KAVAN R6L - User manual
Introduction
Congratulations on your purchase of the KAVAN R6L, a 6-channel telemetry receiver. It operates on ACCESS transmission system and has 6 high-precision PWM channels and 16 or 24-channel modes using S.BUS. Thanks to its compact size and light weight, it is especially suitable for small models and low-profile compartments, but you can use it for a variety of other models as well. With redundancy support, it can be connected as a primary receiver via S.BUS. Thanks to the F.BUS connection option, you can also pair it quickly and easily to several different telemetry devices.
It features advanced interference suppression for reliable stable signal transmission across the entire range. Smart Match system speeds up pairing. The black box function stores essential flight data. Receiver operating statuses are indicated by an LED indicator. Smart pairing allows firmware updates wirelessly.
It is also available in a Stabi version, which provides more accurate and faster measurement and transmission of altitude and vertical speed data. It also allows instant audio feedback from the variometer to the ACCESS transmitters.
If you have any questions about the R6 receiver and its operation, please contact the technical support and service staff at KAVAN Europe s.r.o. by e-mail (info@kavanrc.com for general technical information, servis@kavanrc.com for service) or by phone (+420 466 260 133 for general technical information, +420 463 358 700 for service), during business hours 8 am–4 pm, Monday–Friday).
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| KAV18.10006L KAVAN R6L | KAV18.10006SL KAVAN R6L Stabi |
Firmware
Technical specifications
- Dimensions: 45×18.5×9.7 mm (L×W×H)
- Weight: 5.6 g
- Number of channels: 6 PWM channels + 16/24 channel mode via S.BUS
- Operating voltage range: 3.5–10 V
- Operating current: <65 mA at 5 V
- Operating range: >2 km (depends on ambient conditions)
- Vario - vertical speed measurement range: ±10 m/s (R6L Stabi)
- Vario - altimeter range and resolution: -700 m to 10,000 m, 0.1 m (R6L Stabi)
- External voltage measurement range via AIN2: 0–35 V (battery voltage divider ratio: 1:10)
- Operating range: 2 km (full range, may vary depending on actual ambient conditions)
- Antenna connector: IPEX1
- Max. radiated power: < 20 dBm
- Operating frequency: 2.400–2.4835 GHz
- Compatibility: 2.4GHz ACCESS transmitters
Features
- Enhanced anti-RF-interference capability with more solid RF performance
- Smart pairing in the ACCESS mode
- Built-in stabilisation functions (R6L Stabi)
- Built-in high-precision telemetry sensor (R6L Stabi)
- 6 High-precision PWM Channel Ports
- SBUS Out Port (supports 16/24CH mode)
- SBUS In Port (supports signal redundancy)
- Full control range with telemetry (FBUS/F.Port/S.Port)
- Over-The-Air (OTA) firmware updates
- External battery/device voltage detection
LED indicator
| Green | Red | Status |
|---|---|---|
| On | On | Registration |
| Blinking | Blinking | Registration complete |
| On | On | Pairing |
| On | Off | Pairing complete |
| On | Off | Working properly |
| Off | On | Fail-safe mode |
| Blue | Status (calibration) |
|---|---|
| On | Limits exceeded (0.9–1.1G) |
| Off | Normal operation |
| Blinking | Calibration complete |
Registration and pairing
Before you can start using your receiver, you must first register it:
- Turn on the internal module of your transmitter.
- Power on the receiver while holding the pairing button pressed. The red and green LED indicators are on, indicating the [Reg] status.
- Once RID, RX name and UID are shown, press [Register]. The red and green LED indicators are blinking.
- Power off the receiver.
After registration, commence the pairing:
- Select an empty receiver slot and press [Bind].
- Power on the receiver.
- Once the receiver is shown on the display, select it. The green LED indicator is on.
- The pairing process is confirmed by a [Bind successful] message in the transmitter.
Stabilisation functions (R6L Stabi)
Configuration
ETHOS V1.6.1 (or later version) is required.
