FrSky ACCESS G-RX8 User manual

Introduction
Thank you for purchasing FrSky G-RX8 8/24CH telemetry receiver. In order to fully enjoy the benefits of this system,
please read the instruction manual carefully and set up the device as described below.
Specifications
● Dimension: 55.26*17*8mm (L × W × H)
● Weight: 5.8g
● Number of Channels: 24CH
● Operating Voltage Range: 3.5V~10V
● Operating Current: 100mA@5V
● Operating Range: full range
● Firmware Upgradable
● Compatibility: ACCESS/*ACCST firmware
* Need to upgrade to the corresponding ACCST firmware
● Servo frame rate: 7ms (HS--High Speed Mode) / 20ms (FS--Normal Speed Mode)
Smart Port (S. Port) is a signal wire full duplex digital transmission interface developed by FrSky Electronic Co., Ltd. All
products enabled with Smart Port (including XJT module, RX8R receiver, new hub-less sensors, new Smart Dashboard, etc), serial
port user data and other user input/output devices can be connected without limitations for numbers or sequences at a high transmis-
sion speed.
Feature
● Variometer sensor: the measures range is -700m-10000m with the precision of 0.1m (high precision version),
support altimeter (the rate range is +-16.7m/s) .
● G-RX8 supports the redundancy function for the master and slave receivers. The master receiver receives SBUS
signal from the slave receiver. The master receiver can be G-RX8, and the slave receiver can be receiver with
SBUS output (for example, FrSky X8R, X6R, X4RSB, XSR, XM, XM+, R-XSR, G-RX8, L9R, etc) .
● Installed with ACCESS protocol
How to Disable/Enable altimeter function
a) The factory default setting is “enabled”.
b) In case you want to disable altimeter functionality bring the receiver into normal operational mode, hold the F/S
button > 3 s, the BLUE LED will flash 3 times, indicating the switch was successful and the function will be disabled.
(If you want to enable the function, just repeat steps).
How to Switch FS mode/HS mode
a) The factory default setting is FS mode.
b) To go to the receiver [Options], select the 7ms PWM or not.
Note: The SBUS output is 7ms, no matter HS/FS mode.
Warning: HS mode is only applied for digital servos. Other servos should select FS mode, otherwise
servos will get hot and may burn out.
How to switch SBUS / PWM mode
a) Turn on the receiver, if the BLUE LED on the receiver lights , the receiver is currently in SBUS mode, otherwise
it is in PWM mode.
b) Connect CH1 and CH2 signal pins with the included jumper before Binding, the receiver will enter into SBUS
mode. The receiver will enter into PWM mode without the jumper connected.
Note:
1. SBUS Mode: CH1~CH6 output high precision PWM signal (Error < 0.5 us), SBUS IN is used for redundancy
function &CH8 outputs SBUS signal &CH7 no outputs.
2.PWM Mode: CH1~CH8 output PWM signal. SBUS IN is used for redundancy function.
LED state
Green LED
On
Flash
Flash
On
On
Off
Red LED
On
Flash
Off
Off
Off
Flash
Status
Register
Register successfully
Bind
Bind successfully
Working normally
Failsafe
Registration & Automatic binding (Smart Match )
With the FrSky ACCESS protocol, the transmitter/transmitter module can bind receiver without using the "F/S"
button.
Follow the step below to finish the Registration & binding procedure:
1. Put the transmitter/transmitter module into [Reg] status.
1.1 For Taranis X-Lite Pro as an example, turn on the transmitter, go to the MENU-MODEL SETUP-PAGE 2,
choose Internal or External RF, and select [Reg].
2. Connect the battery to the receiver while holding the F/S button on the receiver. The RED LED and GREEN LED
on the receiver will be on, indicating into the [Reg] status. Select [ENTER] on the transmitter, The RED LED and
GREEN LED will flash, and the transmitter displays [Registration ok].
3. Turn off the receiver.
4. Move the cursor to select the receiver 1 [Bind].
5. Connect the battery to the receiver, the GREEN LED will flash, indicating into the [Bind] status. Select the RX, the
GREEN will keep lit, and the transmitter displays [Bind successful].
6. The transmitter exit [Bind], GREEN LED will keep lit, RED LED will be off, indicating Working normally.
TM
Overview
1-6CH
F / S
L E D
CH1
CH2
CH3
CH4
CH5
CH6
S.BUS IN
CH7
S.BUS OUT/CH8
G-RX8
T ELEMETRY
- +
AIN2
S.Port
R
G
B
8/24CH
1-6CH
F / S
L E D
CH1
CH2
CH3
CH4
CH5
CH6
S.BUS IN
CH7
S.BUS OUT/CH8
G-RX8
T ELEMETRY
- +
AIN2
S.Port
R
G
B
8/24CH
FrSky Electronic Co., Ltd. www.frsky-rc.com Contact us: [email protected]
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support: [email protected]
01140140
Version
1.0
Instruction Manual for FrSky ACCESS G-RX8
FrSky Electronic Co., Ltd. www.frsky-rc.com Contact us: [email protected]
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support: [email protected]
01140140
Version
1.0
Instruction Manual for FrSky ACCESS G-RX8

Range Check
A pre-flight range check should be done before each flying session. Reflections from nearby metal fences, concrete
buildings or trees can cause loss of signal
both during range check and during the flight. Under Range Check Mode, the RF power would be decreased and
Range distance to 1/30--1/10 that of Normal
Model, about 30 meters.
1. Place the model at least 60cm (two feet) above non-metal contaminated ground (e.g on a wooden bench) . The
receiver antenna should be in vertical position.
2. For Taranis X-Lite Pro as an example, turn on the radio and power on the receiver, go to MODEL SETUP/Internal
RF/Range.
3. For transmitter RF module, please refer to its manual.
Much more operation and instruction please refer to radio manual.
Failsafe
Failsafe is a useful feature which is for a preset channel output position whenever control signal is lost for a period.
Follow the steps to set Failsafe for channels necessary :
Failsafe for receiver supporting ACCESS can be set via radio interface, which support no pulse, hold and
customthree modes for each channel.
1. For Taranis X-Lite Pro as an example, turn on the transmitter, go to MODEL SETUP/Internal RF/Failsafe.
2. Failsafe can be set on receiver via short press F/S button while moving channel position to a preset value after
binding.
FrSky is continuously adding features and improvements to our products. To get the most from your product, please check
the download section of the FrSky website www.frsky-rc.com for the latest update firmware and manuals
FrSky Electronic Co., Ltd. www.frsky-rc.com Contact us: [email protected]
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support: [email protected]
01140140
Version
1.0
Instruction Manual for FrSky ACCESS G-RX8