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One of the most widespread uses of RS-422 was on the early Macintosh computers. [5] This was implemented in a multi-pin connector that had enough pins to support the majority of the common RS-232 pins; the first models used a 9-pin D connector, but this was quickly replaced by a mini-DIN-8 connector starting with the Macintosh Plus. The ports ...
It uses an DE-9 D-Sub connector with 9 pins (hence the name), where bi-directional communication takes place over a four wire cable according to the RS-422 standard. While nowadays all post-production editing is done with a non-linear editing system, in those days editing was done linearly, using online editing. Editing machines relied heavily ...
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Plug (most-movable connector of a connector pair), plug connector (connector may have "male" pin contacts and/or "female" socket contacts) PD: Photodiode: Q: Transistor (all types) R: Resistor: RN: Resistor network: sometimes simplified to "R" for resistor, or "N" for network RT: Thermistor: sometimes simplified to "R" for resistor RV: Varistor ...
Early Apple Macintosh models used DE-9 connectors for RS-422 multi-drop serial interfaces (which can operate as RS-232). Later Macintosh models use 8-pin miniature DIN connectors instead. On PCs, 25-pin and (beginning with the IBM PC/AT) 9-pin plugs were used for the RS-232 serial ports; 25-pin sockets were used for parallel ports (instead of ...
Because TIA-530 calls for the more common 25 pin connector, it displaced the similar EIA-449, which also uses EIA-422/423, but a larger 37-pin connector. Two types of interchange circuits ("signals" or "leads") between the DCE and DTE are defined in TIA-530: Category I , which uses the balanced characteristics of EIA-422, and Category II ...
RS-423 systems can transmit data on cables as long as 1,200 meters (3,900 ft). [dubious – discuss] It is closely related to RS-422, which used the same signaling systems but on a different wiring arrangement: RS-423 differed primarily in that it had a single return pin instead of one for each data pin. [1]
The serial DCD pin can be used to accurately detect a PPS signal, as described in RFC 2783: [1] One convenient means to provide a PPS signal to a computer system is to connect that signal to a modem-control pin on a serial-line interface to the computer. The Data Carrier Detect (DCD) pin is frequently used for this purpose.