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A DB-25 connector as described in the RS-232 standard Data circuit-terminating equipment (DCE) and data terminal equipment (DTE) network. In telecommunications, RS-232 or Recommended Standard 232 [1] is a standard originally introduced in 1960 [2] for serial communication transmission of data.
Data Carrier Detect (DCD) or Carrier Detect (CD) is a control signal present inside an RS-232 serial communications cable that goes between a computer and another device, such as a modem. This signal is a simple "high/low" status bit that is sent from a data communications equipment (DCE) to a data terminal equipment (DTE), i.e., from the modem ...
Data Terminal Ready (DTR) is a control signal in RS-232 serial communications, transmitted from data terminal equipment (DTE), such as a computer, to data communications equipment (DCE), for example a modem, to indicate that the terminal is ready for communications and the modem may initiate a communications channel.
A four-port serial (RS-232) PCI Express ×1 expansion card with an octopus cable that breaks the card's DC-37 connector into four standard DE-9 connectors Example of a pocket-sized RS-232 breakout box that features switches to reconfigure or patch any or all the active circuitry. This unit has one DB25 male and one DB25 female RS-232 connector
Comprehensive DB-25 wiring diagrams: Tascam, Apple, SCSI, etc. "Pinouts by Connector". Pinouts. A list of common computer connectors, including most D-sub. "9 pin D-SUB female connector diagram and applications". Pinouts. Archived from the original on 2007-09-01 Devices with DE-9 connectors. "D-sub 9 Connector Pinout".
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A null modem adapter. Null modem is a communication method to directly connect two DTEs (computer, terminal, printer, etc.) using an RS-232 serial cable.The name stems from the historical use of RS-232 cables to connect two teleprinter devices or two modems in order to communicate with one another; null modem communication refers to using a crossed-over RS-232 cable to connect the teleprinters ...
An AUI connector is a DA-15 (D-subminiature) type, where the DTE side has a female connector and the MAU side has a male connector. [ 1 ] The connector often uses a sliding clip instead of the typical thumbscrews found on D-connectors, allowing the DTE and MAU to be directly attached, even when their size or shape would not accommodate thumbscrews.