# External DMX

**URL:** <https://forum.obsidiancontrol.com/t/external-dmx/6977>\
**Category:** Hardware\
**Created:** [December 25, 2021, 1:47am UTC](https://forum.obsidiancontrol.com/t/external-dmx/6977 "2021-12-25T01:47:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![defalg](https://forum.obsidiancontrol.com/letter_avatar_proxy/v4/letter/d/a183cd/32.png) [@defalg](https://forum.obsidiancontrol.com/u/defalg)\
**Post date:** [December 25, 2021, 1:47am UTC](https://forum.obsidiancontrol.com/t/external-dmx/6977/1 "2021-12-25T01:47:26Z")

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I’m looking to control intensities with an external DMX. Is this possible?  
Windows 10/11  
Using ONYX v4.6.1219.0  
NX DMX port A in and port B out.

Example:  
Chauvet Rogue R1X  
Use external DMX, to port A  
DMX ch 1 to control intensity only.

In ONYX:  
Menu/DMX in  
under the Mapping Tab select #1 in the DMX layout, click arrow (far right)  
select Rogue

How can I map just the Intensity to DMX ch 1?

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**Author:** ![deflost](https://forum.obsidiancontrol.com/letter_avatar_proxy/v4/letter/d/49beb7/32.png) [@deflost](https://forum.obsidiancontrol.com/u/deflost)\
**Post date:** [December 25, 2021, 7:40am UTC](https://forum.obsidiancontrol.com/t/external-dmx/6977/2 "2021-12-25T07:40:49Z")

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[https://support.obsidiancontrol.com/Content/Advanced\_Controls/DMX\_Input.htm?Highlight=dmx%20in](https://support.obsidiancontrol.com/Content/Advanced_Controls/DMX_Input.htm?Highlight=dmx%20in)

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<div class="post-metadata">

**Author:** ![deflost](https://forum.obsidiancontrol.com/letter_avatar_proxy/v4/letter/d/49beb7/32.png) [@deflost](https://forum.obsidiancontrol.com/u/deflost)\
**Post date:** [December 25, 2021, 7:41am UTC](https://forum.obsidiancontrol.com/t/external-dmx/6977/3 "2021-12-25T07:41:17Z")

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dmx in mapping is the key, …