Futaba Corporation R304SB-24G User Manual

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Link Procedure
Each transmitter has an individually 
assigned, unique ID code. In order to start 
operation, the receiver must be linked 
with the ID code of the transmitter with 
which it is being paired. Once the link is 
made, the ID code is stored in the receiver 
and no further linking is necessary unless 
the receiver is to be used with another 
transmitter. 
1
P l a c e  t h e  t r a n s m i t t e r  a n d  t h e 
receiver close to each other within 
half (0.5) meter.
2
Place the transmitter into the linking 
mode, and turn on the receiver.
3
During countdown, push the receiver  
tact switch for approximately 2 
seconds. The LED will begin to blink 
red. After the receiver LED switches 
from blinking red to green → red 
steady light,  If the transmitter and 
receiver are linked normally, set the 
power switch to the OFF position 
and then return it to the PWR ON 
position. If the receiver LED lights 
gr e e n ,  l i n k i n g  wa s  s u c c e s s f u l . 
Actually check servo operation.
*Please refer to the table below for 
LED status and receiver condition.
*Refer to the transmitters operation 
manual for complete details on how to 
place the transmitter into the linking 
mode.
*If there are many T-FHSS systems 
turned on in close proximity, your 
r e c e i v e r  m i g h t  h a v e  d i f f i c u l t y 
establishing a link to your transmitter.  
This is a rare occurrence.  However, 
should another T-FHSS transmitter/
receiver be linking at the same time, 
your receiver could link to the wrong 
transmitter.  This is very dangerous 
if you do not notice this situation. In 
order to avoid the problem,we strongly 
recommend you to double check 
whether your receiver is really under 
control by your transmitter. 
WARNING
After the linking is done, please cycle receiver power and check if the 
receiver to be linked is really under the control by the transmitter to be linked.
Do not perform the linking procedure with motor's main wire connected or 
with the engine operating as it may result in serious injury.
Link switch
LED
S.BUS2 / (Battery)
CH output 
(1 to 4) / (Battery)
Operating Precautions:
O n c e   t h e  
R 3 0 4 S B
  d e t e c t s   t h e 
T-FHSS normal mode
 or 
T-FHSS high 
speed mode
, the detected mode is 
locked as long as the power is ON. 
When need to change the mode, 
please cycle power.
Note:
The R304SB is compatible with the T-FHSS system 
transmitters.
The receiver type setting of the transmitter is set in T-FHSS.
*Futaba T-FHSS system does not work with current Futaba S-FHSS/FHSS/FASST-
est/FASST system. 
Usage condition on "High Speed mode"
CAUTION
When using the high-speed mode, use a Futaba digital servo (including 
brushless servo). Analog servos cannot be used.
s
1M23N28502
T-FHSS-2.4GHz System
S . B U S 2 ,  4 - C h a n n e l 
Receiver for Model Car
T h a n k  y o u  f o r  p u r c h a s i n g  t h e  R 3 0 4 S B
receiver. The R304SB is designed for use with 
the Futaba T-FHSS system transmitter. 
The  R304SB receiver has adopted the newly 
developed bidirectional communication 
system "T-FHSS".
R304SB
WARNING
NEVER
 use dry batteries for 
the power supply of the R304SB
as this may cause difficulties with 
the receiver's operation.
W r a p   t h e   r e c e i v e r   w i t h 
something soft,such as foam 
rubber,to avoid vibration. Do not 
splash water over the receiver.
Since the receiver generates a 
certain amount of heat, install 
the place with good ventilation.
No signal recep-
tion
LED: Red
Receiving signals
LED: Green
Unrecover-
able failure 
(EEPROM,etc.)
LED: Red 
and Green 
turn on alter-
nately
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