Honeywell’s HDCD8TP 8-way bi-directional distribution unit gives the user the
capability of expanding the number of receivers (e.g., PTZ receivers) in a
system. The input to the HDCD8TP can be either an RS485 or RS232 (PC)
controller. Each output is capable of transmitting control data via daisy-chain
wiring to 32 RS485 units. There is an RS485 loop-through connection and RS485
termination links to enable several units to be connected in a daisy-chain
The unit can be used to extend the distance for controlling RS485 receivers.
If the required distance between RS232 or RS485 controller and the receiver is
greater than 4,000 feet, this unit can be installed to extend the distance to a
receiver an additional 4,000 feet.
This unit can also be used for applications that require a “star-wiring”
configuration. In a star wiring configuration, each output on the HDCD8TP is
connected to a single receiver. Multiple HDCD8TP units can be daisy-chain wired
together to provide the required number of outputs for each receiver in the
The HDCD8TP has three front panel LEDs indicators – one power indicator and
two data indicators – which designate the direction of transmission to or from