1. Introducció
The AOPUTTRIVER AP-770HC is a 6000-count True RMS digital multimeter designed for accurate and reliable electrical measurements. It features auto-ranging capabilities and a variety of functions including voltage, current, resistance, capacitance, frequency, temperature, and Non-Contact Voltage (NCV) detection. This manual provides essential information for the safe and proper use of your multimeter.
2. Informació de seguretat
Please read all safety warnings and operating instructions carefully before using this instrument. Failure to comply with safety precautions may result in electric shock, fire, or damage to the meter.
- Always ensure the test leads are properly connected and the function switch is set to the correct range before making any measurements.
- No mesurar el voltage superior a 1000 V DC o 750 V AC.
- Exercise extreme caution when working with live circuits. Avoid contact with bare wires or terminals.
- Never measure current on a circuit with voltage present without first disconnecting power and inserting the meter in series.
- No utilitzeu el mesurador si sembla danyat o si els cables de prova estan compromesos.
- Substituïu la bateria quan aparegui l'indicador de bateria baixa per garantir lectures precises.
- Complir els codis de seguretat locals i nacionals.
3. Contingut del paquet
Verifiqueu que tots els elements que s'enumeren a continuació siguin presents al vostre paquet:
- 1 x AOPUTTRIVER AP-770HC Multimeter
- 2 cables de prova (vermell i negre)
- 1 x bossa de transport
- 1 pila de 9V (6F22)
- 1 tornavís petit
- 1 x sonda de temperatura
- 1 manual d'usuari (anglès)

Image: The package contents, including the multimeter, test leads, carrying bag, battery, screwdriver, temperature probe, and user manual.
4. Producte acabatview
4.1 Disposició del panell frontal
Familiarize yourself with the various components of the multimeter's front panel:

Imatge: Una imatge detallada view of the multimeter's front panel, highlighting key functional areas and buttons.
- NCV Detection Area
- NCV Red Light Indicator
- CDS Sensor (for Auto Backlight)
- NCV Green Light Indicator
- Pantalla LCD
- Tecla RANGE
- Tecla SELECT
- REL▲ Key (Relative Value)
- Clau Hz/Duty
- Tecla HOLD
- Tecla MAX/MIN
- Interruptor rotatiu
- Conector d'entrada 20A
- μA/mA/600AT+ Input Jack
- COM and Temperature "-" Input Jack
- VΩHz Input Jack
4.2 Característiques físiques
The AP-770HC is designed for durability and ease of use:
- Doble protecció: The meter is encased in a protective rubber boot for enhanced durability against drops and impacts.
- Suport integrat: A built-in stand allows the meter to be propped up for hands-free viewing, rotating 180 degrees for optimal angle.
- Mechanical Blocking System: This safety feature prevents incorrect lead insertion by physically blocking unused input jacks based on the rotary switch position.

