User guide

ConÞguration 3-3

Connecting an ANSI Terminal

You can connect an ANSI-based VT100 compatible terminal to the Comm Port either

directly, through a Digital Link Management Access Processor (MAP) in ASCII mode,

terminal server, or a modem.

The DSU/CSU Comm Port (DC-9 connector), on the back panel, is compatible with

ANSI-based VT100-compatible terminals or terminal emulation programs supporting

this format.

If the Comm Port baud rate is 9600, the distance between the terminal and the

DSU/CSU cannot exceed 50 feet.

To connect a terminal to the DSU/CSU Comm Port:

1. Use a 9-pin RS-232 straight ribbon cable to connect the male 9-pin

connector into the DB-9 female connector of the DSU/CSU.

2. Connect the opposite end of the cable to the DB-9 connector of the

terminal.

NOTE: A proprietary collision avoidance algorithm between the DSUs using the CTS line

enables communication from a single Comm Port with any DSU on the network. Pin 8 (CTS)

on the female connector should not be connected to Pin 8 on the male connector. If your cable

is not supplied by Digital Link, be sure pin 8 is not connected at the connector’s terminal end.

Refer to Table B-7 on page B-6.