1. ভূমিকা
The RIGOL DHO802 Digital Oscilloscope is a high-performance instrument designed for precise signal analysis. It features ultra-low background noise for pure signal acquisition and a 12-bit hardware high resolution across all series. With up to 70MHz analog bandwidth and 2 analog channels, it supports real-time sampling rates up to 1.25 GSa/s and a storage depth of up to 25 Mpts. The Ultra Aqua mode provides an impressive 1 million wfms/s waveform capture rate, making it ideal for capturing transient events.
Key features include gray scale digital real-time brightness function, waveform search and navigation, a 7-inch 1024x600 high-definition touch screen, and a new Flex knob for enhanced interactive experience. Connectivity options include USB Device & Host, LAN, and HDMI ports. The compact design ensures convenient maneuverability, and it supports online version upgrades.
Figure 1.1: Common applications for the DHO802 Digital Oscilloscope, such as embedded development, factory production lines, instrument maintenance, education and research, and automotive manufacturing.
৩.১. বাক্সে কী আছে
- প্রধান ইউনিট (1)
- Passive Probes (150MHz) (2)
- পাওয়ার সাপ্লাই (1)
- ইউএসবি কেবল (1)
- Grounding Cable (1)
- ওয়ারেন্টি কার্ড (1)
- Calibration Certificate (1)
- Card Certificate of Conformity (1)
Figure 2.1: Contents of the RIGOL DHO802 Digital Oscilloscope packaging, including the main unit, probes, power supply, USB cable, grounding cable, and documentation.
3. সেটআপ
3.1 প্যাকিং এবং পরিদর্শন
Carefully remove the oscilloscope and all accessories from the packaging. Inspect all items for any signs of damage during transit. If any damage is found, contact your supplier immediately.
3.2 পাওয়ার সংযোগ
- Ensure the oscilloscope is placed on a stable, flat surface with adequate ventilation.
- Connect the provided power cable to the power input on the rear panel of the oscilloscope.
- পাওয়ার কেবলের অন্য প্রান্তটি একটি উপযুক্ত এসি পাওয়ার আউটলেটে প্লাগ করুন।
- ডিভাইসটি চালু করতে সামনের প্যানেলের পাওয়ার বোতাম টিপুন।
3.3 প্রোব সংযোগ
The DHO802 comes with two passive probes. To connect a probe:
- Align the BNC connector of the probe with one of the input channels (CH1 or CH2) on the front panel.
- Push the connector in and twist clockwise until it locks into place.
- Attach the probe's ground clip to a common ground point in your circuit.
- For accurate measurements, ensure the probe compensation is correctly adjusted. Refer to the "Probe Compensation" section in the full manual for detailed instructions.
Figure 3.1: The RIGOL DHO802 Digital Oscilloscope with its included probes and cables, ready for setup.
4. অপারেটিং নির্দেশাবলী
4.1 সামনের প্যানেল ওভারview
The front panel of the DHO802 features a 7-inch 1024x600 high-definition touch screen and various controls for intuitive operation. Key controls include vertical scale and position knobs for each channel, horizontal scale and position knobs, trigger controls, and dedicated function buttons.
চিত্র 4.1: সামনে view of the DHO802, highlighting the touch screen and physical controls.
4.2 Basic Waveform Acquisition
- Connect the probe to the signal source you wish to measure.
- চাপুন অটো button on the front panel for automatic setup of vertical, horizontal, and trigger parameters.
- সামঞ্জস্য করুন উল্লম্ব স্কেল (V/div) and উল্লম্ব অবস্থান knobs for each channel to optimize the waveform display.
- সামঞ্জস্য করুন অনুভূমিক স্কেল (s/div) and আনুভূমিক অবস্থান knobs to view the desired time duration of the waveform.
- ব্যবহার করুন ট্রিগার controls to stabilize repetitive waveforms.
4.3 উন্নত বৈশিষ্ট্য
The DHO802 supports various advanced features accessible via the touch screen and Flex knob:
- Waveform Search and Navigation: Utilize the touch screen to easily navigate and search for specific events within long waveform records.
- Gray Scale Digital Real-time Brightness: Enhance waveform visibility with 256 levels of brightness, revealing signal details that might otherwise be hidden.
- সংযোগ: Use the USB, LAN, and HDMI ports for data transfer, remote control, and external display.
The oscilloscope's system supports switching between 8 major languages, including Chinese, English, German, French, Korean, Portuguese, Polish, and Japanese.
Figure 4.2: The DHO802 display demonstrating multi-language support.
৫.৫ ভিডিও প্রদর্শন
No official product videos from the seller were available for embedding at this time, as per the embedding guidelines.
5. রক্ষণাবেক্ষণ
- Keep the oscilloscope clean and free from dust. Use a soft, dry cloth for cleaning the exterior.
- ডিভাইসটিকে চরম তাপমাত্রা, আর্দ্রতা বা সরাসরি সূর্যের আলোতে প্রকাশ করা এড়িয়ে চলুন।
- Do not block the ventilation openings on the rear and sides of the instrument.
- Regularly check the probes and cables for any signs of wear or damage. Replace if necessary.
- For internal cleaning or repair, contact qualified service personnel.
6. সমস্যা সমাধান
- ক্ষমতা নেই: Ensure the power cable is securely connected and the power outlet is functional. Check the power button.
- কোন তরঙ্গরূপ প্রদর্শন নেই: Verify probes are correctly connected to the input channels and the signal source. Check vertical and horizontal scale settings. Ensure the trigger is properly set or use the Auto button.
- অস্থির তরঙ্গরূপ: Adjust the trigger level and trigger mode. Ensure the trigger source is appropriate for the signal.
- Software Freezing: If the software locks up, try restarting the device. If the issue persists, check for available online firmware updates.
- Distorted Waveform: Check probe compensation. Ensure the input signal does not exceed the oscilloscope's maximum input voltage.
For persistent issues, refer to the comprehensive help file built into the device or contact RIGOL customer support.
7. স্পেসিফিকেশন
| বৈশিষ্ট্য | স্পেসিফিকেশন |
|---|---|
| ব্যান্ডউইথ | 70 MHz |
| এনালগ চ্যানেল | ৫ + এক্সটি |
| রিয়েল-টাইম এসampলে রেট | ৫০ জিএসএ/সেকেন্ড পর্যন্ত |
| স্মৃতির গভীরতা | ২০০ এমপিটিএস পর্যন্ত |
| Waveform Capture Rate | Up to 1,000,000 wfms/s (Ultra Aqua mode) |
| উল্লম্ব রেজোলিউশন | 12-বিট |
| Vertical Sensitivity Range | 500 µV/div to 10 V/div |
| প্রদর্শন | 7-inch 1024 x 600 HD Touch Screen |
| সংযোগ | USB Device & Host, LAN, HDMI |
| পণ্যের মাত্রা | 10.5 x 6.4 x 3.0 ইঞ্চি (265.36 x 161.75 x 77.38 মিমি) |
| পণ্যের ওজন | 3.9 পাউন্ড (1.78 কেজি) |
Figure 7.1: Key technical specifications of the DHO802 Digital Oscilloscope, highlighting its 70MHz bandwidth and 12-bit resolution.
Figure 7.2: Physical dimensions and weight of the RIGOL DHO802 Digital Oscilloscope.
8. ওয়্যারেন্টি এবং সমর্থন
The main body of RIGOL equipment, including the DHO802 Digital Oscilloscope, comes with a standard 3-year warranty. For detailed warranty terms and conditions, please refer to the warranty card included in the product packaging.
For further support, technical assistance, or service inquiries, please visit the official Rigol Store on Amazon: Rigol Store.
