D-Subminiature Adapters, Couplers, Splitters - Serial-Null Modem
D-subminiature serial null modem adapters and couplers support RS-232 serial communication between DTE and DCE devices by modifying signal pinouts without requiring replacement of existing cables including DB9 and DB25 adapters converting straight-through serial connections into null modem or signal-reversing configurations. Available in pin-2 and pin-3 reversers, standard null modem, full-handshake, auto-handshake, and specialty null modem configurations with high-profile molded and slimline low-profile designs. Fully shielded constructions with gold-plated contacts and steel connector shells support modem connections, serial data transfer, and WAN interfaces.
For comprehensive D-sub adapter solutions beyond serial null modem configurations, explore our D-Sub Adapters category, featuring gender changers, panel mount adapters, socket savers, video adapters, filtered adapters, right angle adapters, Y adapters/splitters, monitor adapters, and adapter kits for serial, video, and data applications.
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FAQs
What are D-subminiature serial null modem adapters used for?
L-com D-subminiature serial null modem adapters and couplers are designed to support RS-232 serial communication between DTE and DCE devices by modifying signal pinouts without requiring replacement of existing cables. These adapters are commonly used in modem connections, serial data transfer, WAN interfaces, test equipment, and RS-232 DTE/DCE communications. Typical applications include converting existing serial cables for modem emulation, enabling device-to-device communication, and supporting system setup, troubleshooting, or maintenance tasks.
What wiring configurations are available for serial null modem adapters?
Serial null modem adapters include DB9 and DB25 adapters that convert straight-through serial connections into null modem or signal-reversing configurations. These serial adapters are available in multiple wiring styles, including pin-2 and pin-3 reversers, standard null modem, full-handshake, auto-handshake, and specialty null modem configurations. The wiring variety accommodates different RS-232 serial communication requirements in modem connections, serial data transfer, and WAN interface applications.
What form factors do serial null modem adapters include?
Serial null modem adapters product line includes both high-profile molded adapters and slimline low-profile designs to support a wide range of installation environments, including applications with limited port clearance or space constraints. Slimline designs help reduce leverage stress on serial ports in space-constrained test equipment and RS-232 DTE/DCE communications. High-profile and low-profile options accommodate different installation scenarios in modem connections and serial data transfer environments.
What shielding and contact plating do null modem adapters provide?
D-subminiature serial adapters feature fully shielded constructions to help reduce EMI and RFI in electrically noisy environments, along with gold-plated contacts to support consistent signal transfer. Shielding protects RS-232 serial communication from electromagnetic interference in industrial and commercial installations. Gold-plated contacts ensure reliable electrical connections in modem connections, serial data transfer, and WAN interface applications requiring consistent signal quality.
How do null modem adapters enable device-to-device communication?
Serial null modem adapters convert straight-through serial connections into null modem or signal-reversing configurations enabling RS-232 serial communication between DTE and DCE devices. Null modem wiring crosses transmit and receive signal lines allowing direct device-to-device connection without modems. This signal modification supports modem emulation, serial data transfer between computers, and test equipment connectivity where devices expect opposite DTE/DCE roles.
What mounting hardware options do serial null modem adapters include?
Serial null modem adapters offer removable mounting hardware to support compatibility with different mating screw requirements in modem connections and serial data transfer installations. Removable hardware accommodates variations in serial port mounting screw spacing and thread types. These adapters are available in configurations for in-series or between-series connections depending on the model supporting different RS-232 serial communication scenarios.
Need assistance selecting the right serial null modem adapter for your RS-232 communication or modem connection application? Our engineering team provides expert technical guidance on wiring configuration selection, form factor requirements, shielding specifications, and DTE/DCE compatibility for your specific serial data transfer, test equipment, or WAN interface application requirements.
Contact Sales: Sales@L-com.com
Product Technical Support: techsupportrf@infiniteelectronics.com
L-com offers a wide selection of D-Subminiature serial null modem adapters and couplers. Standard and specialty configurations are supported to meet a range of serial communication requirements.
