1. Introducció
The Tekpower TP107+ is a digital True-RMS automotive multimeter designed for precise electrical and automotive measurements. It features a 6,000-count LCD display with backlight and offers a wide range of functions including DC/AC voltage, current, resistance, temperature, capacitance, 12V battery testing, RPM, pulse width, and dwell angle measurements. This manual provides essential information for the safe and effective operation of your device.
2. Informació de seguretat
Always adhere to basic safety precautions when using this multimeter to prevent personal injury or damage to the device or equipment under test. Improper use can result in electric shock or fire.
- Llegeix el manual: Familiarize yourself with the operation and safety instructions before use.
- Inspeccionar abans d'utilitzar: Check the multimeter and test leads for any damage before each use. Do not use if damaged.
- Voltage Límits: No supereu els valors d'entrada màxims especificats per a cada funció.
- Proper Function Selection: Ensure the rotary switch is set to the correct function and range before making measurements.
- Circuits en directe: Exercise extreme caution when working with live circuits. Avoid contact with bare wires or terminals.
- Protecció de fusibles: The device features dual fused protection. Replace fuses only with specified types and ratings.
- Substitució de la bateria: Canvieu les piles immediatament quan aparegui l'indicador de bateria baixa per garantir lectures precises.
- Condicions ambientals: Use the multimeter in dry conditions. Avoid use in high humidity or explosive environments.
3. Producte acabatview
The Tekpower TP107+ multimeter features a robust design with a clear LCD display and intuitive controls.

Figura 3.1: Frontal view of the Tekpower TP107+ Digital True-RMS Automotive Multimeter, showing the display, rotary switch, and input jacks.
3.1. Components
- Pantalla LCD: 6,000-count, backlit display for clear readings.
- Interruptor rotatiu: S'utilitza per seleccionar funcions i rangs de mesura.
- Botons de funció: Include SEL/VFC, ΔMAX/MIN, HOLD/⌂ for additional features.
- Preses d'entrada: Dedicated jacks for various measurements (VΩHz, mAμA, 20A, COM).
- Suport de peu: Integrated kickstand for convenient hands-free operation.

Figura 3.2: posterior view of the multimeter with the kickstand extended, providing an angled display for easier viewing.
4. Configuració
4.1. Instal·lació de la bateria
The TP107+ requires two AAA batteries (included). To install or replace batteries:
- Assegureu-vos que el multímetre estigui apagat.
- Localitzeu el compartiment de la bateria a la part posterior de la unitat.
- Feu servir un tornavís per obrir la tapa del compartiment de la bateria.
- Introduïu dues piles AAA, observant la polaritat correcta (+/-) tal com s'indica a l'interior del compartiment.
- Substituïu la tapa del compartiment de la bateria i fixeu-la amb el cargol.
4.2. Connexió dels cables de prova
Proper connection of test leads is crucial for accurate and safe measurements. The multimeter includes test leads and a thermo probe.

