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I'm sorry, why do I need a "citation" if I state that the vast majority of Dmx-compliant products the world over have 3-pin XLR connectors exactly like the ones used in audio? Is that my opinion? No: It's a fact. It's all over, anybody can see it. Go to any manufacturer's website and check out the rear panel description. Any price range. The 5 pin got lost somewhere on the way, and only higher-end products provide it, ALONG with the 3-pin. Not my fault. We can't have citations all over the place, it's moronic. If you know something and it's a known fact, you state it; if it smells fishy, drop a citation, but if it's common knowledge, what the hell? — Preceding unsigned comment added by 2.156.255.50 ( talk) 20:49, 29 June 2011 (UTC)
Because you are wrong. Quite simply, the 3-pin XLR connector is *specifically* prohibited by the E1.11 standard. Therefore, devices fitted with a 3-pin XLR connector are demonstrably non-compliant.
Some reputable manufacturers still use 3-pin XLR connectors on some of their current designs - notably Martin Entertainment - and they provide both 3 and 5-pin connectors as they know it's not permitted and are only doing it on some of their lower-end devices because their first devices used the 3-pin for the proprietary Martin communication protocol they were using prior to USITT DMX512-1990.
There are indeed a lot of cheap knock-off fixtures that use 3-pin connectors. Most of those don't comply with the data portion of the standard either, using such things as framing-error to detect the Break instead of the actual timing, and they are often incapable of accepting DMX data transmitted outside a very narrow range of timings.
- Personally I believe these mistakes are because the Microchip PIC App. Note example code for DMX 512 reception has these particular flaws. Of course, that's personal opinion so doesn't count on Wikipedia. — Preceding unsigned comment added by 87.194.55.71 ( talk) 20:09, 28 September 2011 (UTC)
Could the article do with less use of bold+italics in the first half of the article? It seems to make it harder to read.— Preceding unsigned comment added by 172.201.181.18 ( talk • contribs) 18:03, 24 June 2005
Javid Butler 09:35, 23 February 2007 (UTC) Page name should be changed to DMX512, which is the only name the protocol has ever had.
@Kmccoy: Why did you delete my link? The AVR code was a lot of work and it isn't spam... Hendrik — Preceding unsigned comment added by 87.78.65.96 ( talk • contribs) 09:24, 5 March 2006
Could we please have some more information about DMX-512A? Tompw 13:39, 12 March 2006 (UTC)
This page has lots of information but lacks detail on the core part: the protocol itself. The protocol has a break signal, a mark after break, a start code, with their respective minimum and maximum timings. The rest are unimportant details. Motumboe ( talk) 16:33, 13 November 2008 (UTC)
One of might lighting pals says that art-net is a way of doing DMX over Ethernet - and it does a whole lot of wacky things. If anybody who knows about the subject could add a section, it'd be nice. -- moof ( talk) 03:19, 30 January 2009 (UTC)
there are separate wiki pages relating to art-net and cat-5 I have added links to them on this page and basic infomation — Preceding
unsigned comment added by
Cjgig05 (
talk •
contribs) 08:31, 12 April 2020 (UTC)
Hi, anyone know if other common sockets get substituted much for the 5 (and 3) pin XLRs? I've been asked to make up an extension lead for stage smoke machine controller, but there doesn't seem to be much information available - it's own user manual is particularly usless, offering just 3 pages in each language, on basic setup and use. Thing is, it uses a 5-pin DIN socket.... hmmm. So, much likelihood it's DMX compatible and they were just trying to save a little cash and lock you into proprietary equipment/spares, or would it be completely custom? (Trying to do the job cheaply and efficiently is proving difficult, and I'd rather not run into some of the listed problems e.g. using the wrong impedence of cable). If there's a chance this is the case, I can go add the fact to the appropriate part of the mainpage also :) 193.63.174.10 ( talk) 15:15, 3 March 2009 (UTC)
(OTOH ... I suppose it 'could' be MIDI-based. Bit wierd for a standalone system in this day and age, but possible) 193.63.174.10 ( talk) 15:22, 3 March 2009 (UTC)
The result of the move request was moved. Wizardman 22:19, 30 November 2009 (UTC)
DMX512-A →
DMX512 — The current title/pagename refers only to the newer revisions of the standard while the article covers all revisions, therefor the generic DMX512 is the correct title.
