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System and Functional operation

Pairing a Transmitter to a Receiver

Each transmitter has a unique identity. Each time a switch is pressed, the transmitter emits a highly

secure RF signal. The Receiver can learn this signal and allocate to an output.

Any transmitter switch may be paired to one or many of the receiver’s outputs, or a transmitter

single switch may be paired to any number of receiver’s outputs to enable a powerful and flexible

remote control system.

The only limitation is that each receiver has a maximum capacity of 15 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:

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

channel

d. Repeat step c until the required output is selected.

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 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

LKIN Status

Digital Outputs

Function

Open

Latching

Closed

Momentary

Serial Data Output

The RF803D has a serial data output. This outputs the serial number, button and battery status of

the transmitter encoder (RF803E). This data may be fed directly to a microcontroller or RS232 type

driver circuit which may then be fed directly to a PC serial port.

Serial data is output initially and again every ½ second whilst data is being received from the

RF803E transmitter. i.e. this output is valid regardless of whether the RF803E encoder has been

learnt to the RF803D decoder or not. The serial data packet contains a learn bit to show if an

encoder input is learnt.