1. Introduction
The Topotek 1080P Visible Light + 640x512 Thermal Imaging Dual Light Gimbal is a high-precision, professional 3-axis stabilized PTZ system designed for UAV aerial photography. It integrates a 1080P visible light camera and a 640x512 thermal imaging module, offering versatile imaging capabilities. This gimbal features network output and control, utilizing a high-precision encoder FOC control scheme for high stability, small size, light weight, and low power consumption.
The visible light camera incorporates a low illumination CMOS SENSOR with 2 million effective pixels, while the thermal imaging module uses a 640x512 resolution vanadium oxide detector. The system supports network RTSP picture-in-picture code stream output, multiple picture-in-picture modes, various pseudo-color displays, and a global temperature measurement function. Both serial port and network interfaces allow control of the cameras and PTZ, with support for local TF card two-way video recording and photography. The thermal imaging lens has a focal length of 9.1mm.

2. Key Features
- 1080P visible light camera + 640x512 thermal imaging module
- Multiple pseudo color modes for thermal display
- Standard RTSP stream output
- TF card 2-way video recording capability
- 170ms low latency for real-time operation
- Support for Picture-in-Picture (PIP) mode
- Network and UART control interfaces
- 3-Axis stabilized gimbal design
- Lightweight at approximately 200g
- 9x Digital zoom for visible light


3. Specifications
General Specifications
| Parameter | Value |
|---|---|
| Gimbal Size | 53mm × 66.1mm × 91.5mm |
| Weight | 200 ± 10g |
| Working Condition | -10℃ to +45℃ / 20% to 80% RH |
| Storage Environment | -20℃ to +60℃ / 20% to 95% RH |
| Main Applications | UAV aerial photography |
| Origin | Mainland China |
Daylight Sensor Parameters
| Parameter | Value |
|---|---|
| CMOS Size | CMOS SENSOR pixel: 2 million pixels |
| Optical Zoom | 1080p HD optical zoom lens, f=4.9±10%~49±10%mm |
| Focus Time | Real time focusing, fast focusing time < 1s |
| Video Output | IP output RTSP 1080P / 480P video stream, local TF1080P storage |
| FOV (Field of View) | D: 77°, H: 60°, V: 43° |
| Support Mode | 1080P 30fps |
Thermal Imager Parameters
| Parameter | Value |
|---|---|
| Resolving Power | 12μm |
| Pixel Spacing | Uncooled focal plane microbolometer |
| Type | 8~14μm |
| Wavelength Range | ≤65mk@30℃ |
| Thermal Sensitivity (NETD) | Adjustable |
| Field Angle | 9.1mm Lens. Angle: 34.4 x 25.8 |
| Measurement Function (Optional) | Center point, highest temperature, lowest temperature display function |
Technical Parameters
| Parameter | Value |
|---|---|
| Voltage | 3S / 6S (11V-26V) |
| Power | 4w |
| Roll Angle | -45°~+45° |
| Pitch Angle | -105°~+80° |
| Yaw Angle | -150°~+150° |
| Jitter Angle | ±0.02° |
| Horizontal Jitter Angle | ±0.03° |
| One-Click Restore | One-click restore to the initial position |
| Adjustable Gimbal Speed | Speed adaptation based on current speed mode and visible light camera multiple |
| Control Mode | Network IP control and serial port control (SBUS and PWM control are optional) |


4. Setup and Installation
4.1 Mounting
The gimbal features an installation hole spacing of 65.5mm x 65.5mm. The recommended mounting hole size is M3. Ensure secure attachment to your UAV or mounting platform.
4.2 Power Supply
The gimbal requires a power supply of 11V-26V, compatible with 3S-6S lithium batteries. If using the same battery for both the gimbal and the aircraft, verify that the battery voltage meets the specifications for both devices.
4.3 Signal Control and Video Output
The gimbal supports multiple signal control methods and provides network IP HD video output via RTSP code stream.
| Category | Type | Description |
|---|---|---|
| Signal Control | S.Bus Control Signal Output | Utilizes a 3P S.Bus signal output line for GND (signal ground), 5V OUT (5V voltage output), S. BUS (SBUS control signal), and NC (PTZ standby control signal). |
| Network IP Signal | Supports NET TN, NET TP, NET RN, NET RP for network IP signal communication. | |
| Serial Port Control | RX connects to external equipment TX, and TX connects to external equipment RX. | |
| Video Output | Network IP HD video output RTSP code stream. |


5. Operating Instructions
5.1 Gimbal Control
The gimbal can be controlled via network IP or serial port (SBUS and PWM control are optional). The adjustable gimbal speed feature allows the PTZ to adapt its rotation speed based on the current speed mode and the visible light camera's zoom level. A 'One-Click Restore' function is available to return the gimbal to its initial position.
5.2 Imaging Modes
The gimbal offers various imaging modes to suit different operational needs:
- Visible Light Mode: Captures high-definition 1080P video with 9x digital zoom.
- Thermal Imaging Mode: Provides 640x512 thermal imagery.
- Pseudo Color Modes: Multiple pseudo-color display options are available for thermal imaging, which can be cycled through via command.
- Picture-in-Picture (PIP) Modes: Supports 5 different PIP configurations:
- Single visible light mode
- Visible light big picture + thermal imaging small picture mode (default)
- Single thermal imaging mode
- Thermal imaging big picture + visible light small picture mode
- Visible light + thermal imaging left and right split screen mode



5.3 Video Recording and Storage
The system supports local TF card two-way video recording and photography. Ensure a compatible TF card is inserted into the designated slot for recording. Video output is available as Network IP HD video output RTSP code stream.
6. Maintenance
- Cleaning: Gently clean the camera lenses and gimbal body with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the gimbal in a dry environment within the specified storage temperature range (-20℃ to +60℃) and humidity (20% to 95% RH).
- Firmware Updates: Check the manufacturer's website periodically for any available firmware updates to ensure optimal performance and access to new features.
- Battery Care: If using a separate battery for the gimbal, follow the battery manufacturer's guidelines for charging, discharging, and storage.
7. Troubleshooting
- Gimbal Not Powering On: Verify that the power supply voltage is within the 11V-26V range and that all power connections are secure. Check battery charge level.
- No Video Output: Ensure the network IP connection is stable and configured correctly. Check TF card for proper insertion and sufficient storage. Verify RTSP stream settings.
- Gimbal Not Responding to Control: Check S.Bus, network IP, or serial port connections. Ensure control signals are correctly configured and transmitted. Perform a 'One-Click Restore' if the gimbal is in an unresponsive state.
- Image Quality Issues: Ensure lenses are clean and free from obstructions. Check environmental conditions are within the specified working range.
- Unstable Gimbal Movement: Verify that the gimbal is securely mounted and balanced. Check for any physical obstructions to movement.
8. User Tips
- For optimal thermal imaging results, ensure the environment is within the specified working temperature range.
- Experiment with different pseudo-color modes to find the best visualization for your specific application and target.
- Regularly back up recorded footage from the TF card to prevent data loss.
- When integrating with a new UAV, always perform initial tests in a controlled environment to verify all connections and control functions.
- Utilize the Picture-in-Picture modes to simultaneously monitor both visible light and thermal feeds, enhancing situational awareness during operations.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase. Please note that product appearance, size, weight, and power consumption may change slightly due to product upgrades. Always refer to the latest documentation or contact the sales department for the most current information.