AEQ DIGITAL COMMENTARY UNIT Customer's Manual page 75

4.2.1 CCU wiring
It is necessary for each CCU to be configured with an address number so that
they can communicate with the control computer. Addresses from 0 to 31 are
selectable and are set by the individual dip switches as detailed in section
3.4.3 in the CUSTOMER' S MANUAL.
RS-485 control port: This is a bus type control cable made by a simple pair of
wires. Care must be taken to maintain the correct signal polarity (V+ and V-).
This connection simply arranges all the CCUs in parallel. The use of a shielded
twisted pair is recommended, but a simple pair of wires will work well in most
cases. The Input connector accepts direct wiring, so no special connectors are
required for this purpose.
4.2.2 Control computer wiring
Each unit is fitted with a female DB 9 chassis mounted connector for
configuration by an external computer communicating through RS-232 protocol.
The active pins are as follows:
RX 2
TX 3
GND 5
RTS 7
The pin-out of the wire that connects the computer with the CCU is the
following :
CCU : DB-9 MALE
2 -------------------------------------- 2
3 -------------------------------------- 3
5 -------------------------------------- 5
7 -------------------------------------- 7
CCU : DB-9 MALE
2 -------------------------------------- 3
3 -------------------------------------- 2
5 -------------------------------------- 7
7 -------------------------------------- 4
PC : DB-9 FEMALE
PC : DB-25 FEMALE
Digital Commentary System
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