Image: Illustrations of the multimeter's physical attributes, including its dimensions, protective casing, and battery access.
5. Configuració
5.1 Instal·lació de la bateria
The AP-770HC requires one 9V (6F22) battery for operation. To install or replace the battery:
- Assegureu-vos que el multímetre estigui APAGAT.
- Localitzeu la tapa del compartiment de la bateria a la part posterior del mesurador.
- Use the provided small screwdriver to loosen the screw securing the battery cover.
- Remove the cover and connect the 9V battery to the battery clip, observing correct polarity.
- Col·loqueu la bateria al compartiment i torneu a col·locar la tapa, fixant-la amb el cargol.
6. Instruccions de funcionament
6.1 Funcionament general
To begin using the multimeter:
- Insert the test leads into the appropriate input jacks. The black lead typically connects to the COM jack. The red lead connects to the VΩHz jack for voltage, resistance, and other measurements, or to the μA/mA or 20A jack for current measurements.
- Rotate the function switch to the desired measurement mode. The mechanical blocking system will guide you to the correct input jacks for the selected function.
- The meter will automatically select the appropriate range (auto-ranging). For some functions, you can press the GAMMA button to manually select a range.
6.2 Funcions de mesura
Below are instructions for common measurement types:
DC Voltage Measurement (V∓)
- Set the rotary switch to the V∓ position.
- Connect the red test lead to the VΩHz jack and the black test lead to the COM jack.
- Connect the test leads in parallel across the DC voltage source or component to be measured.
- Llegeix el voltage valor a la pantalla LCD.
Vol. ACtagMesura de e (V∼)
- Set the rotary switch to the V∼ position.
- Connect the red test lead to the VΩHz jack and the black test lead to the COM jack.
- Connect the test leads in parallel across the AC voltagfont o component electrònic.
- Llegeix el voltage valor a la pantalla LCD.
DC/AC Current Measurement (μA, mA, A)
- IMPORTANT: Disconnect power to the circuit before measuring current.
- Set the rotary switch to the appropriate current range (μA, mA, or A). Use the SELECCIONA button to switch between AC and DC current.
- Connect the red test lead to the μA/mA or 20A jack, and the black test lead to the COM jack.
- Connecteu el multímetre en sèrie amb el circuit on es vol mesurar el corrent.
- Apliqueu alimentació al circuit i llegiu el valor del corrent.
Mesura de resistència (Ω)
- Poseu l'interruptor rotatiu a la posició Ω.
- Connect the red test lead to the VΩHz jack and the black test lead to the COM jack.
- Ensure the component to be measured is de-energized.
- Connecteu els cables de prova a través del component.
- Llegiu el valor de la resistència.
Prova de continuïtat
- Set the rotary switch to the continuity/diode position. Press SELECCIONA until the continuity symbol (🔊) is displayed.
- Connect the red test lead to the VΩHz jack and the black test lead to the COM jack.
- Connecteu els cables de prova a través del circuit o component.
- If resistance is below approximately 50Ω, the buzzer will sound, indicating continuity.
Prova de díode
- Set the rotary switch to the continuity/diode position. Press SELECCIONA until the diode symbol (→|∣) is displayed.
- Connect the red test lead to the VΩHz jack and the black test lead to the COM jack.
- Connecteu el cable vermell a l'ànode i el cable negre al càtode del díode.
- La pantalla mostrarà el volum d'avançtagcaiguda de corrent. Invertiu els cables; un circuit obert (OL) indica un bon díode.
Mesura de la capacitat
- Set the rotary switch to the capacitance position.
- Connect the red test lead to the VΩHz jack and the black test lead to the COM jack.
- Assegureu-vos que el condensador estigui completament descarregat abans de la mesura.
- Connecteu els cables de prova a través del condensador.
- Llegiu el valor de la capacitat a la pantalla.
Frequency/Duty Cycle Measurement (Hz/%)
- Set the rotary switch to the Hz/Duty position.
- Connect the red test lead to the VΩHz jack and the black test lead to the COM jack.
- Connecteu els cables de prova a la font de senyal.
- Premeu el botó Hz/Deure button to toggle between frequency and duty cycle measurements.
Temperature Measurement (℃/℉)
- Set the rotary switch to the temperature position.
- Connect the temperature probe to the VΩHz and COM jacks, observing polarity.
- Place the tip of the temperature probe on or near the object whose temperature is to be measured.
- Read the temperature on the display. Press the SELECCIONA botó per canviar entre Celsius (℃) i Fahrenheit (℉).

Image: The multimeter connected to a temperature probe, demonstrating its use to measure the temperature of a liquid.
Vol. Sense contactetage (NCV) Detecció
- Set the rotary switch to the NCV position.
- Move the NCV detection area (top of the meter) close to a live conductor.
- Si voltage greater than 90V (RMS) is detected, the NCV red light will illuminate, and the meter will emit an audible beep.

