D-Subminiature Cable Assemblies - AT and Null Modem Cable Assemblies
D-subminiature cable assemblies include AT type modem cables and deluxe null modem cable assemblies designed to connect DCE and DTE devices. AT type modem cables feature DB25 male to DB9 female connectors in 6.0 ft and 10.0 ft lengths ensuring reliable connection between serial device or modem and PC's 9-pin serial port with 100% shielding for EMI/RFI protection, rugged molded backshells, and gold-plated contacts. Deluxe null modem cable assemblies allow two DCE or DTE devices to communicate available in 5, 10, and 25 feet with DB25 or DB9 connector options using 26 AWG stranded conductors.
For comprehensive D-Subminiature cable assembly solutions beyond AT type modem cables and deluxe null modem configurations, explore our D-Sub Cables - D-Subminiature Assemblies category, featuring economy, deluxe, premium, LSZH, high density, heavy duty, armored, printer type, right angle, and 45 degree angle cables for serial communication and data transmission applications.
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FAQs
What are AT type modem cables used for in serial communications?
AT type modem cables are ideal for DCE, modem, RS-232, and general serial applications connecting an external modem (DB25) to a PC serial port (DB9). These cables feature DB25 male to DB9 female connectors in 6.0 ft and 10.0 ft lengths ensuring reliable connection between serial device or modem and PC's 9-pin serial port. Gold-plated contacts provide reliable connections even with repeated mating cycles supporting DCE communication and RS-232 serial device connectivity.
How do deluxe null modem cable assemblies enable device communication?
Deluxe null modem cable assemblies allow two DCE or DTE devices to communicate by crossing transmit and receive data signals and bridging pins as required to prevent conflicts. The CSNULL series is wired to the most common null modem schemes enabling DTE/DCE communication, file transfer, and RS-232 use ensuring two devices can communicate without data conflicts. Available in multiple lengths including 5, 10, and 25 feet with DB25 or DB9 connector options in male, female, or reverser configurations.
What shielding protects AT type modem cables and null modem assemblies?
AT type modem cables feature 100% shielding for EMI/RFI protection maintaining signal integrity in serial device and modem connections. Deluxe null modem cable assemblies use 26 AWG stranded conductors with foil shielding for flexibility and performance, fully molded backshells with copper shielding for EMI/RFI protection. Both cable types provide excellent shielding ensuring consistent and reliable performance in serial connectivity applications experiencing electromagnetic interference.
What connector configurations are available in D-subminiature cable assemblies?
D-subminiature cable assemblies include AT type modem cables with DB25 male to DB9 female connectors and deluxe null modem assemblies with DB25 or DB9 connector options in male, female, or reverser configurations. AT type cables connect external modem DB25 to PC serial port DB9 while null modem assemblies support various DCE and DTE device combinations. Multiple connector configurations accommodate different serial communication and RS-232 application requirements.
What construction features ensure AT type modem cable durability?
AT type modem cables feature rugged molded backshells for durability protecting cable-to-connector transitions in serial device and modem applications. Gold-plated contacts provide the best conductivity and reliable connections even with repeated mating cycles in DCE and RS-232 installations. The molded construction with 100% shielding supports durable, reliable, and high-performance connectivity for serial devices requiring frequent connection and disconnection.
How do thumbscrews simplify null modem cable installation?
Deluxe null modem cable assemblies feature 4-40 thumbscrews for quick, tool-free securing enabling convenient installation in DTE/DCE communication and file transfer applications. The thumbscrews provide finger-tight mechanical retention without requiring screwdrivers or hex tools during RS-232 serial device connections. Tool-free attachment supports straightforward installation in serial connectivity applications requiring frequent reconfiguration or equipment moves.
What cable lengths are available for AT type modem and null modem assemblies?
AT type modem cables are available in 6.0 ft and 10.0 ft lengths accommodating various separation distances between serial devices or modems and PC serial ports. Deluxe null modem cable assemblies are offered in multiple lengths including 5, 10, and 25 feet supporting different equipment spacing requirements in DTE/DCE communication and file transfer installations. Multiple length options enable flexible deployment in RS-232 serial applications with varying cable run requirements.
Need assistance selecting the right AT type modem cable or deluxe null modem cable assembly for your serial communication or RS-232 application? Our engineering team provides expert technical guidance on connector configuration selection, cable length requirements, null modem wiring schemes, and shielding specifications for your specific DCE, DTE, modem, or serial device connectivity application requirements.
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L-com has the largest in-stock selection of D-subminiature cable assemblies, including AT type modem cables and deluxe null modem cable assemblies. Our skilled technical support and professional sales team can help you select the ideal cable assembly for your serial applications.
