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3.3.6 SWITCHING CONTROL VIA THE OPTIONS PORT
The OPTIONS port allows an external serial input, typically from a computer, to control the selection of the various channels. You can
use either an optional serial cable or alternatively construct a custom cable to link the Freedom II switch and the computer. For pin-
out details of the custom cable, see Appendix A.
Upon receipt of the correct code, the Freedom II will switch immediately to the appropriate channel.
3.3.6.1 CONNECTING A COMPUTER FOR REMOTE CONTROL
The cable link from the computer needs to connect the transmit (TXD) line of the computer to the receive (RXD) input of the Freedom
II and also link the ground terminals (GND) of the two devices. See Appendix A for details.
1 Use an optional serial cable to link the OPTIONS port on the rear panel of the Freedom II switch and a vacant serial port on the
computer.
î Note: If the optional Freedom LED Monitor module is used with the Freedom II, connect the computer instead to the TO KEYPAD
OR PC port on the Freedom LED Monitor module.
IMPORTANT: Do not connect
the OPTIONS port to any
network.
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