Stabilizer Config V3.0.10 (or later version) is required.
- Ensure stabilisation is enabled & Complete the 6-axis calibration for the gyroscope
- Servo connection & Build the stabilisation device for the model
- Set up the mixer channels and input controls
- Determine the [Wing Type] & [Mounting Type]
- Gain and Offset settings for stabilised flight modes
- Stabilised channel output checks in Auto-Level mode
- Radio stick control checks in Manual mode
- Calibration (Level, Stick Center & Range) for Stab Group 1 & 2
- Angle Mode - Roll/Pitch Degree Configuration (Optional)
Gyroscope calibration
[Device Config] → [Receivers] → [Stabilizer Config] → [Stabilizer Group / Configuration] → [Stabilizer / On]
Step 1: Ensure the Stabiliser is turned ON for both Stabilizer Groups 1 and 2.
[Device Config] → [Receivers] → [Stabilizer Config] → [6-axis calibration / Open]
Step 2: Complete the 6-axis calibration for the gyroscope.
The gyroscope of the device (6 surfaces) must be calibrated before mounting it into the model. Place the device on a flat surface and follow the steps to finish the calibration.
Once the calibration of all the device surfaces is complete, the accelerator telemetry values of each axis (AccX, AccY and AccZ) are about 1.000 gravity while the device is placed in the corresponding direction. The deviation is ±0.1.
Servo connection
Connect each control function of your aircraft to the stabilised receiver ports according to the table below.
| Channel | Control | Function |
|---|---|---|
| CH1 | AIL 1 | Aileron |
| CH2 | ELE 1 | Elevator |
| CH3 | THR | Throttle |
| CH4 | RUD | Rudder |
| CH5 | AIL 2 | Aileron |
| CH6 | ELE 2 | Elevator |
| CH7 | AIL 3 | Aileron |
| CH8 | ELE 3 | Elevator |
| CH10 | AIL 4 | Aileron |
| CH11 | ELE 4 | Elevator |
| CH12 | User-defined | / |
| CH13 | User-defined | Gyro gain |
| CH14+CH15 | User-defined | Flight modes |
CH3 Gyro gain: When the the CH13 value is in the centre, the gain is zero. The gain increases with the value, reaching the maximum when the value is ±100.
Mixer settings
In the Mixer setting of your radio, map the correct control functions to each channel. Channels 13–15 are to be bound with the switches of your choice.
Wing types
Choose the corresponding wing configuration of your model. Select the mounting type according to the actual placement of your receiver in the fuselage.
Wing Type → [Normal / Delta / VTail]
Mounting Type → [Horizontal / Horizontal reverse / Vertical / Vertical reverse]
Gain and Offset
Set the stabiliser gain and offset for each flight mode.
Gain: determines how aggressively the gyroscope reacts to the external forces to keep the aircraft stable.
- Stab - Fully stabilised mode
- Auto - Auto-Level mode
- Hover - Hovering Mode
- Knife - Knife's edge Mode
Angle offset: acts as a gyro trim and is used to compensate for the level-flight angle according to the fuselage or wings' incidence.
- Auto - Auto-Level Mode
- Hover - Hover Mode
- Knife - Knife Mode
Output checks
To ensure flight safety, it is strongly recommended to check the movement directions of all stabilised channel outputs. Activating Auto-Level mode will cause significant deflection on the stabilised AIL and ELE channels, allowing you to verify the responses of the aileron and elevator. Similarly, activating Knife-Edge and Hover modes will result in the same response on the rudder.
Perform Roll Control Operations
When the plane turns left or right along the roll axis, ailerons should have the correcting actions as illustrated.
Perform Yaw Control Operations
When the plane spins left or right along the yaw axis, rudders should have the correcting actions as illustrated. g. Radio stick control check in Manual mode
Perform Pitch Control Operations
When the plane rotates up or down along the pitch axis, elevators should have the correcting actions as illustrated.
