Theory of Operation
The two transceiver evaluation boards are identical, but they are populated
slightly differently. The MT Series transcoder is both an encoder and a
decoder, with the input or output nature of each line being determined
by how the board is populated. One board will have buttons S0 and S1
populated, making those lines inputs. On the other board, those lines
will be connected to the buzzer and LED, respectively. Conversely, the
first board will have lines D2 and D3 connected to the buzzer and LED,
while the second board has buttons S2 and S3 populated. This allows for
bidirectional remote control. To use the kit, simply attach the antennas, turn
on the power, and press one or both of the buttons on a board. When S0
or S2 is pressed, the buzzer will sound; when S1 or S3 is pressed, the LED
will turn on.
Both boards have a confirmation LED. When one transcoder sends a
command to the second transcoder, the second transcoder will send a
confirmation back to the first transcoder indicating that the command was
received and the action performed. When the first transcoder receives the
confirmation, it will turn on the CONFIRM LED to indicate this. This feature
offers the ability to range test without needing to be in visual or hearing
range of both boards.
The MT Series Transcoder Data Guide goes into the many features of the
transcoders in detail, but this is the only set-up required for operation of
this kit.
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