signal path
71Modulation error ratio — The modulation error ratio or MER is a measure used to quantify the performance of a digital radio transmitter or receiver in a communications system using digital modulation (such as QAM). A signal sent by an ideal transmitter or received by a… …
72Pulse link repeater — In telecommunications, a pulse link repeater (PLR) is a device that interfaces concatenated E M signal paths. Note 1: A PLR converts a ground, received from the E lead of one signal path, to 48 Vdc, which is applied to the M lead of the… …
73Comparator — For other uses, see Comparator (disambiguation). In electronics, a comparator is a device that compares two voltages or currents and switches its output to indicate which is larger. They are commonly used in devices such as Analog to digital… …
74Eye pattern — Graphical eye pattern showing an example of two power levels in an OOK modulation scheme. Constant binary 1 and 0 levels are shown, as well as transitions from 0 to 1, 1 to 0, 0 to 1 to 0, and 1 to 0 to 1. In telecommunication, an eye pattern,… …
75Test card — A test card, also known as a test pattern in the UK, North America and Australia, is a television test signal, typically broadcast at times when the transmitter is active but no program is being broadcast (often at startup and closedown). Used… …
76Effects pedal — An effects pedal (or a Stomp Box ) is an electronic effects unit housed in a small metal or plastic chassis used by musicians, usually electric guitar players, to modify their instrument sound. Musicians playing electronic keyboards,… …
77Allen Telescope Array — For other uses, see ATA. Allen Telescope Array ATA The Allen Telescope Array (ATA 42), October 11, 2007 …
78EIA-422 — American national standard ANSI/TIA/EIA 422 B (formerly RS 422) and its international equivalent ITU T Recommendation [http://www.itu.int/rec/T REC V.11/en V.11] (also known as X.27), are technical standards that specify the electrical… …
79Geddy Lee — Lee playing his signature Fender Jazz Bass on Rush s Snakes Arrows Tour Background information Birth name Gary Lee Weinrib …
80Light-emitting diode — LED redirects here. For other uses, see LED (disambiguation). Light emitting diode Red, pure green and blue LEDs of the 5mm diffused type Type Passive, optoelectronic Working principle Electr …
