How to protect RS-232 serial connections

Nov. 8, 2012
The RS-232 port often represents the "Achilles heel" of otherwise power-protected computer installations.

A recent white paper from APC-Schneider Electric explains specific power protection issues related to RS-232 cabling. The document contends that the RS-232 port often represents the "Achilles heel" of computer installations which are otherwise well protected by UPS systems and other power protection equipment.

The document notes that in an interconnected network of computer equipment, RS-232 serial data connections are frequently used for connections to terminals, printers, modems, and in the case of so called "zero slot" LANs, for network wiring connections. However, the RS-232 port on any device also represents a path into the device for damaging noise and transients. The types of transients which can enter via an RS-232 port originate from a variety of sources. These sources include inter-system ground noise, telephone line surges, and wiring faults.

Authored by Neil Rasmussen, the paper explains in detail the special vulnerabilities of RS-232 cabling, and describes appropriate protection and mitigation techniques.

Download the white paper here.

See also:NEMA Surge Protection Institute launches educational website

Sponsored Recommendations

400G in the Data Center

Aug. 3, 2022
WHATS NEXT FOR THE DATA CENTER: 400G and Beyond

Power up your system integration with Pulse Power - the game-changing power delivery system

May 10, 2023
Pulse Power is a novel power delivery system that allows System Integrators to safely provide significant power, over long distances, to remote equipment. It is a Class 4 power...

The Agile and Efficient Digital Building

May 9, 2023
This ebook explores how intelligent building solutions can help businesses improve network infrastructure management and optimize data center operations in enterprise buildings...

Revolutionize Your Network with Propel Fiber Modules

Oct. 24, 2023
Propel Fiber Modules are your gateway to the future of connectivity.