LBI-38962
25
CONNECTING THE HOST COMPUTERS TO THE EDG
IP HOST COMPUTER NETWORK CONNECTION
This is required only if your configuration includes IP hosts.
1)
Connect your Ethernet Transceiver to the EDG using the DB15 AUI Ethernet port on the rear of the EDG
electronics chassis.
2)
Connect your Ethernet Cable to your Ethernet Transceiver.
RDI HOST COMPUTER CONNECTION
This is required only if your configuration includes RDI hosts.
The EDG has sets of DB25 connectors located on a removable rear panel of the EDG electronics chassis. Each
set consists of four of these connectors mounted together vertically, with one set per TSI or HDI board. The set
associated with an HDI board is known as a host port set and is used for the serial interfaces to your host
computer equipment. Each host port set is located directly behind the HDI board providing the interface. The top
connector of a set is port 0 for the corresponding HDI board.
The table below shows the pins used on those connectors. The EDG serial interfaces are configured as a DCE
talking to a DTE. Only four signals are used. The EDG ignores the rest.
A TSI board has a connector set that is identical to that of an HDI.
However, the TSI connector set will already have cables connected to it.
NOTE
Pin Number
Signal Name
Direction
2
RxD
From the host
3
TxD
To the host
4
CTS*
To the host
5
RTS*
From the host
7
Signal Ground
N/A
RDI Host Computer Interface Connector