Grass Valley Adder II - Manual (Page 29)

25
Adder II
User Guide
Data Transport Module
The A2-DATA-8 I/O module allows you to add additional RS-485 serial data ports to your
Adder II. The ports can be added in groups of 8. Each A2-DATA-8 module uses 8 transmit
and 8 receive channels on the fiber multiplex (the same as the A2-AM8x8-0 bidirectional
analog audio module would use.) The baud rate is automatically set to match the data
source with a maximum data rate of 112 kbps.
Fig. 2-27: A2-DATA-8 module
For each port there are 232, 422 and GPI I/O connections, however you can use only one
data input at a given time. The input port automatically determines the incoming signal
type. When the input is a serial data signal, the corresponding output on the other Adder II
system appears on both the RS232 and RS422 pins of the data connector.
You can achieve GPI input trigger by either tying pin 1 to ground or pin 6 to V+ (CMOS, TTL,
nominally up to +12VDC). Inputs are protected from over-voltagesand input impedance is
5k.
A2-DATA-8 Pinouts
A2-DATA-8 module
Close up of ports on the A2-DATA-8 module
Pin Function
1 RS422 In-, GPI-
2 GPO Relay NC
3 Ground
4 RS232 Out
5 RS422 Out +
6 RS422 In+, GPI +, RS232 In
7 GPO Relay NO
8 GPO Relay Common
9 RS422 Out-
Shroud Ground