232MDS3 0812-1/1
© 2002 by B&B Electronics. All rights reserved.
www.bb-elec.com orders@bb-elec.com support@bb-elec.com
International Office: 707 Dayton Road PO Box 1040 Ottawa, IL 61350 USA 815-433-5100 Fax 433-
5104
European Office: Westlink Commercial Park Oranmore Co. Galway Ireland +353 91 792444 Fax +353 91 792445
PRODUCT INFORMATION B&B ELECTRONICS
Model: 232MDS3
Modem Data Splitter
Overview
The Modem Data Splitter can be connected so that
three computers or terminals can use one modem without
manual switching. The Modem Data Splitter can be used to
combine three DTE ports to a DCE port.
All signals entering the female DTE connectors on pin
2 (Transmit Data), 4 (Request To Send), and 20 (Data
Terminal Ready) are diode OR'd together and appear as
outputs on the male DCE connector. Pins 3 (Receive Data), 5
(Clear To Send), 6 (Data Set Ready), and 8 (Carrier Detect)
are normally outputs from a DCE port, so they are connected
directly from the male to all female connectors. Can be left
permanently installed.
To ensure proper operation, lines 2, 4, and 20 on the
unused female inputs should be low or open to allow the other inputs to operate properly. Pins 1 and 7 are connected
to provide a ground path. Pin 1 is Protective Ground and Pin 7 is Signal Ground on all three DB25 connectors.
To install the 232MDS3, connect a "straight through" cable (Pin 1 to Pin 1, Pin 2 to Pin 2, etc.) between the
MDS and the modem. Any pin reversing or jumpering should be done on the cables that connect to the computers or
terminals.
DECLARATION OF CONFORMITY
Manufacturer’s Name: B&B Electronics Manufacturing Company
Manufacturer’s Address: P.O. Box 1040
707 Dayton Road
Ottawa, IL 61350 USA
Model Number: 232MDS3
Description: Modem Data Splitter
Type: Light industrial ITE equipment
Application of Council Directive: 89/336/EEC
Standards: EN 50082-1
EN 61000 (-4-2, -4-3, -4-4, -4-5, -4-6, -4-8, -4-11)
Robert M. Paratore, Director of Engineering
