Difference between revisions of "Termination"
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==Overview== | ==Overview== | ||
| − | The term "<nowiki>termination</nowiki>" is used in digital audio to describe a specific value resistor that is used at the end of a transmission chain to match the input [[impedance]] to the output impedance and characteristic impedance of the cable. The purpose of termination is to minimize "reflections" of the incoming signal waveform caused by an impedance miss-match back towards the source. Similar termination at the source serves the same purpose. | + | The term "<nowiki>termination</nowiki>" is used in digital audio to describe a specific value resistor that is used at the end of a transmission chain to match the input [[impedance]] to the output impedance and characteristic impedance of the cable. The purpose of termination is to minimize "reflections" of the incoming signal waveform caused by an impedance miss-match back towards the source. Similar termination at the source serves the same purpose. In some cases it is "fixed" and takes the form of a resistor is present on the circuit board where the signal wires attach from the input connector, or may be selectable via a switch or jumper setting. In other cases, it can be encased in a metal housing with a[[BNC]] connector for attachment to the input connector using a[[BNC "T"]]. |
==Basic== | ==Basic== | ||
Revision as of 17:18, 30 March 2012
Overview
The term "termination" is used in digital audio to describe a specific value resistor that is used at the end of a transmission chain to match the input impedance to the output impedance and characteristic impedance of the cable. The purpose of termination is to minimize "reflections" of the incoming signal waveform caused by an impedance miss-match back towards the source. Similar termination at the source serves the same purpose. In some cases it is "fixed" and takes the form of a resistor is present on the circuit board where the signal wires attach from the input connector, or may be selectable via a switch or jumper setting. In other cases, it can be encased in a metal housing with aBNC connector for attachment to the input connector using aBNC "T".