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Bacharach, Inc. 

621 Hunt Valley Circle, New Kensington, PA 15068 

Phone: 724-334-5000 • FAX: 724-334-5001 • E-mail: [email protected] 

 
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 

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