1. Introduction
The RIGOL DHO924S is a high-performance digital oscilloscope designed for precise signal analysis and measurement. It features a 250MHz frequency band, 12-bit vertical resolution, and a maximum sample rate of 1.25 GSa/s. Equipped with 4 analog channels and a built-in signal generator, this device is suitable for a wide range of applications in electronics, research, and education. This manual provides essential information for setting up, operating, and maintaining your DHO924S oscilloscope.
Figure 1.1: Front view of the RIGOL DHO924S Digital Oscilloscope, showcasing its display and control panel.
2. Key Features
- Ultra-low background noise: Ensures pure signal capture, even for small signals.
- 12-bit hardware high resolution: Provides enhanced measurement precision across all series.
- 250 MHz analog bandwidth: Supports high-frequency signal analysis.
- 4 analog channels: Allows for simultaneous measurement of multiple signals.
- 16 digital channels (optional): Expands capabilities for mixed-signal analysis.
- Real-time sampling rates up to 1.25 GSa/s: Captures fast transient events accurately.
- Storage depth up to 50 Mpts: Enables capture of long signal sequences.
- Vertical sensitivity range of 200 µV/div to 10 V/div: Accommodates a wide range of signal amplitudes.
- Ultra Acquire mode: Provides up to 1 million wfms/s waveform capture rate for observing infrequent events.
- Gray scale digital real-time brightness function: Enhances waveform visualization on the 256-level display.
- Integrated functions: Includes arbitrary waveform/function generator, Bode plot analysis, histogram, and digital signal analysis.
- Waveform search and navigation: Quickly identifies signal abnormalities.
- 7-inch 1024 x 600 high-definition touch screen: Offers intuitive human-machine interaction.
- New Flex knob: Provides a user-friendly operating experience.
- Standard connectivity: USB Device&Host, LAN, and HDMI ports for versatile connections.
- Online version upgrade function: Ensures the device stays up-to-date.
3. What's in the Box
Upon unpacking your RIGOL DHO924S, please verify that all the following items are present:
- Main Unit (RIGOL DHO924S Digital Oscilloscope)
- Probe x 4 (350MHz)
- Power Cable (Approx. 1.5m long)
- USB Cable (Data cable, 1.5m long)
- Grounding Wire (1.0m long)
- Certificates/Documentation
Figure 3.1: Visual representation of the items included in the RIGOL DHO924S package.
4. Setup
4.1 Power Connection
Connect the provided power cable to the oscilloscope's power input and then to a suitable AC power outlet. The DHO924S also supports Type-C power, allowing for portable operation using a compatible power bank.
Figure 4.1: The DHO924S can be powered via a Type-C connection for portable use.
4.2 Probe Connection
Connect the oscilloscope probes to the BNC input connectors on the front panel. Ensure a secure connection. For accurate measurements, it is crucial to properly compensate the probes using the tool provided in the probe kit.
4.3 Interface Connections
The DHO924S offers various interfaces for connectivity and external display:
- USB Device & Host: For connecting to a computer or external storage devices.
- LAN: For network connectivity and remote control.
- HDMI: For connecting to an external monitor or projector for larger display.
Figure 4.2: The DHO924S features USB, LAN, and HDMI ports for versatile connectivity options.
Figure 4.3: Rear panel of the DHO924S, highlighting the AFG OUT, AUX OUT, LAN, USB DEVICE, HDMI, and USB-C ports.
5. Operating Instructions
5.1 Powering On/Off
Press the power button located on the front panel to turn the oscilloscope on or off. Allow a few moments for the system to boot up completely.
5.2 Navigating the Touchscreen Interface
The DHO924S is equipped with a 7-inch high-definition touchscreen, providing an intuitive interface for controlling the device. You can interact directly with the display for settings, measurements, and waveform manipulation. The new Flex knob also offers an alternative, user-friendly method for adjustments.
Figure 5.1: The 7-inch 1024x600 high-definition touchscreen provides a clear and interactive display.
5.3 Basic Waveform Display and Controls
To quickly display a stable waveform, connect a signal to an input channel and press the AUTO button. This automatically adjusts the vertical and horizontal settings. Use the dedicated vertical (POSITION, SCALE) and horizontal (POSITION, SCALE) controls to fine-tune the waveform display. The Flex knob can also be used for precise adjustments.
Video 5.1: An overview of the DHO900 series oscilloscope's physical appearance and key control elements.
5.4 Measurements and Analysis
The oscilloscope offers various measurement functions (e.g., voltage, frequency, period) and analysis tools (e.g., FFT, histograms). Access these features through the touchscreen menu or dedicated buttons like Measure and Analyse. The waveform search and navigation function helps in quickly identifying specific signal abnormalities within long acquisitions.
6. Maintenance
6.1 Cleaning
To clean the oscilloscope, use a soft, damp cloth. Avoid using abrasive cleaners or solvents that could damage the casing or screen. Ensure the device is powered off and disconnected from the power source before cleaning.
6.2 Storage
When not in use, store the oscilloscope in a dry, dust-free environment, away from direct sunlight and extreme temperatures. Protect the screen and connectors from physical damage.
7. Troubleshooting
7.1 No Power
- Ensure the power cable is securely connected to both the oscilloscope and the power outlet.
- Verify that the power outlet is functional.
- If using Type-C power, ensure the power bank is adequately charged and compatible.
7.2 No Waveform Display
- Check that probes are correctly connected to the input channels and the signal source.
- Press the AUTO button to automatically adjust settings.
- Verify the input signal is within the oscilloscope's vertical sensitivity range.
- Adjust the vertical (SCALE) and horizontal (SCALE) settings manually.
7.3 Unresponsive Touchscreen
- Ensure the screen is clean and free from debris.
- Restart the oscilloscope.
- If the issue persists, contact RIGOL customer support.
8. Specifications
| Feature | Specification |
|---|---|
| Product Dimensions | 10.45 x 3.05 x 6.37 inches; 3.92 Pounds |
| Item Model Number | DHO924S |
| Manufacturer | RIGOL |
| Date First Available | September 1, 2023 |
| ASIN | B0CGHTLRHS |
| Best Sellers Rank | See Top 100 in Industrial & Scientific |
9. Warranty and Support
9.1 Warranty Information
The main unit of RIGOL equipment, including the DHO924S, comes with a 3-year standard warranty. Please retain your proof of purchase for warranty claims.
9.2 Customer Support
For technical support, service, or additional documentation, please visit the official RIGOL website or contact their customer service department. Online version upgrades are also available to ensure your device has the latest features and performance enhancements.
