1. Introduction
The HD66K-20N is an advanced PTZ (Pan-Tilt-Zoom) conference camera designed for high-quality video conferencing, live streaming, and online education. Featuring NDI|HX2 technology, it offers low-latency, plug-and-play audio, video, and control command transmission over a single network cable, simplifying project deployment. With a 4K (3840x2160) ultra-high-resolution 8MP sensor and 20X optical zoom, it delivers crisp, clear images. Its AI Human Auto-Tracking ensures subjects remain in frame, making it ideal for dynamic environments like church live streaming, sports events, and professional video productions.
2. Package Contents
Please check the box for the following items:
- HD66K-20N PTZ Camera
- IR Remote Control
- User Manual
- Power Adapter (DC12V / 1.5A)
- Wall Mount Bracket
- LAN Cable (Ethernet)
- USB Cable (USB 2.0 / USB 3.0)
- HDMI Cable
- RS232 Cable (DB9)
- Power Cable

3. Product Overview
The HD66K-20N camera features a robust design with multiple connectivity options and advanced imaging capabilities.
3.1 Camera Features
- 4K UHD Sensor: New generation Sony 1/1.7-inch high-quality UHD CMOS sensor with 8.51 million pixels.
- 20X Optical Zoom: 4K ultra-long focal lens with 8 million ultra-high resolution.
- AI Human Auto-Tracking: Automatically tracks human subjects to keep them in frame.
- Low Light Compensation: Automatically adjusts brightness for clear video in dark environments.
- Gravity Sensor: Supports automatic image flipping for inverted installations.


3.2 Rear Panel Connections
The rear panel of the camera provides various ports for video, audio, control, and power:

- DC 12V: Power input.
- LINE IN / LINE OUT: Audio input and output.
- LAN (NDI/POE): Ethernet port for network connectivity, NDI|HX2 video/audio transmission, and Power over Ethernet (PoE).
- USB 2.0: USB connection for video output.
- RS485: Control interface.
- SYSTEM SELECT: Button for system settings.
- IR: Infrared receiver.
- RS232 IN / OUT: Serial control interfaces.
- HDMI: HDMI video output.
- TYPE-C REST (USB 3.0): USB 3.0 connection for video output.
4. Specifications
| Feature | Description |
|---|---|
| Image Sensor | 1 / 1.8 inch high quality CMOS sensor |
| Effective Pixels | 8.42 million, 16:9 |
| Video Output Interface | NDI HX POE, SDI, HDMI, LAN, USB3.0, USB2.0 |
| Lens | 20X Optical Zoom (f1.6 – F3.5, F = 5.5 ~ 110mm) |
| View Angle | 3.3° (narrow) - 72.5° (wide) |
| Gain Control | Auto/Manual |
| Focus | Auto/Manual |
| Horizontal Rotation | -170° to +170° |
| Pitch Rotation | -30° to +90° |
| Horizontal Control Speed | 0.1° ~ 60° / s |
| Pitch Control Speed | 0.1° ~ 30° / s |
| Control Protocol | VISCA / PELCO-D / PELCO-P (Baud rates: 115200 / 9600 / 4800 / 2400) |
| Preset Positions | IR remote: 10 presets; PELCO Protocol: 255 presets |
| Minimum Illumination | 0.5Lux (f1.8, AGC on) |
| Digital Noise Reduction | 2D & 3D digital noise reduction |
| Image Stream | Double stream output |
| Video Compression Format | H.265, H.264 |
| Audio Compression Format | AAC, MP3, G.711a |
| Network Interface | 100M network port (10 / 100base-TX), 5G WiFi (optional) |
| Network Protocols | RTSP, RTMP, ONVIF, GB / T28181 |
| Power Interface | HEC3800 power socket (DC12V) |
| Input Voltage | DC12V ± 10% |
| Power Consumption | 12W (maximum) |
| Operating Temperature | -10℃~+50℃ / 20%~80% RH |
| Storage Temperature | -10℃~+60℃ / 20%~95% RH |
| Installation | Desktop, Tripod, Wall mount, Ceiling mount |
| Certificates | CE / FCC / ROHS / ISO 9001 |
5. Setup
5.1 Installation Options
The HD66K-20N camera supports various installation methods to suit your environment:
- Desktop: Place the camera on a flat surface.
- Tripod: Mount the camera onto a standard tripod for portable use.
- Wall Mount: Use the provided bracket to securely attach the camera to a wall.
- Ceiling Mount: Install the camera inverted on the ceiling using the bracket. The gravity sensor will automatically flip the image.
- Interactive Whiteboard: Mount the camera above or below an interactive whiteboard.

