Futaba R7108SB FASSTest-2.4GHz Bidirectional Communication System Instruction Manual

R7108SB FASSTest-2.4GHz Bidirectional Communication System
Instruction Manual

Thank you for purchasing a Futaba R7108SB FASSTest-2.4GHz compatible receiver. The R7108SB receiver features bi-directional communication with a FASSTest Futaba transmitter using the S.BUS2 port. Using the S.BUS2 port an impressive array of telemetry sensors may be utilized. It also includes both standard PWM output ports (1-8ch) and S.BUS output ports. The R7108SB can also be switched to the FASST(Multi-ch/7-ch) System.

● Applicable systems: Futaba FASSTest-2.4GHz / FASST (Multi-ch,7ch) -2.4GHz system transmitter

Usage precaution

• Analog servos cannot be used with the R7108SB in the FASSTest 12CH / FASST High-speed mode.
• Don’t connect to Extra Voltage before turning on a receiver.

WARNING

Changes or modifications not approved by the party responsible for compliance could void the user’s authority to operate the equipment.
The R7108SB receiver should be protected from vibration by foam rubber, Velcro, or similar mounting methods. Protect from moisture.
Keep away from conductive materials to avoid short circuits.

Antenna installation precaution

Do not cut or bundle the receiver antenna wire.
Do not bend the coaxial cable. It causes damage.
The antennas must be mounted in such a way to assure they are strain relieved.
Keep the antenna as far away from the motor, ESC, and other noise sources as you possibly can.
Do not touch the antenna with metal, carbon, or other conductive material.
Be sure that the two antennas are placed at 90 degrees to each other.

• The R7108SB has two antennas. In order to maximize signal reception and promote safe modeling, Futaba has adopted a diverse antenna system.
  This allows the receiver to obtain RF signals on both antennas and fly problem-free.

Antenna installation for carbon fuselage

You must leave 30mm at the tip of the antenna fully exposed. The exposed antenna should be secured so that it cannot move around or back inside of your aircraft.

Be careful of connector insertion

Don’t connect an S.BUS servo/gyro to an S.BUS2 connector.

Link precaution

Do not perform the linking procedure while the motor’s main power is connected or the engine is operating as it may result in serious injury.
When the linking is complete, please cycle the receiver power and ensure the receiver is properly linked to the transmitter.
Please power up your system in this order: Transmitter first, followed by the receiver.
If the R7108SB receiver was previously linked to another transmitter, make sure that the transmitter is not operating while linking the receiver to the new transmitter.

Connector precaution

Don’t connect a connector, as shown in a before figure.

• It will short-circuit if it is connected in this way. A short circuit across the battery terminals may cause abnormal heating, fire, and burns

LED Indication

later → Red Blink
（1second）
FASST| No signal reception| Red Solid
Receiving signals| Green Solid
Receiving signals but ID is unmatched| Green Blink
Waiting for link| Red Blink
FASSTest
FASST| Unrecoverable error (EEPROM, etc.)| Alternate blink

R7108SB Specifications

FASSTest-2.4 GHz system(18 ch/12 ch mode)
FASST-2.4 GHz system (Multi-ch/7 ch mode)
S.BUS2 and S.BUS port and 8 channels for conventional system receiver

• Dual antenna diversity
• Size: 0.98 x 1.86 x 0.56 in. (24.9 x 47.3 x 14.3 mm)
• Weight: 0.42 oz. (12.0 g)
• Power requirement: 3.7 V to 7.4 V(Voltage range: 3.5 V to 8.4 V)
• Battery F/S Voltage: FASSTest—It sets up with a transmitter FASST—3.8 V
• Extra Voltage port: 0 ～70 V DC

When on “FASST-7ch” mode, the fail-safe function can be set for 3-channel only.
Be sure that when using ESCs regulated output the capacity of the ESC must meet your usage condition.
*Never use dry batteries for the power supply of the R7108SB as they may cause difficulties.

Compliance Information Statement (for Canada)

This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and  (2) this device must accept any interference, including interference that may cause undesired operation of the device. This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator & your body.

Compliance Information Statement (for the U.S.A.)

This device, trade name Futaba Corporation, model number R7108SB, complies with part15 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.
CAUTION: To assure continued FCC compliance

1. Any changes or modifications not expressly approved by the grantee of this device could void the user’s authority to operate the equipment.
2. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.

This equipment should be installed and operated with a minimum distance of 20cm between the radiator & your body.
The responsible party for this device compliance is:
FUTABA Corporation of America
2681 Wall Triana Hwy Huntsville, AL 35824, U.S.A.
Phone:1-256-461-9399
FAX:1-256-461-1059 E-mail: service@futabaUSA.com

Declaration of Conformity (for EU)

Hereby, Futaba Corporation declares that the radio equipment type is R7108SB in compliance with Directive 2014/53/ EU. The full text of the EU declaration of conformity is available at the following internet address:
http://www.rc.futaba.co.jp/english/dl/declarations.html

Channel Modes

The R7108SB is capable of changing its channel allocations as described in the table below. This is especially important when using the receiver in a dual receiver mode. See your transmitter operation manual for complete details on operating in the dual receiver mode.