Image: The multimeter's NCV function in use, detecting voltage near an electrical outlet without physical contact.
6.3 Funcions especials
- Retenció de dades (HOLD): Premeu el botó MANTENIM per congelar la lectura actual a la pantalla. Premeu-la de nou per alliberar-la.
- MÀXIM / MÍN: Premeu el botó MAX/MIN button to record the maximum and minimum values during a measurement session. Press again to cycle through MAX, MIN, and current readings.
- RMS veritable: The AP-770HC features True RMS measurement for accurate readings of non-sinusoidal AC waveforms.
- Apagat automàtic: El mesurador s'apagarà automàticament després d'aproximadament 15 minuts d'inactivitat per estalviar bateria.
- Il·luminació de fons: The display backlight automatically activates in low-light conditions via the CDS sensor.
7. Manteniment
7.1 Neteja
Per netejar el multímetre, netegeu la carcassa amb aiguaamp drap i un detergent suau. No utilitzeu abrasius ni dissolvents. Assegureu-vos que el mesurador estigui completament sec abans d'utilitzar-lo.
7.2 Substitució de la bateria
When the low battery indicator appears on the display, replace the 9V battery as described in Section 5.1. Always use a fresh 9V (6F22) battery.
8. Solució De Problemes
If you encounter issues with your AP-770HC multimeter, refer to the following common problems and solutions:
| Problema | Causa possible | Solució |
|---|---|---|
| Sense pantalla o pantalla tènue | Dead or low battery; Incorrect battery installation | Replace the 9V battery; Ensure correct polarity during installation. |
| Es mostra "OL" (sobrecàrrega) | Measurement exceeds the selected range; Open circuit | Switch to a higher range (if not in auto-ranging); Check for breaks in the circuit or faulty component. |
| Lectures inexactes | Low battery; Incorrect function/range selection; Damaged test leads; External interference | Replace battery; Verify function and range; Inspect and replace test leads if damaged; Move away from strong electromagnetic fields. |
| No hi ha bip de continuïtat | Open circuit; Resistance too high | Check the circuit for breaks; Ensure resistance is below the continuity threshold. |
9. Especificacions
Technical specifications for the AOPUTTRIVER AP-770HC Digital Multimeter:
| Paràmetre | Especificació |
|---|---|
| Mostra | 6000 recomptes |
| Selecció de rang | Rang automàtic |
| DC Voltage | 60mV/600mV/6V/60V/600V ±(0.5%+2dgt) / 1000V ±(0.8%+2dgt) |
| Vol. ACtage | 60mV/600mV/6V/60V/600V ±(1.0%+10dgt) / 750V ±(1.5%+3dgt) |
| Corrent DC | 600μA/6000μA/60mA/600mA ±(1.5%+2dgt); 6A/20A ±(2.5%+5dgt) |
| Corrent alterna | 600μA/6000μA/60mA/600mA ±(1.5%+3dgt); 6A/20A ±(2.5%+5dgt) |
| Resistència | 600Ω~60MΩ |
| Capacitat | 9.999nF~99.99mF |
| Freqüència | 5.12Hz~5.12MHz (0.1%+5dgt) |
| Cicle de treball | 0.1% ~ 99.9% |
| Temperatura | -20 ℃ ~ 1000 ℃ (-4 ℉ ~ 1832 ℉) |
| RMS veritable | Sí |
| Funció NCV | Sí |
| Retenció de dades | Sí |
| MAX/MIN Value | Sí |
| Apagat automàtic | Sí |
| Pantalla de llum de fons | Sí |
| Font d'alimentació | 9V (6F22) Battery |
| Material | ABS |
| Pes de l'article | 1.3 lliures |
| Dimensions | 9 x 5.2 x 2.4 polzades (paquet) |
10. Garantia i Suport
AOPUTTRIVER provides a 2 anys de garantia for the AP-770HC Digital Multimeter, along with lifetime technical support.
If you encounter any issues or have questions regarding your product, please do not hesitate to contact AOPUTTRIVER customer support. We are committed to resolving any problems within 24 hours.
For support, please refer to the contact information provided with your purchase or visit the official AOPUTTRIVER weblloc.