copy and will lose the ability to create a key and send a copy. It can only
set Control Permissions until its memory is erased, at which point it will
regain full functionality.
The two decoders will need to be connected together with some method
of transferring asynchronous serial data, such as a wire or short-range
infrared. RF is not recommended for this transfer because it can represent
a security risk, since RF will broadcast in all directions. A wire is the most
secure method of transfer. Simply connect the KEY_OUT of the originating
decoder to the COPY_IN line of the receiving decoder and connect the
COPY_IN of the originating decoder to the KEY_OUT of the receiving
decoder. Then connect the ground lines together and send the data (refer
to Figure 18).
The Send Copy feature can be disabled by setting the SEND_COPY and
CREATE_KEY lines high when the decoder is powered on. The MODE_IND
line will blink three times to indicate that this has taken place. The decoder
will not be able to send a copy of its User Data again until its memory is
cleared.
Get Copy Mode
Get Copy Mode is entered when valid data is present on the COPY_IN
line. The decoder will read the User Data from another decoder and save
it in non-volatile memory. If the decoder is made into a copy of another
decoder, it will not have the ability to send the copy or to create new keys.
All of the User Data will need to be erased before the decoder can create
new keys. This is done by holding the LEARN line high for ten seconds.
– 18 –