5.2 Connecting the Camera
- Power Connection: Connect the provided power adapter to the DC 12V port on the camera and plug it into a power outlet.
- Video Output:
- HDMI: Connect an HDMI cable from the camera's HDMI port to your display or capture device.
- SDI: Connect an SDI cable from the camera's SDI port to a compatible SDI input device.
- USB: Connect a USB 2.0 or USB 3.0 cable from the camera to a computer for video capture.
- NDI/LAN (PoE): For NDI|HX2 streaming and Power over Ethernet, connect an Ethernet cable from the camera's LAN port to a PoE-enabled network switch or injector. This single cable can provide power, video, audio, and control. If not using PoE, ensure the DC 12V power adapter is connected.
- Audio Connection: If external audio input/output is required, connect audio devices to the LINE IN and LINE OUT ports.
- Control Connection: For external control, connect RS232 or RS485 cables to a compatible control panel or computer.

6. Operation
6.1 Basic Controls (IR Remote)
The included IR remote control allows for easy adjustment of camera functions:
- Pan/Tilt: Use the directional arrows to move the camera horizontally and vertically.
- Zoom: Use the '+' and '-' buttons to zoom in and out.
- Focus: Adjust focus manually or use auto-focus.
- Preset Functions: The IR remote supports up to 10 preset positions. To set a preset, position the camera, then press 'SET' followed by a number (0-9). To recall a preset, press the number.
- Image Flip: If the camera is ceiling mounted, use the 'DOWN' key on the remote to flip the image for correct orientation.


6.2 AI Auto-Tracking
The camera's AI Human Auto-Tracking feature can be enabled to automatically follow a presenter or speaker. Refer to the detailed user manual (PDF) for specific instructions on activating and configuring AI tracking modes.
6.3 Advanced Control (Network/RS232/RS485)
For more sophisticated control, the camera can be integrated into a video conference system using network protocols (RTSP, RTMP, ONVIF) or serial communication (RS232, RS485). This allows for control via a keyboard controller (supporting up to 255 preset positions) or other compatible software/hardware.

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.
- Environment: Operate and store the camera within the specified temperature and humidity ranges to ensure optimal performance and longevity.
- Firmware Updates: Periodically check the manufacturer's website for firmware updates to enhance features and improve stability.
- Cable Management: Ensure all cables are neatly organized and not under strain to prevent damage.
8. Troubleshooting
- No Power: Ensure the power adapter is correctly connected to the camera and a working power outlet. If using PoE, verify the Ethernet cable is connected to a PoE-enabled port and the PoE source is active.
- No Video Output: Check all video cables (HDMI, SDI, USB, LAN) are securely connected. Ensure the display or capture device is set to the correct input source. Verify network settings for NDI streaming.
- Camera Not Responding to Controls: For IR remote, check battery levels and ensure no obstructions between the remote and the camera's IR receiver. For serial control (RS232/RS485), verify cable connections, baud rate settings, and control protocol. For network control, check network connectivity and IP address settings.
- Poor Image Quality: Ensure adequate lighting in the environment. Check camera focus (auto or manual). Adjust exposure settings if the image is too dark or bright. Verify digital noise reduction settings.
- AI Tracking Issues: Ensure the subject is clearly visible and within the camera's field of view. Avoid rapid, erratic movements that might confuse the tracking algorithm.
9. User Tips
- Utilize Presets: For recurring meetings or events, set up and save camera presets for different speakers or areas of interest. This allows for quick and seamless transitions during live sessions.
- Leverage AI Tracking: When presenting, enable AI auto-tracking to free yourself from manual camera adjustments, allowing you to focus on your content.
- Simplify with PoE: If your network infrastructure supports it, use Power over Ethernet (PoE) to reduce cable clutter and simplify installation, as a single Ethernet cable can carry power, video, audio, and control signals.
- Optimize Lighting: While the camera has low light compensation, optimal lighting conditions will always yield the best video quality. Avoid strong backlighting that can silhouette subjects.
10. Warranty and Support
10.1 Product Warranty
This product comes with a ONE-year warranty from the date of purchase, covering manufacturing defects. Please retain your proof of purchase for warranty claims.

10.2 Technical Support
For technical assistance, troubleshooting, or warranty inquiries, please contact your vendor or refer to the official product support channels. Ensure you have your product model and serial number ready when seeking support.
