10. Back button
11. 5D button
Quick Start Guide
V1.0
Linking
Introduction
ASCENT VRX
Upgrade
SD Card
USB Interface
Please go to the official website to download the upgrade firmware,
Ascent_G_Gnd_X_X_X.img is the VRX file, copy it to the SD card, be
careful not to change the file name.
1. Copy the upgrade file to the root directory of the SD card,
connect to the power supply and wait for the device to initialize
(delete the old firmware file first if there in one).
2. Press and hold the link button on the VRX for 8 seconds, and the
Goggles automatically restart and emit a beep...beep...beeper sound.
(Do not power off during the upgrade process, the upgrade time on the
goggle is about 1 minutes)
3. After the upgrade is successful,and the beeping sound stops after the
Goggles beeps for 5 seconds.
It is recommended to perform a factory reset after the upgrade is completed.
Note: When upgrading the VRX to a new firmware version, please upgrade
the VTX to the firmware version corresponding to the VRX. After upgrading
the VTX, select 'Reset VTX Parameters' on the VRX.
Please download the latest upgrade tool and firmware from the official
website. The Ascent_G_Gnd_X_X_X.img corresponds to the headset-side
firmware upgrade. Do not rename the file.
1. Open the Caddx_PC_Tool on your computer. When the VRX side is
connected to the computer via a USB cable and powered on, you can follow
the prompts to select the Ascent_G_Gnd_X_X_X.img firmware for the
upgrade.
2. Follow the above steps, and wait until the upgrade progress bar finishes
to complete the upgrade.
Note: When upgrading the Ascent VRX, an external battery must be
connected to the DC port for power.
1. Connect the VTX and the power of the VRX.
2. Press the link button of the VTX and VRX respectively (as shown in the
picture), when the VTX enters the pairing state The indicator light turns
red, and the VRX end is a DI... DI... DI...
3. After the link is successful, the indicator light on the VTX turns solid green,
the beeping sound on the VRX stops and the screen is displayed.
Goggles Buzzer Status
Link state
Upgrade firmware
Upgrade failed
(No SD card or firmware detected)
Boot failure
(Reboot or re-upgrade)
DI.... DI.... DI.... DI....
DI...... DI...... DI...... DI——
DI.. DI.. DI.. DI..
DI.. DI...... DI.. DI......
Status indication
CADDXFPV SUPPORT
email: [email protected]
Model
Communication Frequency
Transmitter Power(EIRP)
l/O Interface
HDMI Out
Power Input
SD Card
System
Weight
Dimension
Ascent VRX
5.738-5.805GHz
FCC:<20dBm, CE:<14dBm, SRRC:<20dBm
HDMl, Micro SD Card, DC5.5*2.1mm
1080p60fps, 720p60fps
7.4~25.2V
Support 256G
Ascent HD system
117.9g
114.3*64*24mm
Red bird
LHCP
5.6GHz-6.0GHz
2dBi
≥97%
≤1.3
-15to-30dB
RP - SMAx2
24.8*15.3mm
Model
Polarization
Bandwidth
Average Gain
Radiation Efhciency
VSWR
Cross-Polar Rejection
Connector
Dimension
Weight
3.5g
1. This is a sophisticated product. Failure to operate this product in a safe
and responsible manner could result in injury or damage to the product or
other property. lt must be operated with caution and common sense and
requires some basic mechanical knowledge.
2. In standby mode, if the VTX is not unlocked, transmission power is limited
to 3.821mW.
3. There are up to three channels for the goggles depending on the region.
Bandwidth of 5MHz and 20MHz.
4. It is recommended to upgrade VTX and Goggles to the latest firmware
before first use.
Precautions
Specifications
Operating channel
Operating channel
Make sure you fully understand and abide by local laws and regulations
before using this product. Users who use the amateur frequency bands with
a modified or cracked version or without a license may be punished for
breaking local laws or regulations.
Input Voltage range 7.4–25.2V.
Press the back button for 5 seconds to return 720p/60fps.
1
1. Antenna base
2. Power supply
3. USB Interface
4. Expansion Interface
5. SD card slot
6. Link button
[1]
[2]
[2]
[1]
7. HDMI out
8. 1/4 thread mouth
9. Record button
2
7
6
8
9
10
11
3
4
5
Link button
Short press to enter the linking state, long press for 8 secondsto enter the
upgrade state.
5D button
Toggle the button to scroll through the menu. Press the button to confrm.
Back button
Press to return to the previous menu or exit the current mode.
Record button
Press to start or stop video recording
1-VTX input voltage:
Detect VTX voltage, intelligently identify the voltage of 2, 3, 4, 6 string LiPo
batteries, alarm when a single battery is lower than 3.5V, and alarm in red
font when the voltage is too low.
2-VRX input voltage:
Detect VRX low battery alarm, intelligently identify the voltage of 2, 3, 4,
6 string LiPo batteries, alarm when a single battery is lower than 3.5V, red
font and buzzer alarm when the voltage is too low.
3-Real-time bit rate:
Display real-time transmission bitrate in Mbps, with 10.0M and 20.0M
bandwidth modes.
4-Time delay:
Displays the total delay from the transmission of images captured by the
VTX camera to the ground end.
5-Ranging mode:
The function of calculating the transmission distance from VRX to VTX
according to the wireless transmission delay, the signal is interfered will
lead to error amplification。
6-Status prompt:
The text prompts information that needs attention in the current state.
7-Current channel:
Display the current setting channel, the signal grid has 5 states, 4 grids,
3 grids, 2 grids, 1 grid, and blank.
