EIA/TIA-449，以前叫做 RS-449，是一个通俗的物理层接口，由EIA和TIA发展的。EIA/TIA-449，本质上，是EIA/TIA-232一个较快的（达到2 Mbps）版本能够进行更长电缆的运转。 Introduction
Prerequisites
Requirements
Components Used
Conventions
EIA/TIA−449 Speed and Distance Limitations
Serial Cable CAB−449MT
EIA/TIA−449 Serial Cable Assembly
EIA/TIA−449 DTE Cable Pinouts
Serial Cable CAB−449FC
EIA/TIA−449 DCE Cable Pinouts (DB−60 to DB−37)
Related Information
This document provides the technical and cable specifications for the EIA/TIA−449 serial cables.
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软件简介