System overview
1.18 EST3 Installation and Service Manual
NETWORK
BA AB
IN
OUT
AUDIO
A IN
TB2
J5
NETWORK
BA AB
IN
OUT
AUDIO
A IN
TB2
J5
NETWORK
BA AB
IN
OUT
AUDIO
A IN
TB2
J5
NETWORK
BA AB
IN
OUT
AUDIO
A IN
TB2
J5
B1_CAB1 B1_CAB2 B1_CAB3 B1_CAB4
CPUCPUCPUCPU
Figure 1-11: Typical Class A network data riser wiring using copper wire
Download connections
Each programmable rail module has a modular phone jack to use
for downloading data directly from the SDU computer. The
modular phone jack on any CPU module can also be used to
download data to other programmable rail modules in the same
panel over the rail bus, or to other panels over the network data
riser.
In addition to the modular phone jack, the CPU module has two
serial communication ports that can be used to download data,
provided both of these conditions are met:
• A 3-RS232 option card is installed
• The serial port used to download data is not configured for
gateway or coder applications
Tip: To download data over the network without having to
reconfigure the system, temporarily install a 3-RS232 option
card on any CPU module in the system and connect the SDU
computer to serial port 1.