8-VRX SD card status:
Display the status and remaining capacity of the VRX SD card. When
recording, the red circle flashes to prompt, the status of the SD card not
detected is displayed as NO SD, and the status of the memory is full is
displayed as -.
9-Remote Controller Signal Status:
There are five signal bar states: 4 bars, 3 bars, 2 bars, 1 bar, and no bar.
When no remote controller signal is detected by the image transmission
module, this icon will be hidden.
1-Channel:
Displays the interference status of each channel. Signal strength is shown as
4 bars, 3 bars, 2 bars, 1 bar, or empty. An empty signal bar indicates the
channel is occupied and cannot be selected. A white outline represents the
selection box. Press the confirm button to highlight a channel, and the
highlighted one is the current channel.
2-Frequency Hopping:
When frequency hopping is enabled, the goggles will automatically select the
channel with the least interference. Manual channel switching is not available
in this mode.
3-Refresh:
Click Refresh to re-scan all channels and update their interference status.
Software interface
1-Camera:
The adjustable contents of the camera are scene preset, EV value, saturation,
sharpness, white balance, rotate, ratio, 3D DNR, Shutter, and Max ISOsettings.
2-Display:
Display adjustable content is Debug, brightness, focalization mode, custom
OSD, OSD position, font upgrade, custom font, viewfinder, viewfinder edit
settings.
3-Refresh set:
The recording can be adjusted as VTX REC resolution, REC device, take off
REC, REC loop, format SD card, format VTX, Built-in EIS, REC Time, REC
Format, Color, Saturation, Sharpness.
4-Device:
Adjustable settings include Buzzer Volume, Ranging Mode, Signal Loss Alert,
Restore Factory Settings, Reset VTX Defaults, Device Information, User
Guide, Mode Switching, DVR Bitrate (VRX), and Anti-Flicker.
5-Transmission Power:
Default selectable transmission power: 25 mW, 100 mW.
6-Resolution:
Selectable resolutions: 720P and 1080P.
7-Bandwidth:
Selectable 10.0M and 20.0M options for different image quality. High bitrate
is only supported when FCC mode is enabled.
8-Frame Rate:
The standard frame rate is eq
ual to 60fps.
9-Standby Mode:
In standby mode, both the air unit and goggles transmit at 10 dBm.
Transmission power will only return to the configured value after exiting
standby mode or turning it off. This function requires the air unit to be
properly connected to the FC via serial port—when the VRX detect an arming
signal from the VTX, standby mode exits automatically.
If no FC is supported, this function can be disabled.
10-Language:
Language switching English/中文.
11-Battery Alarm:
Monitors the low battery status of the VRX. When voltage is too low, a
red text warning and buzzer alert will be triggered. This feature can be
enabled or disabled.
12-Preferences:
Preset transmission modes: Smooth, High Quality, Long Range.
Main interface-1
Menu Channel-2
1、The OSD switch can be turned on or off. When it is turned on, the FC OSD
information (if any) and the information of the main interface will be
superimposed on the playing video interface. When the selection box stays in
the video list, press and hold the Goggles confirmation key to open the multi
-selection function, and the menu box will display function settings (delete,
select all) , cancel), press the return key again to exit the multi-selection mode.
2、On the playback interface, click the middle button to pause/play, and
the left and right arrow keys to adjust rewind/fast forward
Menu Settings-4
Menu Playback-5
123G
25.4V
7.4V
22ms25Mbps 259m
No Sig
RC
Standby mode
1 2 3 4 5 6 7
8
9
Channel
59G
7.4V
7.4V
45ms25Mbps 259m CH2
CH1 (5730-5750)
CH2
(5760-5780)
CH3 (5795-5815)
Hop Refresh
Channel PlaybackSettings
Settings
59G
7.4V
7.4V
45ms25Mbps 259m
Transmit Power
Camera Display Record Set Device
Resolution Bandwidth
Frame Rate
Battery Warning
Standby Mode Language
25mW
60FPS
1080p
On
Auto
English
Preference Smooth
AUTO
Channel PlaybackSettings
Playback
59G
7.4V
7.4V
45ms25Mbps 259m AUTO
AscentG0007 0‘41
AscentG0004 1‘41
AscentG0006 3‘41
AscentG0003
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5‘41
AscentG0005 3‘01
AscentG0002 8‘41
AscentG0001 2‘41
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Channel PlaybackSettings
Caddx PC Tool
Version: V1.1.5
Firmware Upgrade
Ascent Gnd KIT Disconnect
HardwareVer:
SN:
Firmware:
Temperature:
FPV-Edu-Gnd-485-V2.0
1234567890
Ascent_G_Gnd_16_1_30
52℃
FAQ
Setting
2025 Caddx Technology (shenzhen) Co., Ltd.
100%
Upgrade finished!
Select Upgrade
Caddx PC Tool
Version: V1.1.5
Firmware Upgrade
Ascent Gnd KIT Disconnect
HardwareVer:
SN:
Firmware:
Temperature:
FPV-Edu-Gnd-485-V2.0
1234567890
Ascent_G_Gnd_16_1_30
52℃
FAQ
Setting
2025 Caddx Technology (shenzhen) Co., Ltd.
Please Load The Firmware
Select Upgrade
Open
<< tool > Ascent GT Upgrade > Ascent_VRX update Image
组织 新建文件夹
Ascent_G_Gnd_16_1_30.img
Ascent_G_Gnd_16_1_30.img
All Files (*)
打开 (O) 取消
文件名(N):
1
2
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4
FCC
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference
by one or more of the following measures:-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment
*RF warning for Mobile device:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance
20cm between the radiator & your body.
