Talk:Digital Command Control

message: SDCC claim to be the first and only DCC only model railway club in the world.
Do you think it merits a mention and if yes where?
- http://sheffielddcc.weebly.com/  — Preceding unsigned comment added by 213.143.18.9 (talk) 16:46, 31 May 2011 (UTC)
thread_title:  SDCC 

message: Is Digital Command Control really an open standard as claimed on Trainmaster Command Control and Hornby Railways? Quoting MTH Electric Trains:
: MTH has also traded lawsuits with Quantum Sound Industries, whose technology is used to add electronic sound to model locomotives from various manufacturers. MTH's critics also say the company patented some elements of DCC, which was supposed to be an unencumbered open standard.
— Tobias Bergemann 06:48, 26 July 2006 (UTC)
thread_title:  Open standard 

message: I wonder if this article should be renamed to NMRA DCC? Digital command control is basically a generic term which happens to be part of the name of NMRA DCC system as well. Currently the article discusses NMRA DCC, not dcc systems in general. I think it would be justified to create a new system neutral article about digital command control technology with references to real world dcc applications such as NMRA-DCC, Selectrix, Märklin-Motorola, Fleischmann FMZ etc.<BR>
—Z220info (talk) 07:10, 6 July 2008 (UTC)
replies: text: Some time down the road, it is clear that the NMRA definition is now the industry standard, although there are, as ever in the computing industry, proprietary extensions used by large manufacturers as a basis for a future claim to patent rights. However, the NMRA has recently extended the DCC Protocol with a hardware bus, initially conceived as [], a socket structure for potential design standards. One in particular, [(Layout Control Bus)], is in beta testing as the actual standard, using TCP/IP(?) communication between Arduino microprocessors as local network nodes. This is a significant extension and probably needs a master meme of which DCC should be a subset.  — Preceding unsigned comment added by 176.250.169.160 (talk) 15:13, 8 September 2013 (UTC)
thread_title: Article rename

message: The Z scale article currently states "Use of the universally popular National Model Railroad Association (NMRA) Digital Command Control (DCC) standard has expanded substantially in Z scale recently as locomotive decoders with sizes comparable to the sizes of smallest Selectrix decoders have become available" however this article doesn't currently mention Z scale. When someone has the time, could I request that this, that, or both articles are edited to address this inconsistency? Thanks in advance. GFHandel ♬  00:22, 21 March 2012 (UTC)
thread_title:  DCC Z scale 

message: In the section "How DCC works", para 2, it says: "The voltage to the track is a bipolar DC signal."  Shouldn't this read, "The signal to the track is a bipolar DC signal." to differentiate it from the AC power voltage ?  Darkman101 (talk) 01:53, 4 February 2013 (UTC)
replies: text: Or in plain English? All signals are bipolar, if only by reference to a neutral or earth, whereas DCC uses an apparently redundant inversion of the reference signal. Describing it as bipolar is only significant if there is an intention to use the negative side of the signal for another purpose: as it is, it simply seems to be a noise suppression method, facilitating the identification of each bit's reference null point. Your proposed revision is more than somewhat tautologous, "The signal is a signal"...  — Preceding unsigned comment added by 176.250.169.160 (talk) 15:33, 8 September 2013 (UTC)
replies: text:  It is an AC signal, not DC.--Racklever (talk) 10:28, 11 January 2020 (UTC)

text: https://en.wikipedia.org/wiki/Alternating_current: "The usual waveform of alternating current in most electric power circuits is a sine wave, whose positive half-period corresponds with positive direction of the current and vice versa. In certain applications, like guitar amplifiers, different waveforms are used, such as triangular waves or square waves." -- Dm5 (talk) 12:50, 26 May 2021 (UTC)
replies: text: @Dm5 AC does not have to be sinusoidal,  it can be square, rectangular,  trapezoidal,  etc.. The DCC signal is AC. The signal is never OFF as is stated. The information in the signal is transmitted as a series of 0's and 1's based on the pulse width. 2600:1017:A004:83B9:18D:E3A9:45A3:582F (talk) 14:04, 11 April 2023 (UTC)
replies: text: I could not agree more! I did say it is "usually sinusoidal" but "different waveforms are used, such as triangular waves or square waves". To me NMRA-DCC is frequency modulated square wave AC. Those saying AC should only be sinusoidal can look at https://meettechniek.info/additional/additive-synthesis.html and test onself: square wave AC can be constructed by summing harmonics of sinusoidal AC. Dm5 (talk) Dm5 (talk) 19:54, 12 July 2023 (UTC)
thread_title:  Signal/Voltage