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Chapter 6 — SDI ports
Introduction
Small System Controller (SSC) card
This chapter describes the SDI ports on the Meridian 1 Option 11C Compact
system. Serial Data Interface (SDI) ports are used to connect devices such as
terminals and modems to the Option 11C Compact. The two types of SDI
ports supported are:
•
Data Terminal Equipment (DTE); typically a TTY or computer
and
•
Data Communication Equipment (DCE); typically a modem
Note: Both DTE and DCE ports adhere to either RS232 or RS422
communication standards.
SDI ports are found on the NTMW01 SSC card with an additional port
located on the Fiber Receiver card in the expansion cabinet.
The NTMW01 SSC card is equipped with three SDI ports.
Each port can be used to connect a modem or terminal to the system. If
connection to a terminal is required, an A0378652 connector adapter (NULL
modem without hardware handshaking) is needed.
The SDI port connector is located at the bottom rear of the cabinet (An
NTBK48 three-port cable is required to connect to system equipment.)
The Baud rate for port 0 is selected by setting switches on the faceplate of the
NTMW01 System Core card. Baud rates for ports 1 and 2 are set using
overlay programs.
Meridian 1 Option 11C Compact
Page 49 of 136
Technical Reference Guide
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