Browse the glossary using this index
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Selectrix Selectrix is based on a data communication protocol originally developed by Siemens for communications between mainframe computers. Döhler & Haas developed the system and Trix currently have the exclusive marketing rights |
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Semaphore In railway terminology: A semaphore signal is a visual device which uses a moving arm to instruct train drivers if they should stop at it, or proceed past it. |
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Semiconductor
A solid substance (Usually, in electronics, silicon) that has a conductivity between that of an insulator and that of most metals, either due to the addition of an impurity or because of temperature effects. Devices made of semiconductors, such as diodes and transistors, are essential components of most electronic circuits. |
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Service mode Service mode is a DCC programming mode using a program track. It is a broadcast method of accessing CVs and does not request an address. For this reason, it may program multiple decoders simultaneously. |
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Servo An electrical motor which can be precisely positioned by a servo controller. |
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Sinewave Is a symmetrical waveform that oscillates (moves up, down, or side-to-side) It is an s-shaped, smooth wave that oscillates above and below zero |
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Sinusoidal Sinusoidal relates to being shaped like, or varying according to a sine curve or sine wave. |
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Soft soldering This refers to the type of soldering performed using a tin-lead or tin alloy solder. The process takes place at below 370°C. |
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Solder A low-melting metal alloy, especially one based on lead and tin. |
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Soldering Usually referring to Soft-soldering it is a process of joining two metal surfaces together using a filler metal called solder. |
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