glossary:glossary_a
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glossary:glossary_a [2019/09/05 22:27] – [AWG] more detail and ideas of what to expect tgerbic | glossary:glossary_a [2021/09/22 09:51] – used the correct syntax for linking to Wikipedia (so the icon is correct) Wayne | ||
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- | Alternating Current | + | Alternating Current. Refers to a situation where current flows back and forth through a conductor (wire) in alternating directions. |
+ | |||
+ | The opposite of AC is DC where the current only flows in one direction. DC will have a voltage level in only one direction, either positive or negative, referenced to a common, ground or zero volts reference point. | ||
+ | |||
+ | Mains power in many countries such as Britain, Australia | ||
+ | \\ | ||
[[http:// | [[http:// | ||
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- | **[[glossary: | + | **[[glossary: |
https:// | https:// | ||
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- | The MERG DCC accessory encoder is designed to operate as a DCC command station independently from the track DCC although it uses the NMRA Standard for its information encoding and can operate most other accessory decoders as well as the MERG kits.\\ | + | The MERG DCC accessory encoder is designed to operate as a DCC command station independently from the track DCC. It uses the NMRA Standard for its information encoding and can operate most other accessory decoders as well as the MERG kits.\\ |
https:// | https:// | ||
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- | Address is the unique identification of anything. In the context of DCC it means the coding of each loco or other decoder, which ensures that it identifies the signals intended for it. | + | Address is the unique identification of anything. In the context of DCC it means the coding of each loco or other decoder, which ensures that it identifies the signals intended for it. |
+ | |||
+ | You will encounter two address ranges in the NMRI DCC standard, two-digit addressing (called short addressing) and four-digit addressing (called long or extended addressing). The number of digits refers to how many hexadecimal digits are transmitted/ | ||
+ | |||
+ | DCC decoders store the addresses in Configuration Variables (CVs). Each decoder vendor may have different set of CVs to store the digits. Refer to the docs that came with your decoder. | ||
===== Agile ===== | ===== Agile ===== | ||
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- | ===== Amps ===== | + | ===== Amps or Ampere |
- | The unit of current. It is defined as the constant | + | An ampere is a measure |
+ | |||
+ | In the model railroad context, you would expect to see a DC supply or a DCC booster providing several amps of current to a track, and most other circuits | ||
+ | |||
+ | In a home environment, | ||
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American Standard Code for Information Interchange | American Standard Code for Information Interchange | ||
[[glossary: | [[glossary: | ||
- | [[http:// | + | [[wp>ASCII|ASCII]] |
===== Aspect ===== | ===== Aspect ===== | ||
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- | ===== Auto reverse | + | ===== AT-Bus ===== |
+ | An alternative CAN Bus protocol devised by MERG member Roger Edwards which overcomes what he sees as deficiencies in the [[glossary: | ||
+ | |||
+ | |||
+ | ===== Auto Reverse Module | ||
- | An auto reverse module is used in DCC to prevent shorts in reversing loops and other situations where the polarity of two lines must be reversed for a train to run through. It works by reversing the polarity if a short is detected. If the short is eliminated then the new polarity is accepted and is kept. One auto reverse module can protect several track sections provided that only section break is being bridged by a loco at any one time. | + | An auto reverse module is used in DCC to prevent shorts in reversing loops and other situations where the polarity of two lines must be reversed for a train to run through. It works by reversing the polarity if a short is detected. If the short is eliminated then the new polarity is accepted and is kept. One auto reverse module can protect several track sections provided that only one section break is being bridged by a loco at any one time. |
+ | ===== AVR ===== | ||
+ | AVR is the name of a microcontroller family used in many [[: | ||
+ | See [[wp> | ||
===== AWG ===== | ===== AWG ===== | ||
glossary/glossary_a.txt · Last modified: 2022/04/29 19:54 by sven-e