1. Turn on the receiver. [Transmitter is always OFF]

2. Press and hold the Link/Mode button for 5 seconds to 10 seconds.

3. When the LED of the receiver changes from blinking red to blinking red with green, the Link/Mode button is released.

4. The LED should now blink red two times in the patterns described in the chart below.

5. Each press of the Link/Mode button advances the receiver to the next mode.

6. When you reach the mode that you wish to operate in, press and hold the Link/Mode button for more than 2 seconds.
   When LED blinks in green with red, it is the completion of a mode change, Link/Mode button is released.

7. Please cycle the receiver power off and back on again after changing the Channel mode.

R7108SB CH Mode table

Output
connector| Channel
---|---
Mode A
1 ～ 8CH| Mode B
1 ～ 7CH| Mode C
9 ～ 16CH| Mode D
9 ～ 15CH
1| 1| 1| 9| 9
2| 2| 2| 10| 10
3| 3| 3| 11| 11
4| 4| 4| 12| 12
5| 5| 5| 13| 13
6| 6| 6| 14| 14
7/B| 7| 7| 15| 15
8/SB| 8| S.BUS| 16| S.BUS
Red LED blink| 1 time| 2 times| 3 times| 4 times

Systems (FASSTest ⇔ FASST) change method

1. Turn on the receiver. [Transmitter is always OFF]

2. Press and hold the Link/Mode button for 10 seconds to 15 seconds.

3. When the LED begins to blink green the button may be released.

4. The LED should now be blinking green in one of the patterns described by the chart below. ( Default: FASSTest )

5. Each press of the Link/Mode button advances the receiver to the next system.

6. When you reach the system that you wish to operate in, press and hold the Link/Mode button for more than 2 seconds.
   When the LED blinks green and red, the system change is complete. Release the Link/Mode button.

7. Please cycle the receiver power off and back on again after changing the system.

R7108SB System table

Green LED
blink| System
---|---
1 time| FASSTest Default
2 times| FASST Multi-ch Normal mode
3 times| FASST Multi-ch High-speed mode
4 times| FASST 7ch Normal mode
5 times| FASST 7ch High-speed mode

*FASST mode cannot use telemetry functions.

FASSTest

FASSTest is a bidirectional communication system between the R7108SB receiver and FASSTest capable transmitters.
Multiple optional telemetry sensors may be connected to the S.BUS2 on the receiver and that data is in turn displayed on the transmitter.

Link to the transmitter: FASSTest

1. Bring the transmitter and the receiver close to each other, within 20 inches (half a meter).
2. Turn on the transmitter. Place the transmitter into the receiver linking mode.
3. Turn on the receiver.
4. The receiver will wait for the linking process to begin for 2 seconds. Following that it will return to the normal operation mode.
5. When the LED of the receiver changes from blinking red to solid green, linking is complete.
   (A link waiting state is ended in 1 second.)
   • Refer to the transmitter’s operation manual for complete details on how to place the transmitter into the linking mode.
   • If there are many FASSTest systems turned on in close proximity, your receiver might have difficulty establishing a link to your transmitter.
   This is a rare occurrence. However, should another FASSTest transmitter/receiver be linking at the same time, your receiver could link to the wrong transmitter. This is very dangerous if not noticed. To avoid the problem, we strongly recommend that you double-check whether your receiver is really under control by your transmitter.
   • If the System Type of the transmitter is changed, the receiver will need to be re-linked to the transmitter.

S.BUS2

S.BUS2 extends S.BUS and supports bidirectional communication.
Sensors are connected to the S.BUS2 port.

Link to the TMA-1 Telemetry Adapter

1. R7108SB has to be FASSTest.

2. First, a transmitter and a receiver are linked.

3. The transmitter is turned off.

4. Press and hold the Link/Mode button of R7108SB for 15 seconds.

5. After the R7108SB LED lights in this sequence, Red Blink — Red with Green
   Blink — Green Blink — Red Blink, release the Link/Mode button.

6. When in link mode with the R7108SB, the TMA-1 LED blinks green along with the red LED of the receiver.

7. Push the TMA-1 link button as long as necessary for its LED to blink.

8. Completion of a link will change the LED of TMA-1 green from red only for a moment.

9. Please cycle the receiver power.

FASST

R7108SB also can use the FASST-Multi/7ch mode. The FASST mode does not support the telemetry functions. The FASST system has a normal mode and a high-speed mode.  However, in the High-speed mode, analog servos cannot be used.

Link to the transmitter: FASST

1. Bring the transmitter and the receiver close to each other, within 20 inches (half a meter).
2. Turn on the transmitter and receiver.
3. Link operation is performed by the Link/Mode switch.
   • When using the TM-8 module, it’s possible to set the F/S position (only 3CH).

*Refer to the instruction manual of the transmitter or module used for a description of the linking operation, F/S position setting methods, and other details.

FUTABA CORPORATION
Hobby Radio Control Business Center Sales & Marketing Department
1080 Yabutsuka, Chosei-mura, Chisei-gun, Chiba-ken, 299-4395, Japan
TEL: +81-475-32-6051, FAX: +81-475-32-2915

References

• サポート 取扱説明書ダウンロード | 双葉電子工業株式会社 ラジオコントロール

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