Check whether the servo movement corresponds to the control actions in the [Auto-Level] mode. If not, try inverting the corresponding channel output in the [Stabilizer config] tool.
Stick control
[ETHOS] → [Model] → [Outputs] Check whether the servo movement corresponds to the stick movements in the [Manual] mode. If not, try inverting the corresponding channel output by pressing the channel bar in the [Output] tool.
Calibration
[ETHOS] → [System] → [Device Config] → [Receivers] → [Stabilizer Config] → [Stabilizer group 1/2] → [Calibration]
Level calibration
Place the model in a level position and press OK to continue.
Stick centre calibration
Set both sticks to the neutral (centre) position and press OK to continue.
Stick range calibration
Move the sticks to their limits on each axis to calibrate.
Angle mode
Quick mode (R6L Stabi)
[ETHOS] → [System] → [Device Config] → [Receivers] → [Stabilizer Config] → [Stabilizer group 1/2] → [Configuration] → [Quick Mode]
The stabilisation quick mode is enabled by default, and allows control of the stabilisation modes using the CH14 (a single 3-position switch). CH15 is disabled in quick mode, so the Knife's edge and Hover modes aren't included.
| Channel | Position | Flight mode |
|---|---|---|
| CH14 | Switch UP | None |
| Switch MIDDLE | Fully stabilised mode | |
| Switch DOWN | Auto-level mode |
Reduced telemetry power mode
[ETHOS] → [Model] → [Internal/External Module] → [Receiver (Model)]
Reduced telemetry power mode decreases the power of telemetry transmission from 100 mW to 25 mW. Enable this mode in case your control functions are subjected to the RF interference.
Navigate to the receiver [Options] and switch ON the Reduced telemetry power (25mW) to activate.
High PWM Speed
[ETHOS] → [Model] → [Internal/External Module] → [Receiver (Model)]
The High PWM speed mode is OFF by default. Navigate to the receiver [Options] and switch ON the High PWM speed mode to activate.
Altitude / VSpeed (Vertical Speed) (R6L Stabi)
- Pair a receiver with the built-in variometer sensor with the transmitter.
- Enter [Model] menu and open the [Telemetry] menu.
- Discover new sensors, and the item [Altitude] should be flashing in the menu.
- Hold the [Altitude] item to expand the [Edit] menu.
- The telemetry data of the variometer, such as [Range] and [Unit], can be set now.
Switching the S.Port / F.Port / FBUS
Navigate to the Receiver settings. Expand the Telemetry port options and select the S.Port/F.Port/FBUS.
Switching the 16 / 24 SBUS mode
Navigate to the Receiver settings. Expand the SBUS options and select the SBUS-16 or SBUS-24 mode.
OTA ("Over The Air") firmware update
Navigate to [File Manager] and select the firmware file. Press the enter button and select [Flash RX by int.OTA]. Power on the receiver, select RX and confirm by pressing [ENTER]. Complete the flash process and the transmitter will display [Success]. Wait for 3 seconds for the receiver to start working properly.
Do not perform the Pairing/Registration close by during the firmware update.
Only update the receiver after it is registered (OTA).
Range check
A range check should be performed before each flight in case a loss of signal is caused by reflection from metal or concrete structures, and the blocking of the signal by buildings or trees during flight.
- Place the model at least 60 cm on a non-metallic support (such as a wooden bench). The receiving antenna should be in a vertical position.
- In the operating system, navigate to "RF system", select the "RANGE" mode and press [ENTER]. In the range check mode, the effective range will be reduced to 1/30.
Fail-safe emergency rates
When Fail-safe is turned on, 3 modes are available: No signal, Hold, Custom.
No signal: When the signal is lost, the receiver does not send a control signal to rates on any channel. To use this mode, select it from the menu and wait 9 seconds for the Fail-safe setting change to take effect.
Hold: The receiver keeps the rates as they were before the signal was lost. To use this type, select it from the menu and wait 9 seconds for the Fail-safe setting change to take effect.
