E1.20 RDM (Remote Device Management) Protocol Forums  

Go Back   E1.20 RDM (Remote Device Management) Protocol Forums > RDM User Forums > DMX512 Discussion

DMX512 Discussion Discussion and questions relating to DMX512-A and DMX512/1990.

Thread Tools Search this Thread Display Modes
Old December 6th, 2006   #1
Junior Member
Join Date: Aug 2006
Posts: 2
Default DMX 512-A / 1990 compatibility


Can I use in the same network devices using DMX 512-A and devices using DMX 512 1990?

In the DMX 512-A we can read that this protocol is not appropriate for hazardous application is it always true with the RDM?

Thank you
gomlight is offline   Reply With Quote
Old December 7th, 2006   #2
Task Group Member
Join Date: Jun 2006
Posts: 181
Default DMX512-A and DMX512/1990

Provided the products actually comply with the two standards, there should be no real reason not to mix old and new on the same network. Such compatability was a REAL concern for the task group when we created DMX512-A.

One caveat, however. Caution is required when using Transmitters whose outputs are "isolated" or "floating" in conjunction with Receivers that are "isolated" or "floating", as you may end up with NONE of your screened cables' screen connected to chassis or earth.

The latest standard recommends the use of the "grounded Transmitter/ isolated Receiver" topology.

In answer to your second question, RDM does NOT make the Null Start code packets on a DMX link any more robust. Test packets and SIPS (as defined in DMX512-A) allow some qualification about the quality of your links, but I would still not advocate the generic use of DMX as a control protocol in "hazardous" applications.
prwatE120 is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -6. The time now is 08:32 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.