rf803d-alpha-sot rfsolutions.ltd, rf803d-alpha-sot Datasheet - Page 10

• Manufacturer Part Number: rf803d-alpha-sot
• Description: Alpha Encoder / Decoder Ic?s Rf803-alpha Easy To Use Telemetry System Using Alpha Modules
• Manufacturer: rfsolutions.ltd

D
D
S
S
8
8
0
0
3
3
-
-
A
A
L
L
P
P
H
H
A
A
-
-
1
1
ALPHA Encoder / Decoder IC’s
N
N
o
o
System and Functional operation
Pairing a Transmitter to a Receiver
Each transmitter is supplied a unique identity. Each time a switch is pressed, the transmitter
emits a highly secure RF signal with its identity embedded within. The Receiver can learn this
signal and allocate to an output.
Each transmitter input may be individually paired to each individual or combination of the
receiver’s outputs .This enables a powerful and flexible remote control system!
The only limitation is that each receiver has a maximum capacity of 50 pairings, these can be
from the same or any number of transmitters.
Hint: the same transmitter may be taught to any number of receivers to create ‘master keys’.
Learn Mode: Learn input activation is achieved by pulling this input to GND briefly
To learn a new transmitter switch follow this procedure (as application circuit)
Any Encoder input can be learnt to one or many of the receiver outputs.
Each input must be learnt to each output individually by following this procedure:
1. Select the receiver output to learn:
2. Operate whichever input on the encoder you want to learn to the selected decoder output.
3. The Learn LED will then illuminate, within 10secs, operate the same encoder input again.
4. The Learn LED will then flash to indicate learning is complete.
Erase Mode (As application circuit): is achieved by pulling this input to GND for >8 seconds.
This causes the internal EEPROM to be erased of all pre-learnt RF803E-ALPHA encoders.
During Erase the Learn LED will activate, it will extinguish when erase is complete.
Mom / Latch
This high impedance input is used to set the digital outputs to momentary or latched actions.
Pull up / Pull down required.
TX/TRX Mode:
The RF803-ALPHA Encoders and decoders can be set in TX mode or in TRX mode.
In TX Mode the RF803E-ALPHA and RF803D-ALPHA can be used with ALPHA-433TX and
ALPHA-433RX respectively. When an input is activated on the RF803E-ALPHA it is sent to the
RF803D-ALPHA where it is then mirrored on the output pins for an long as the signal is being
received.
When used in TRX mode the RF803E-ALPHA and RF803D-ALPHA must be used with ALPHA-
433TRX. In this scenario, all input state changes are acknowledged by the RF803D-ALPHA and
the RF803E-ALPHA outputs a momentary high on the ACK output.
v
v
‘
‘
0
0
9
9
a. Briefly operate the receiver Learn switch (SW1) once
b. The Learn LED will flash once to indicate that output 1 is selected
c. After the LED stops flashing, press the Learn switch again to select the next output
d. Repeat step c until the required output is selected.
channel
LKIN Status
HIGH
LOW
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Digital Outputs
Function
Momentary
Latching
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RF803-ALPHA