User's Manual

5.8GHz PDH User’s Manual
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1. Introduction
PDH, Plesiochronous Digital Hierarchy, has been developed in these recent ten years to
a high frequency microwave, digital de/modulation, integrated digital multiplexing,
computer control and signal communication technique wholly into a wireless digital
signal communication mode.
Relevant products of “PDH equipment” has been extensively use in postal and
telecommunication service, power transmission, military affairs, various specialized
network especially in the interconnection between base stations of mobile
communication, large enterprises, schools and universities network connection. It has
been regarded as one of the quickest connection method and has been largely used in
provisional and urgent signal communication.