1. Introduction
The CADDX Walksnail Ascent GT Pro 4W KIT is a high-performance digital video transmitter (VTX) designed for FPV (First Person View) racing and long-range RC applications. This kit provides extreme distance capabilities with its 4000mW (4W) output and dual antenna system, ensuring a robust and clear video link for your FPV aircraft. This manual will guide you through the setup, operation, and maintenance of your Ascent GT Pro 4W KIT.
2. Package Contents
Upon opening your CADDX Walksnail Ascent GT Pro 4W KIT, please ensure all the following components are present:
- Ascent GT Pro VTX Unit
- FPV Camera
- 2x Antennas
- Connection Cables
Image: CADDX Walksnail Ascent GT Pro 4W KIT components including VTX, camera, and antennas.
3. Product Overview
Familiarize yourself with the main components and their functions:
Image: Diagram showing the Ascent GT Pro components and their labels.
- Camera
- Fan
- Power Port
- VTX LED
- Link Button
- Gimbal Port
- Type-C Port
- Antenna
4. Setup
4.1. Wiring Connection
Connect the VTX to your flight controller using the provided cables. Pay close attention to the pinout diagram to ensure correct connections.
Image: Detailed wiring diagram for VCC, GND, RX, TX, GND, SBUS connections.
- Power Consumption Reference: 12V @ 1.5A. Ensure your power source can provide adequate current.
- The product generates significant heat during operation. Ensure proper airflow for cooling to prevent overheating.
4.2. Flight Controller OSD Setup (Betaflight 4.5 or later)
To access the VTX serial port to the flight controller and display OSD information, follow these steps. This example uses Betaflight Configurator 10.10.0 with firmware version 4.5.0.
- Solder the blue and green wires from the 6-pin power cable to the UART1 port on the flight controller (refer to the connection page for specific details).
- Connect the flight controller to Betaflight Configurator. Open the corresponding UART port, check the MSP option, and enable VTX (MSP+Displayport).
- On the Presets page, search for "Avatar OSD" or "HD OSD" and click to select it.
- On the OSD page, configure the information you want to display.
Image: Screenshot of Betaflight Configurator showing OSD settings for Betaflight 4.5.
4.3. Flight Controller OSD Setup (Betaflight 4.4 version settings)
For Betaflight 4.4, the process is similar:
Image: Screenshot of Betaflight Configurator showing OSD settings for Betaflight 4.4.
5. Operation
5.1. Linking
To establish a video link between your Ascent GT Pro VTX and your ground unit (goggles):
- Connect the Ascent GT Pro VTX and the Ascent ground unit.
- Short-press the frequency pairing button on both the Ascent GT Pro and the Ascent ground unit.
- When the Ascent GT Pro enters pairing mode, the VTX LED will light solid red, and the goggles will emit a beep pattern: Di...Di...Di...
- Once the connection is successful, the VTX LED will turn solid green, the beeping from the goggles will stop, and the video image will be displayed.
6. Firmware Upgrade
To upgrade the firmware of your Ascent VTX, follow these steps:
- Connect the Ascent VTX to your computer using a Type-C USB cable.
- Open the Caddx PC Tool software on your computer.
- Click the "Ascent Sky KIT" connection option and then click "Connect".
Image: Screenshot of Caddx PC Tool showing the 'Connect' button for Ascent Sky KIT.
- Once the USB connection is established, click the "Select" button to open the pop-up window.
- Choose the corresponding firmware file (e.g., Ascent_G_Sky_XX_XX.img) for the upgrade.
Image: Screenshot of Caddx PC Tool showing the firmware selection process.
- Click "Open" to load the firmware, then click "Upgrade" to start the upgrade process.
- Important: Do not restart or power off the device during the upgrade process to avoid upgrade failure.
Image: Screenshot of Caddx PC Tool indicating firmware upgrade in progress.
- Once the upgrade is completed, you will see a confirmation message. Unplug the cable only after the upgrade has successfully finished.
7. Precautions
- Before powering on, please install all antennas to avoid damage to components.
- When the standby mode is turned on, the power is limited to 10mW. Before taking off, you need to unlock the flight control or turn off the standby mode.
- If you use it with other 5.8GHz devices at the same time, please choose a different channel to avoid interference.
- If you use the Gyroflow function of the camera, please provide shock absorption for the fixed deck of the camera to avoid the failure of the anti-shake feature.
8. Specifications
| Feature | Specification |
|---|---|
| Brand Name | CADDXFPV |
| Model Number | CADDX Ascent GT Pro 4W KIT |
| Material | Composite Material |
| For Vehicle Type | Airplanes |
| Tool Supplies | Assembly Category |
| Four-wheel Drive Attributes | Assemblage |
| Remote Control Peripherals/Devices | Ascent GT Pro 4W KIT |
| Upgrade Parts/Accessories | Adapter |
| RC Parts & Accs | Transmitters |
| Origin | Mainland China |
| Recommend Age | 14+y |
| Use | Vehicles & Remote Control Toys |
| Is Electric | No Battery (Requires external power) |
| Is Batteries Included | No |
| Quantity | 1 pcs (Kit) |
| High-concerned chemical | None |
| Power Consumption | 12V @ 1.5A |
| Output Power | 4000mW (4W) |
| Package Weight | 0.2 kg |
| Package Dimensions (L x W x H) | 22 x 12 x 5 cm |
9. Troubleshooting
This section provides guidance on interpreting the status indicators and buzzer patterns for common issues.
Image: Table detailing Goggles Buzzer Status and VTX Indicator Status.
| Condition | Goggles Buzzer Status | VTX Indicator Status | Possible Cause / Solution |
|---|---|---|---|
| Link state (Pairing) | Di...Di...Di... | Steady red light | VTX is in pairing mode. Ensure ground unit is also in pairing mode. |
| Upgrade firmware | Di.........Di...Di... | Red light rapidly flashes | Firmware upgrade in progress. Do not disconnect power. |
| Upgrade failed | Di..Di..Di.. | N/A | Firmware upgrade failed. Re-attempt the upgrade process carefully. |
| Wireless connection, image output is normal | N/A (No beep) | Steady green light | Normal operation. |
| Wireless not connected | N/A | Green light rapidly flashes | VTX is powered on but not linked to the ground unit. Initiate linking process. |
| Wireless connection is normal, image is abnormal | N/A | Green light slowly flashes | VTX is linked, but there's an issue with the video signal. Check camera connection, cable integrity, or VTX settings. |
10. User Tips
Based on general user experiences with FPV equipment, here are some tips:
- Antenna Placement: Ensure your antennas are mounted securely and away from carbon fiber or other conductive materials that can block the signal. Proper antenna orientation is crucial for optimal range and signal quality.
- Cooling: Given the 4W output, the VTX can generate significant heat. Always ensure adequate airflow around the unit, especially during ground testing or prolonged use, to prevent thermal throttling or damage.
- Power Supply: Use a stable power supply within the specified voltage range (12V) and capable of delivering the required current (1.5A) to avoid performance issues or damage.
- Firmware Updates: Regularly check the manufacturer's website for the latest firmware updates. Updates often include performance improvements, bug fixes, and new features.
- Channel Management: When flying with others or in areas with potential interference, always perform a channel scan and select a clear channel to ensure the best video feed.
11. Warranty and Support
For warranty claims, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your proof of purchase for any warranty-related requests. Specific warranty terms and conditions may vary and are typically provided at the point of purchase or on the manufacturer's official website.