Figure 4.1: The TP107+ multimeter shown with its included test leads and thermo probe, ready for connection.
- Connecteu el negre cable de prova per a la COM Presa d'entrada (comuna).
- Per a la majoria de volumstage, resistance, frequency, capacitance, and temperature measurements, connect the vermell cable de prova per a la VΩHz presa d'entrada.
- Per a mesures de corrent de fins a 600 mA, connecteu el vermell cable de prova per a la mAμA presa d'entrada.
- For high current measurements up to 20A, connect the vermell cable de prova per a la 20A presa d'entrada.
- For temperature measurements, connect the thermo probe to the appropriate input jacks as indicated in the manual.
5. Instruccions de funcionament
Turn the rotary switch to the desired function. The display will show the measurement. Use the 'SEL/VFC' button to switch between sub-functions if available (e.g., AC/DC, VFC).
5.1. DC Voltage Measurement (V⌂)
Connect the red lead to VΩHz and the black lead to COM. Set the rotary switch to the V⌂ range. The multimeter measures DC voltage from 600mV to 1000V.
5.2. AC VoltagMesura de e (V∼)
Connect the red lead to VΩHz and the black lead to COM. Set the rotary switch to the V∼ range. The multimeter measures AC voltage from 6V to 1000V at 40-400Hz. This is a True-RMS measurement.
5.3. VFC Function (Voltage Frequency Converter)
A AC Voltage mode, press the 'SEL/VFC' button to activate the VFC function. This function is useful for measuring AC voltage in variable frequency drive (VFD) circuits, filtering out PWM frequency to accurately measure RMS voltage into a motor.
5.4. DC Current Measurement (A⌂, mA⌂, μA⌂)
Connect the red lead to mAμA or 20A (depending on expected current) and the black lead to COM. Set the rotary switch to the appropriate A⌂ range. Measures DC current from 6mA to 20A.
5.5. Mesura de corrent altern (A∼, mA∼, μA∼)
Connect the red lead to mAμA or 20A and the black lead to COM. Set the rotary switch to the appropriate A∼ range. Measures AC current from 6mA to 20A.
5.6. Mesura de resistència (Ω)
Connect the red lead to VΩHz and the black lead to COM. Set the rotary switch to the Ω range. Measures resistance from 600Ω to 60MΩ.
5.7. Mesura de temperatura (°C/°F)
Connect the thermo probe to the designated input jacks. Set the rotary switch to the temperature function. Measures temperature from -40 to 1000°C or -40 to 1832°F.
5.8. Mesura de la capacitança (F)
Connect the red lead to VΩHz and the black lead to COM. Set the rotary switch to the capacitance function. Measures capacitance from 6nF to 100mF.
5.9. 12V Battery Test
Set the rotary switch to the 12V battery test function. Connect the leads to the 12V battery terminals. The multimeter applies a built-in 240 ohm load to test the battery under load conditions.
5.10. Tachometer (RPM)
Set the rotary switch to the RPM function. Select 2-stroke or 4-stroke engine type. Connect the appropriate lead for RPM measurement. Measures RPM from 300-19,999 (2-stroke) or 600-19,999 (4-stroke).
5.11. Dwell Angle Measurement
Set the rotary switch to the Dwell function. Select the number of cylinders (1, 2, 3, 4, 5, 6, or 8). Connect the appropriate lead for dwell angle measurement.
5.12. Mesura de l'amplada del pols
Set the rotary switch to the Pulse Width function. Measures pulse width from 0 to 999.9 ms.
5.13. Duty Cycle Measurement
Set the rotary switch to the Duty Cycle function. Measures duty cycle from 10% to 90%.
5.14. Prova de díodes
Set the rotary switch to the Diode Test function. Connect the leads across the diode. The display shows the forward voltage gota.
5.15. Prova de continuïtat
Set the rotary switch to the Continuity Test function. Connect the leads across the circuit. An audible tone indicates continuity.
5.16. Característiques especials
- Manual Range Control: Manually select the measurement range for precision.
- Back-lit LCD Display: Press the backlight button for improved visibility in low-light conditions.
- Max/Min Measurement: Press the ΔMAX/MIN button to record maximum and minimum readings.
- Conservació de dades: Press the HOLD/⌂ button to freeze the current reading on the display.
- Apagat automàtic: The multimeter automatically powers off after a period of inactivity to conserve battery life.
- Indicador de bateria baixa: An icon on the display indicates when batteries need replacement.
- Over Range "1" Display: Indicates that the measured value exceeds the selected range.
6. Manteniment
6.1. Neteja
Netegeu el cas amb l'anunciamp cloth and mild detergent. Do not use abrasives or solvents. Ensure the device is dry before use.
6.2. Substitució de fusibles
The TP107+ features dual fused protection. If the current measurement function fails, the fuse may need replacement. Refer to the internal diagram for fuse specifications and replacement procedures. Always replace with fuses of the identical type and rating.
7. Solució De Problemes
- Sense pantalla/Pantalla tènue: Comproveu la instal·lació de la bateria i el nivell de càrrega. Canvieu les bateries si cal.
- Lectures incorrectes: Ensure test leads are correctly connected to the appropriate input jacks. Verify the rotary switch is set to the correct function and range for the measurement. Check for damaged test leads.
- La mesura actual no funciona: Check the fuse. Replace if blown.
- RPM Function Issues: Ensure proper connection to the ignition system and correct cylinder/stroke settings are selected. Verify the signal source is strong and stable.
- Pantalla "OL": Indicates an over-range condition. Select a higher range or verify the circuit is not open.
8. Especificacions
| Mesurament | Interval/Precisió |
|---|---|
| DC Voltage | 600mV, 6V ±0.5%; 60V, 600V, 1000V ±0.7% (Impedance: 10 MΩ) |
| Vol. ACtage | 6V ±1.0%; 60V, 600V ±0.8%; 1000V ±1.0% (40-400Hz, Impedance: 10 MΩ) |
| VFC | 1000V ±2.0% (40-200Hz, Impedance: 10 MΩ) |
| Corrent DC | 6mA ±0.8%; 60mA, 600mA ±1.2%; 20A ±2.0% |
| Corrent alterna | 6mA ±1.0%; 60mA, 600mA ±2.0%; 20A ±3.0% |
| Resistència | 600Ω, 6KΩ, 60KΩ, 600KΩ ±0.8%; 60MΩ ±2.0% |
| Temperatura | -40 to 100°C ±1%, 100-1000°C ±2% | -40 to 212°F ±1.5%, 212-1832°F ±2.5% |
| Capacitat | 6nF, 60nF, 600nF ±4%; 6μF, 60μF, 600μF ±3%; 6mF ±5%; 60mF, 100mF ±10% |
| Prova de bateria de 12 V | ±2.5% (with built-in 240Ω load) |
| Tacòmetre (RPM) | 2/4 stroke selectable, 300-19,999 RPM (2STR), 600-19,999 RPM (4STR) ±3.0% |
| Angle de residència | 1, 2, 3, 4, 5, 6, 8 cylinders selectable ±3.0% |
| Amplada del pols | 0-999.9 ms ±2.6% |
| Cicle de treball | 10%-90% ±1.5% |
| Prova de díode | Sí |
| Prova de continuïtat | Yes (with audible indicator) |
| Dimensions | 179 x 88 x 39 mm (7.2 x 3.46 x 2.2 polzades) |
| Pes | 380 grams (12.28 unces) |
| Bateries | 2 piles AAA (incloses) |
9. Què hi ha a la caixa
Upon unpacking your Tekpower TP107+ multimeter, you should find the following items:
- TP107+ Automotive Multimeter
- Cables de prova (un vermell, un negre)
- Sonda tèrmica
- AAA Batteries (2, pre-installed)
- Manual d'usuari (aquest document)
10. Garantia i Suport
The Tekpower TP107+ comes with a 1-year USA manufacturer's warranty. For technical support, warranty service, or any inquiries, please contact Tekpower directly. Tekpower maintains a corporate headquarters in the greater Los Angeles area and offers a toll-free hotline for bi-lingual (English/Spanish) technical support and warranty service.
Please refer to the official Tekpower weblloc web o l'embalatge per obtenir la informació de contacte més actualitzada.
