SEEIRIR ET120MPro Portable Digital Oscilloscope and Signal Generator

1. Introdución

The SEEIRIR ET120MPro is a versatile 2-in-1 portable device combining a digital oscilloscope and a signal generator. Designed for electronic maintenance, DIY projects, and automotive diagnostics, it offers a 120MHz bandwidth, 500MS/s sampling rate, and a 3MHz signal source. This manual provides essential information for the safe and effective operation of your device.

2. Información de seguridade

• Always operate the device within its specified voltage e límites de corrente.
• Evite expoñer o dispositivo á humidade, a temperaturas extremas ou á luz solar directa.
• Do not attempt to disassemble or modify the device. Refer servicing to qualified personnel.
• Ensure proper grounding when connecting to circuits, especially high-voltage os.
• Use only the provided or recommended accessories and probes.

3. Produto rematadoview

The ET120MPro features a compact design with a clear display and intuitive controls. It integrates a digital oscilloscope for waveform analysis and a signal generator for outputting various test signals.

Figura 3.1: Fronte view of the ET120MPro device, showing the display and control buttons. The display illustrates an oscilloscope waveform and menus for Sine, Ramp, and Square signal generation with frequency settings.

3.1. Elementos de visualización

• Visualización de forma de onda: Shows the measured electrical signal.
• Parámetros de medición: Displays values like VPP (Peak-to-Peak Voltage), Frequency (F), and other auto-measured data.
• Base de tempo: Indicates the horizontal scale (e.g., 2uS per division).
• Sensibilidade vertical: Indicates the vertical scale (e.g., 500mV per division).
• Trigger Status: Shows trigger mode (e.g., Auto).
• Acoplamento: Indicates AC or DC coupling.
• Atenuación da sonda: Shows 1X or 10X setting.

3.2. Panel de control

• MENÚ: Accede ao menú principal para a configuración.
• F1/F2: Function buttons, context-sensitive.
• GARDAR: Saves the current waveform data.
• AC/DC: Toggles between AC and DC coupling for the input signal.
• 1X/10X: Adjusts probe attenuation setting.
• 50%: Sets the trigger level to 50% of the signal amplititude.
• TRIG: Enters trigger settings menu.
• MODE/OK: Selects modes or confirms selections.
• BORDE: Selects trigger edge (rising/falling).
• AUTOMÁTICO: Enables auto-ranging for oscilloscope settings.
• PARAR: Stops waveform acquisition.
• Frechas de navegación (Arriba/Abaixo/Esquerda/Dereita): Úsase para a navegación por menús e o axuste de parámetros.

4. Configuración

4.1. Acendido/apagado

Press and hold the power button (usually located on the top or side) to turn the device on or off. Ensure the battery is sufficiently charged or connected to a power source.

4.2. Connecting Probes

Connect the oscilloscope probe to the input BNC connector. Ensure the probe's ground clip is securely connected to the circuit's ground reference. For signal generation, connect the output cable to the designated signal output port.

4.3. Initial Calibration (if applicable)

Some probes may require compensation. Connect the probe to the calibration output (if available) and adjust the probe's compensation screw until a stable square wave is displayed.

5. Funcionamento do dispositivo

5.1. Modo de osciloscopio

The device typically defaults to oscilloscope mode upon startup. If not, navigate through the menu to select it.

• Medición automática: Preme o AUTO button for the device to automatically adjust vertical, horizontal, and trigger settings for a stable waveform display. This also provides automatic readings for frequency, voltage (VPP), and duty cycle.
• Adjusting Vertical Sensitivity (Volts/Div): Use the navigation arrows to adjust the vertical scale, changing the voltage represented by each vertical division on the grid.
• Adjusting Time Base (Sec/Div): Use the navigation arrows to adjust the horizontal scale, changing the time represented by each horizontal division.
• Configuración do disparador: Preme TRIG to access trigger options. Use BORDE to select rising or falling edge triggering. Adjust the trigger level using navigation arrows to stabilize the waveform.
• AC/DC Coupling: Preme AC/DC to switch between AC coupling (blocks DC component) and DC coupling (shows full signal including DC offset).
• Atenuación da sonda: Asegurar o 1X/10X setting on the device matches the physical attenuation setting on your probe.
• Gardar formas de onda: Preme o GARDAR button to store the current waveform data.

5.2. Modo xerador de sinal

The ET120MPro can generate various waveforms for testing circuits. Access this mode via the main menu or a dedicated function button (if available).

• Selecting Waveform Type: Use navigation buttons to choose between Sine, Ramp, and Square waveforms as shown in the product overview imaxe.
• Frecuencia de configuración: Adjust the output frequency using the navigation arrows. The device supports frequencies up to 3MHz.
• Configuración Amplitude (VPP): Adjust the peak-to-peak voltage of the output signal.

5.3. Xestión de datos

The device supports USB storage for exporting waveform data. Connect the device to a computer using a USB cable to transfer saved files para unha análise posterior.

6. Mantemento

• Limpeza: Usa un pano suave e seco para limpar o dispositivo. Non empregues produtos de limpeza abrasivos nin solventes.
• Coidado da batería: For optimal battery life, avoid fully discharging the battery frequently. Store the device with a partial charge if not used for extended periods.
• Almacenamento: Garde o dispositivo nun lugar fresco e seco, lonxe da luz solar directa e de temperaturas extremas.

7 Solución de problemas

8. Especificacións

• Ancho de banda: 120 MHz
• Samptaxa de ling: 500 MS/s
• Digital Channels: 1
• Resolución de visualización: 320*240 píxeles
• Signal Source Frequency: Ata 3 MHz
• Peso do artigo: 400 g
• Dimensións: Approximately 1 x 1 x 1 cm (Parcel Dimensions)
• Fabricante: SEEIRIR
• Número de modelo: ET120MPro

9. Garantía e soporte

For warranty information and technical support, please refer to the documentation provided with your purchase or contact SEEIRIR customer service. Keep your proof of purchase for warranty claims.