SDTNOVA 3GSDI-2812D
SDTNOVA 3G SDI Camera User Manual
Model: 3GSDI-2812D
1. Introduction
Thank you for choosing the SDTNOVA 3G SDI Camera. This manual provides detailed instructions for the installation, operation, and maintenance of your new 2MP 1080P Digital CCTV Security Camera. Please read this manual thoroughly before using the product to ensure proper setup and optimal performance. Keep this manual for future reference.
2. Product Overview
The SDTNOVA 3G SDI Camera is a high-definition digital CCTV security camera designed for professional surveillance applications. It features a 1/2.8'' CMOS sensor, delivering 1080P resolution with a 2.8-12mm manual varifocal auto iris lens, providing flexibility in field of view and focus. Its robust design ensures reliable performance in various environments.

Figure 2.1: Front view of the SDTNOVA 3G SDI Camera, showcasing its compact design and varifocal lens.
3. Key Features
- High-Resolution Sensor: Equipped with a 1/2.8 CMOS image sensor for 3G / HD SDI digital signal and CVBS analog signal output.
- Versatile Lens: Features a 2.8-12mm Manual Varifocal Telephoto Auto Iris 3MP Lens with CS Mount for flexible viewing angles.
- Multiple Resolution Output: Supports 1080@60/50/30/25P, 1080@60/50i, 720@60/50/30/25P for broad compatibility with various devices.
- Effective 1080P HD: Delivers 1920x1080P high-definition image quality with no delay, no compression, low loss, and real-time transmission.
- Ultra-Wide Dynamic Range: Excellent performance against strong light, enhancing image contrast in challenging lighting conditions with frame rates up to 60fps.
- Advanced Noise Reduction: Incorporates 3D image denoising technology for purer images, finer details, and sharper visual effects.
4. What's in the Box
Please check the contents of your package to ensure all items are present:
- SDTNOVA 3G SDI Camera (Model: 3GSDI-2812D)
- DC12V 1A Power Adapter
- SDI Cable
- User Manual (this document)
5. Setup and Installation
5.1 Physical Connections
Identify the various ports on the rear panel of the camera for proper connection.

Figure 5.1: Labeled rear panel showing 3G-SDI Output, CVBS Output, DC12V 1A Power Input, OSD Menu Control, and Automatic Aperture Control Interface.
- Power Connection: Connect the supplied DC12V 1A power adapter to the 'DC12V' input port.
- Video Output (SDI): Connect an SDI cable from the 'SDI' output port to your SDI monitor, recorder, or switcher.
- Video Output (CVBS): For analog video output, connect a BNC to RCA cable (not included) from the 'CVBS' output port to a composite video input on a TV or monitor. This output can be particularly useful for initial setup and OSD menu access if the SDI signal is not yet configured.
- OSD Menu Control: The 'OSD' button allows access to the camera's On-Screen Display menu for configuration.
- IRIS: This port is for connecting an auto-iris lens if applicable. The included lens is manual varifocal with auto iris, so this port may not be used for the standard setup.


Figure 5.2: Detailed views of the camera's rear panel, showing port layout and a power connection example.
5.2 Mounting and Lens Adjustment
The camera is designed for versatile mounting. Ensure it is securely fastened to a stable surface or bracket. The 2.8-12mm varifocal lens allows you to manually adjust the field of view and focus to suit your surveillance needs.

Figure 5.3: Camera dimensions for mounting planning.
- Zoom Adjustment: Rotate the zoom ring on the lens to adjust the focal length (2.8mm for wide angle, 12mm for telephoto).
- Focus Adjustment: After setting the desired zoom, rotate the focus ring until the image is sharp and clear.
6. Operating Instructions
6.1 Powering On
Once the power adapter is connected, the camera will power on automatically. The power indicator light on the rear panel will illuminate.
6.2 Accessing the OSD Menu
The On-Screen Display (OSD) menu allows you to configure various camera settings. To access the OSD menu, press the 'OSD' button on the rear panel. Use the directional controls (usually by pushing and tilting the OSD button) to navigate through the menu options and confirm selections.
Important Note: Some users have reported issues with SDI output not working until the frame rate is adjusted in the OSD menu. If you experience no SDI signal, connect the camera via the CVBS output to a composite video input on a TV or monitor to access the OSD menu. Navigate to the 'System' submenu and change the 'Frame Rate' from 1080_60P to 1080_60I or a lower compatible resolution (e.g., 1080p 30Hz) for your SDI receiver.
6.3 Basic Menu Navigation (Blind Operation)
In situations where you cannot see the OSD menu (e.g., no signal on SDI/CVBS), you may attempt to change settings blindly using a known button sequence. This sequence is provided as a last resort and may vary slightly. The following sequence is reported to change the resolution to a more compatible setting:
Push → Up → Up → Push → Down → Down → Down → Right (x2 or more)
Ensure at least a 1-second delay between each button press. This sequence is for changing resolution settings and may not apply to all menu structures.
6.4 Image Settings
Within the OSD menu, you can adjust various image parameters:
- White Balance: Set to Auto Tracking White Balance for most scenarios. Manual adjustments are available if needed.
- Backlight Compensation (BLC): Set to Auto to optimize image visibility in scenes with strong backlighting.
- Noise Reduction: Adjust 3D DNR settings to reduce image noise, especially in low-light conditions.
- Exposure: Control brightness and shutter speed.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the camera body. For the lens, use a specialized lens cleaning cloth and solution. Avoid harsh chemicals or abrasive materials.
- Environmental Conditions: Ensure the camera operates within its specified working temperature range (-10℃~60℃). Avoid exposing the camera to extreme temperatures, humidity, or direct water.
- Firmware Updates: Check the manufacturer's website periodically for any available firmware updates to ensure optimal performance and access to new features.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No image/signal via SDI output. | Incorrect resolution/frame rate setting; faulty cable; power issue. |
|
| Image is blurry or out of focus. | Lens not properly focused. |
|
| Poor image quality (grainy, discolored). | Insufficient lighting; incorrect OSD settings (e.g., white balance, noise reduction); dirty lens. |
|
| Camera not powering on. | Power adapter issue; faulty power outlet. |
|
9. Specifications
| Model | 3GSDI-2812D |
| Sensor | 1/2.8'' CMOS Sensor |
| Effective Pixels | 1920(H)*1080(V) / 2MP |
| Resolution | 1080P 25(PAL) / 30(NTSC) FPS |
| Lens | 2.8-12mm Manual Varifocal Wide-Angle 3MP HD Lens CS Mount |
| Angle of View | 42°~110° |
| Video Output | 3G / HD SDI, CVBS |
| Backlight Compensation | Auto |
| White Balance | Auto Tracking White Balance |
| Working Temperature | -10℃~60℃ (14°F~140°F) |
| Dimensions (L x W x H) | 4.96 x 1.73 x 1.73 inches (12.6 x 4.4 x 4.4 cm) |
| Weight | Approx. 6.9 ounces (195g) |
| Power Supply | DC12V 1A |
10. Warranty and Support
SDTNOVA products are manufactured to the highest quality standards. For information regarding warranty coverage, please refer to the warranty card included with your purchase or visit the official SDTNOVA store on Amazon: SDTNOVA Amazon Store.
For technical support, troubleshooting assistance, or any inquiries about your product, please contact SDTNOVA customer service through the Amazon platform or the contact information provided on the official store page. Please have your model number (3GSDI-2812D) and purchase details ready when contacting support.
Optional protection plans may be available for extended coverage. Please check Amazon product page for details:
- 2-Year Protection Plan
- 3-Year Protection Plan
- Complete Protect (monthly plan)
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