa per garantir lectures precises.
• No feu funcionar el mesurador en entorns amb gasos, vapors o pols explosius.
• Advertència de la proposta 65: Aquest producte pot contenir productes químics coneguts per l'estat de Califòrnia per causar càncer i defectes de naixement o altres danys reproductius. Rentar-se les mans després de la manipulació.

Producte acabatview

Familiarize yourself with the components of your MS8268 Digital Multimeter before operation.

Figure 2: Labeled diagram of the MS8268 Multimeter. This diagram points out key features including the NCV sensing area, LCD region, function selection buttons, range selection, data hold, backlight, transistor input, rotary switch, and input jacks.

1. NCV Sensing Area: Used for non-contact voltage detecció.
2. LCD Region: Digital display for measurement readings and unit symbols.
3. SEL Measure Function Selection: Button to select sub-functions within a rotary switch position (e.g., AC/DC, Diode/Continuity).
4. RANGE Manual Range Selection Button: Alterna entre la selecció automàtica i la selecció manual.
5. HOLD Data Control: Congela la lectura actual de la pantalla. Premeu de nou per alliberar-la.
6. B/L Backlight Function: Activates the LCD backlight. Press again to turn off.
7. Transistor Input: Socket for hFE (transistor gain) measurements.
8. Gear Swift (Rotary Switch): Selects the primary measurement function (e.g., Voltage, Current, Resistance, NCV, OFF).
9. COM Jack: Common (negative) input terminal for all measurements.
10. VΩHzC Jack: Positive input terminal for Voltage, Mesures de resistència, freqüència, capacitança, díode i continuïtat.
11. Jack mA: Positive input terminal for current measurements up to 600mA.
12. Un Jack: Positive input terminal for current measurements up to 10A.

Figura 3: Detallada view of the multimeter's operational areas. This image provides a closer look at the LCD, function buttons, rotary dial, and the clearly labeled input jacks with their respective current limits and safety ratings.

Configuració

Instal·lació de la bateria:

The MS8268 Multimeter requires three (3) AAA batteries for operation. Batteries are not included with the device.

1. Assegureu-vos que el multímetre estigui APAGAT.
2. Localitzeu el compartiment de la bateria a la part posterior del mesurador.
3. Unscrew the two Philips head screws securing the battery cover.
4. Traieu la tapa de la bateria.
5. Introduïu tres piles AAA, observant la polaritat correcta (+/-) tal com s'indica a l'interior del compartiment.
6. Replace the battery cover and secure it with the screws.

Figura 4: Esquena view of the multimeter, showing the integrated kickstand and the location of the battery compartment cover.

Connexió del cable de prova:

Always connect test leads to the appropriate jacks for the selected measurement function. The meter features an LED/sound warning system to alert you if leads are connected incorrectly.

• Connecteu el cable de prova negre al COM (common) jack for all measurements.
• Per al voltage, Resistance, Frequency, Capacitance, Diode, and Continuity measurements, connect the red test lead to the VΩHzC jack.
• Per a mesures de corrent de fins a 600 mA, connecteu el cable de prova vermell al mA jack.
• For current measurements up to 10A, connect the red test lead to the A jack.

Figure 5: The MS8268 Multimeter shown with its included red and black test leads, ready for connection to the input jacks.

Instruccions de funcionament

This section details how to perform various measurements using your MS8268 Multimeter.

1. Measuring DC/AC Voltage (V):

1. Turn the rotary switch to the "V" position (DC Voltage) or "mV" position (millivolts).
2. Per a AC Voltage, premeu SEL button to toggle between DC and AC modes if necessary. The display will show "AC" or "DC".
3. Connecteu el cable de prova negre al COM jack i el cable de prova vermell al VΩHzC jack.
4. Connecteu les sondes de prova en paral·lel al circuit o component que voleu mesurar.
5. Llegeix el voltagValor a la pantalla LCD.

2. Measuring DC/AC Current (A, mA, µA):

1. Turn the rotary switch to the "A", "mA", or "µA" position depending on the expected current range.
2. For AC Current, press the SEL button to toggle between DC and AC modes if necessary.
3. Connecteu el cable de prova negre al COM jack.
4. Connecteu el cable de prova vermell al mA jack for currents up to 600mA, or to the A jack for currents up to 10A.
5. Precaució: Always connect the meter in series with the circuit. Never connect it in parallel to a voltagla font d'alimentació en mesurar el corrent, ja que això pot fer saltar el fusible o fer malbé el mesurador.
6. Llegiu el valor actual a la pantalla LCD.

3. Mesura de la resistència (Ω):

1. Gireu l'interruptor rotatiu a la posició "Ω".
2. Connecteu el cable de prova negre al COM jack i el cable de prova vermell al VΩHzC jack.
3. Assegureu-vos que el circuit o component estigui desenergitzat abans de mesurar la resistència.
4. Connecteu les sondes de prova a través del component.
5. Llegiu el valor de la resistència a la pantalla LCD.

