Bacharach HGM300 Technical Note

Bacharach, Inc. 

621 Hunt Valley Circle, New Kensington, PA 15068 

Phone: 724-334-5000 • FAX: 724-334-5001 • E-mail: help@bacharach-inc.com 

Printed in U.S.A. 

® Registered trademark of Bacharach, Inc. 

Connecting Multiple RDM800’s to

the HGM300 Monitor

TN 04-1 

Rev. 0 – April 2004

The following information describes how to connect multiple RDM800's to the HGM300 Monitor, 

along with providing configuration and operating tips. 

Interconnect the RDM800’s and the HGM300 as follows: 

NOTE:

  The maximum number of RDM800’s that can be connected together is FOUR. 

RDM800 

1.  From the HGM300, wire its RS-485 connector to the “TO MONITOR” connector in RDM #1. 

2.  From RDM #1, wire its “HOST” connector to the “TO MONITOR” connector in RDM #2. 

3.  From RDM #2, wire its “HOST” connector to the “TO MONITOR” connector in RDM #3. 

4.  From RDM #3, wire its “HOST” connector to the “TO MONITOR” connector in RDM #4. 

5.  The terminators from the HGM300 to the first RDM800 should be OUT. 

6.  The terminators from HOST to MONITOR connections between RDM800’s should be IN.  

Technical

Note

To Monitor 

Host