Keeper of the Keys (
talk) 11:57, 24 November 2009 (UTC)
*'''Support'''
or *'''Oppose'''
, then sign your comment with ~~~~
. Since
polling is not a substitute for discussion, please explain your reasons, taking into account
Wikipedia's naming conventions.Can we add a sentence saying that DMX stands for Digital MultipleXing? I think that is appropriate, but I don't know the rules. —Preceding unsigned comment added by 206.53.153.156 ( talk) 18:25, 17 December 2009 (UTC)
Some editors have shown a propensity to insert problematic, direct quotes from the DMX512 standard. I've tried to clean these up, but they keep popping back into the article. I don't want to offend, and I certainly don't want to start an edit war, so I will explain my thinking here and leave it to others to decide the validity of my thinking and take appropriate action. A case in point:
DMX512 data are sent using EIA-485 voltage levels. However, quoting from E1.11,"The electrical specifications of this Standard are those of EIA-485-A, except where specifically stated in this document. Where a conflict between EIA-485-A and this document exists, this document is controlling as far as this Standard is concerned."
There are several problems with such quotes, and this quote in particular:
Lambtron ( talk) 15:12, 22 February 2010 (UTC)
It seems to me that discussion of DMX512 operation without terminators falls under WP:NOTHOWTO (e.g., "For short cable runs of less than about 45 metres (148 ft) with only a few devices, it is sometimes possible to operate without termination."). Many other tips and tricks could be given here, but they are all outside the scope of the DMX512 specification and standard practice. I propose that all such statements be removed. Lambtron ( talk) 15:23, 8 July 2013 (UTC)
I agree that the article is NOT meant to be just a repeat of official specifications. It is also not meant to be a repository of hacks, which are fundamentally HOWTOs. That being said, I agree with Sbmeirow's statement, amended as follows: "you can describe alternate configurations that work if you have reliable sources that back up your statements."
If terminator and cable hacks are common practice, surely there must be RSs that confirm that? Also, it's almost meaningless to say that a hack works "sometimes" with "a few devices" and "shorter cables"; such vague generalities should be rewritten as enclopedic facts. Perhaps RS can help with that? As a reader, I'm also interested in knowing who uses these hacks, and why they would choose to use them instead of the (apparently) more reliable standard practice. Lambtron ( talk) 14:32, 9 July 2013 (UTC)
When dealing with 3-pin DMX equipment, and trying to correct the mess they make to the 5-pin XLR standards, should the unused pair for future use be bridged across the device for standards compliance?
This would take the form of an H-shaped pair of 3-to-5 barrel adapters or a W-shaped pair of 3-to-5 pigtails, with a short cable running between them to span the second pair.
-- DMahalko ( talk) 18:48, 2 May 2014 (UTC)
A second question is regarding shielding of this spanned pair. I assume it should be shielded, so that's not really at issue. The question is about ground loops. Should this shield attach only at one end of 5-pin connectors, since it is already passed through the 3-pin DMX device? Or should grounding the second-pair shield to both 5-pin connectors not matter, being right next to the 3-pin DMX device?
-- DMahalko ( talk) 21:26, 2 May 2014 (UTC)
In the beginning it was really simple - Light connects to dimmer connects to controller.
As time went by more layers have been added. Like Universes (512 channels each) and Servers residing on TCP/IP networks.
Wires have also evolved - many systems use CAT5 wires, others use WiFi networks.
The article needs to pull this stuff together to be a true encyclopedia entry - otherwise it isn't any better than the little sheets that come with a new DMX light (fairly useless for a newbie).
FHSS systems tend to disturb other types of wireless communication systems such as WiFi/WLAN. This has been solved in newer wireless DMX systems by using adaptive frequency hopping and cognitive coexistence, a technique to detect and avoid surrounding wireless systems, to avoid transmitting on occupied frequencies.[15]
The only citation here is for the FAQ page of a vendor (LumenRadio) who sells equipment which claims to prevent this "disturbance". The term "cognitive coexistence" is one of their marketing buzzwords, not a technical term. These sort of dubious marketing claims should not be stated as fact on Wikipedia. 2001:569:77BB:A800:3414:C618:D9C3:7DC7 ( talk) 09:28, 21 June 2020 (UTC)