4. Measuring Capacitance (F):

1. Gireu l'interruptor rotatiu a la posició "F".
2. Connecteu el cable de prova negre al COM jack i el cable de prova vermell al VΩHzC jack.
3. Assegureu-vos que el condensador estigui completament descarregat abans de mesurar per evitar danys al mesurador.
4. Connecteu les sondes de prova a través del condensador.
5. Llegiu el valor de la capacitat a la pantalla LCD.

5. Measuring Frequency (Hz):

1. Gireu l'interruptor rotatiu a la posició "Hz".
2. Connecteu el cable de prova negre al COM jack i el cable de prova vermell al VΩHzC jack.
3. Connecteu les sondes de prova a la font de senyal.
4. Read the frequency value on the LCD.

6. Diode Test and Continuity Check:

1. Turn the rotary switch to the "Diode/Continuity" position (often shared with resistance).
2. Premeu el botó SEL button to toggle between Diode Test and Continuity Check modes.
3. Connecteu el cable de prova negre al COM jack i el cable de prova vermell al VΩHzC jack.
4. For Diode Test: Connecteu la sonda vermella a l'ànode i la sonda negra al càtode del díode. Un voltatge directetage drop will be displayed. Reverse the probes; the display should show "OL" (Open Loop) for a good diode.
5. For Continuity Check: Connect the probes across the circuit or component. If continuity exists (resistance below approximately 50Ω), the meter will emit an audible beep.

7. hFE (Transistor Gain) Measurement:

1. Gireu l'interruptor rotatiu a la posició "hFE".
2. Identify if the transistor is NPN or PNP.
3. Insert the transistor leads (Emitter, Base, Collector) into the corresponding holes in the "Transistor Input" socket (7 on Figure 2).
4. Read the hFE value on the LCD.

8. Vol sense contactetagDetecció de e (NCV):

1. Gireu l'interruptor rotatiu a la posició "NCV".
2. Move the top part of the meter (NCV Sensing Area, 1 on Figure 2) close to the conductor or circuit you want to test for AC voltage.
3. The meter will emit an audible beep and/or display an indication when AC voltage es detecta sense contacte directe.

9. Auto/Manual Ranging:

The meter defaults to auto-ranging. To switch to manual ranging, press the GAMMA button (4 on Figure 2). Each subsequent press will cycle through available manual ranges. To return to auto-ranging, press and hold the GAMMA button or turn the rotary switch to a different function and then back.

10. Data Hold:

Premeu el botó MANTENIM button (5 on Figure 2) to freeze the current reading on the display. Press it again to release the hold function and resume live readings.

11. Retroiluminació:

Premeu el botó B / l button (6 on Figure 2) to activate the blue LED backlight for the LCD. Press it again to turn off the backlight. The backlight may automatically turn off after a short period to conserve battery life.

Manteniment

Substitució de fusibles:

The MS8268 Multimeter is protected by resettable fuses. If the meter fails to measure current, the fuse may need replacement. Always use fuses of the specified type and rating.

• FUSED MAX 10A: For the 10A current range.
• FUSED MAX 600mA: For the mA and µA current ranges.

Per substituir un fusible:

1. Assegureu-vos que el mesurador estigui apagat i que tots els cables de prova estiguin desconnectats.
2. Unscrew the battery cover and remove the batteries.
3. Carefully open the meter casing (refer to the internal diagram if available, or consult a qualified technician).
4. Locate the blown fuse and replace it with a fuse of the identical type and rating.
5. Reassemble the meter, ensuring all screws are tightened.

Neteja:

Netegeu la c del comptadorasing amb anunciamp drap i un detergent suau. No utilitzeu abrasius ni dissolvents. Assegureu-vos que el mesurador estigui completament sec abans d'utilitzar-lo.

Emmagatzematge:

When the meter is not in use for an extended period, remove the batteries to prevent leakage. Store the meter in a cool, dry place, away from direct sunlight and extreme temperatures.

Resolució de problemes

• El mesurador no s'encén: Comproveu la instal·lació de les piles i assegureu-vos que no estiguin esgotades. Substituïu-les si cal.
• Inaccurate or "0000" readings:
  • Ensure test leads are fully seated in the correct input jacks. The meter's warning system should alert you if they are not.
  • Verify the rotary switch is set to the appropriate function and range.
  • For resistance measurements, ensure the circuit is de-energized.
  • If the meter displays "0000" or inconsistent readings, try turning the meter OFF and then ON again to reset it.
  • Check for blown fuses if measuring current.
• No backlight: Press the B/L button. If it still doesn't light, check battery level.
• Auto power-off too soon: The auto power-off feature can be disabled (refer to advanced settings in a full manual if available, or typically by holding a specific button during power-on). The meter will beep before shutting off.

Especificacions

Garantia i Suport

The Tekpower Mastech MS8268 Digital Multimeter comes with a 1 any de garantia des de la data de compra, cobrint defectes de materials i fabricació.

For technical support, warranty claims, or service inquiries, please contact the manufacturer or your point of purchase. Please have your model number (MS8268) and purchase date available when contacting support.

• Marca: Tekpower
• Fabricant: RSR Electronics Inc