RIGOL DHO814 Digital Oscilloscope User Manual

1. Introduction

This manual provides detailed instructions for the safe and efficient operation of your RIGOL DHO814 Digital Oscilloscope. The DHO814 is a high-performance, ultra-portable 100 MHz, 4-channel digital oscilloscope featuring a 12-bit resolution, 1.25 GSa/s sample rate, and a 7-inch HD touchscreen. It is designed for various applications including on-site testing, circuit debugging, embedded system development, and laboratory education.

The RIGOL DHO814 Digital Oscilloscope in operation, showcasing its ability to display complex waveforms with high clarity on its 7-inch HD screen.

2. Safety Information

To ensure safe operation and prevent damage to the instrument, please observe the following safety precautions:

• Always operate the oscilloscope within its specified voltage and current limits.
• Do not open the device casing. Refer all servicing to qualified personnel.
• Ensure proper grounding to prevent electric shock.
• Avoid exposing the device to moisture, rain, or extreme temperatures.
• Use only the power adapter and accessories supplied or approved by RIGOL.
• Disconnect power before cleaning the instrument. Use a soft, dry cloth.

3. Setup

3.1 Package Contents

Before beginning, verify that all items are present in the package:

• 1 x RIGOL DHO814 Main Unit
• 1 x EU Power Adapter
• 1 x USB A-B Cable
• 1 x Ground Wire
• 4 x Passive Probes (150 MHz)
• 1 x Warranty Card
• 1 x Calibration Certificate
• 1 x Declaration of Conformity

A comprehensive view of the items included in the RIGOL DHO814 box, ensuring users can verify all components upon unboxing. This includes the oscilloscope, probes, power supply, and essential cables.

3.2 Powering On

1. Connect the supplied power adapter to the oscilloscope's power input port.
2. Plug the power adapter into a suitable AC power outlet.
3. Alternatively, the DHO814 supports power via a USB Type-C power bank for portable operation. Connect a compatible power bank to the USB-C port.
4. Press the power button located on the front panel to turn on the device.

3.3 Connecting Probes

Connect the passive probes to the BNC input channels (1, 2, 3, 4) on the front panel. Ensure the probe's ground clip is securely connected to the circuit's ground reference.

This image displays the front panel of the DHO814 oscilloscope, highlighting its large touchscreen interface, dedicated control knobs for vertical and horizontal adjustments, and the four BNC input channels.

The rear panel of the DHO814 features various connectivity options such as LAN for network integration, USB ports for data transfer, an HDMI output for external display, and a USB-C port for power input, supporting power bank operation.

4. Operating the Oscilloscope

4.1 Basic Controls and Interface

The DHO814 features a 7-inch HD touchscreen for intuitive navigation and control. Physical knobs and buttons are also provided for quick adjustments of vertical scale, horizontal time base, trigger level, and other common functions.

4.2 Waveform Acquisition

To acquire a waveform:

1. Connect your signal source to an input channel using a probe.
2. Adjust the vertical scale (Volts/Div) and horizontal time base (Sec/Div) using the dedicated knobs or touchscreen controls to display the waveform appropriately.
3. Set the trigger mode and level to stabilize the waveform. Use the 'Auto' button for automatic trigger setup or manually adjust the trigger level.
4. The 12-bit vertical resolution provides 16 times more detail than traditional 8-bit oscilloscopes, allowing for precise capture of subtle signal variations.

This visual illustrates the superior detail provided by the DHO814's 12-bit vertical resolution compared to standard 8-bit oscilloscopes, allowing for more precise capture of subtle signal variations.

4.3 Measurement Functions

The DHO814 integrates several measurement tools:

• Automatic Measurements: Access a wide range of automatic measurements for parameters like frequency, period, peak-to-peak voltage, RMS, etc.
• Digital Multimeter (DMM): A built-in 3-digit DMM for basic voltage and current measurements.
• Frequency Counter: Provides accurate frequency readings.
• FFT Analysis: Perform Fast Fourier Transform (FFT) to analyze the frequency components of your signals.

4.4 Protocol Decoding

The oscilloscope supports decoding of various serial protocols, including RS232/UART, I2C, SPI, and CAN. This feature is particularly useful for debugging embedded systems and automotive applications.

4.5 Connectivity and Remote Control

The DHO814 is equipped with USB, LAN, and HDMI ports. It runs on an Android operating system, enabling remote control via a PC. It supports customized development through SCPI commands and is compatible with LabVIEW, Visual Basic, and Visual C++.

5. Maintenance

Proper maintenance ensures the longevity and accuracy of your oscilloscope:

• Cleaning: Keep the device clean and free from dust. Use a soft, dry cloth for cleaning the exterior. Do not use abrasive cleaners, solvents, or harsh chemicals.
• Storage: Store the oscilloscope in a cool, dry environment, away from direct sunlight and extreme temperatures.
• Probe Care: Handle probes carefully. Avoid bending or stressing the cables. Replace damaged probes immediately.

6. Troubleshooting

If you encounter issues with your DHO814, refer to the following common troubleshooting steps:

• Device Does Not Power On: Ensure the power adapter is correctly connected to both the oscilloscope and a functional power outlet. If using a power bank, verify it is charged and compatible.
• No Waveform Display: Check that probes are securely connected to the input channels and the signal source. Verify the vertical scale and horizontal time base settings are appropriate for the input signal. Adjust the trigger level or use the 'Auto' trigger function.
• Unstable Waveform: Adjust the trigger source, mode, and level. Ensure the trigger point is stable.
• Incorrect Measurements: Verify probe attenuation settings match the physical probe (e.g., 1X, 10X). Ensure the measurement parameters are correctly selected.

For further assistance, please contact RIGOL technical support.

7. Specifications

Key technical specifications for the RIGOL DHO814 Digital Oscilloscope:

An illustration detailing the compact dimensions (26.53 x 7.74 x 16.17 cm) and light weight (1.78 kg) of the DHO814, emphasizing its suitability for portable applications.

8. Warranty and Support

The RIGOL DHO814 Digital Oscilloscope comes with a 3-year warranty, ensuring peace of mind for your investment. RIGOL also provides 24/7 technical support to assist you with any questions or issues you may encounter during the use of your instrument.

For warranty claims or technical assistance, please contact RIGOL EU or refer to the contact information provided with your product documentation.