Custom: The receiver keeps the rate values on all channels as you preselect them. Select the Fail-safe setting menu. Switch from Disconnect/Hold/Not Set to "Custom". Select the channel for which you want to set fail-safe rates and confirm the selection. Then set the rates on each desired channel and confirm the selection. Wait 9 seconds for the Fail-safe setting change to take effect.
Warranty and post-warranty service
All KAVAN® receivers are covered by an extended 3-year warranty covering all manufacturing defects and faults. When claiming within the warranty period, please always present a copy of the proof of purchase with the product and provide the service personnel with as detailed and complete information as possible about the defect found, your usage and other information that will facilitate the assessment of the claim and speed up its settlement. Please make your claim at the shop where you purchased the product. If this is not possible, you can contact KAVAN Europe s.r.o. directly:
KAVAN Europe s.r.o. | Doubravice 110, 533 53 Pardubice | Czech Republic | +420 466 260 133 | info@kavanrc.com
Warranty and limitation of liability
As the manufacturer of this product, we have no control over your compliance with these instructions when wiring and installing the receiver into your model. Likewise, we have no control over how you build, operate and maintain the parts of the receiver. For this reason, KAVAN must disclaim all liability for any loss, damage or financial cost that is caused by the improper use or operation of products imported by us, or that is in any way connected with such activity.
Except as otherwise provided by law, KAVAN's obligation to pay compensation shall (regardless of the legal arguments asserted) be limited to the purchase price for those KAVAN products that were directly involved in the event that caused the damage. This does not apply if the manufacturer has been judicially obliged to make unlimited compensation on the basis of proven wilful or reckless negligence. We warrant that our products are in compliance with current legal provisions. The warranty does not cover failures and defects caused by:
- Misuse or improper use.
- Delayed, improper or no maintenance, or maintenance performed by an unauthorised service.
- Incorrect wiring.
- Use of accessories not approved or recommended by KAVAN Europe s.r.o.
- Modifications or repairs not carried out by an authorised KAVAN Europe s.r.o.
- Inadvertent or deliberate damage.
- Normal wear and tear.
- Operation of the equipment outside the operating limits specified in the specification
KAVAN Europe s.r.o. warrants that this product is free from defects in both material and workmanship at the time of sale. KAVAN Europe s.r.o. also reserves the right to change or modify this warranty without notice. The equipment is subject to continuous improvement and refinement - the manufacturer reserves the right to change the design without notice.
This warranty certificate entitles you to a free warranty repair of the product supplied by KAVAN Europe s.r.o. within a period of 24 months. The warranty does not cover natural wear and tear due to normal use, as this is a product for modelling use, where the individual parts operate under much higher loads than normal toys are subjected to.
The warranty also does not cover any part of the equipment that has been improperly installed, roughly or improperly handled, or damaged in an accident, or any part of the equipment that has been repaired or altered by an unauthorised person (this includes the application of any waterproof sprays/coatings by the user). Like other fine electronics products, do not expose this equipment to high temperatures, low temperatures, moisture, dusty environments, violent mechanical shocks and impacts. Do not leave it in direct sunlight for extended periods of time.
Recycling (European Union)
Electrical equipment bearing the crossed-out bin symbol must not be disposed of in normal household waste but must instead be taken to a specialised collection and recycling facility. In EU (European Union) countries, electrical equipment must not be disposed of in normal household waste (WEEE - Waste of Electrical and Electronic Equipment, Directive 2012/19/EU). You can take unwanted equipment to your nearest collection or recycling centre. The equipment will then be disposed of or recycled safely, free of charge. By handing in your unwanted equipment, you can make an important contribution to protecting the environment.
EU declaration of conformity
KAVAN Europe s.r.o. hereby declares that the radio equipment type: R6L (Stabi) and other equipment supplied with it comply with Directive 2014/53/EU. The full form of the EU Declaration of Conformity is available at the following website: http://www.kavanrc.com/doc. This 2.4GHz radio equipment can be used without prior registration or individual approval in all countries of the European Union.