Dataradio Gemini PD Manuel d'entretien - Page 4

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The following terms are used throughout this document.

Item

DCE

DTE

GCU

Gemini/PD

HDX

RS-232

RSS

Simplex

Definitions

Definition

Data Communications Equipment. This designation defines the direction (input

or output) of the various RS-232C interface signals. Modems are always wired as

DCE. See also DTE.

Data Terminal Equipment. This designation defines the direction (input or out-

put) of the various RS-232C interface signals. Most user equipment, as well as

PCs, are wired as DTE. See also DCE.

Gemini Control Unit board

High specs mobile radio modem. PD = Parallel decode

Half Duplex. A unit which uses separate transmit and receive frequencies, but

which may not transmit and receive simultaneously.

Industry–standard interface for low speed data transfer (EIA-RS-232E).

Radio Service Software. This software allows configuration and testing of the

Gemini/PD.

A unit which uses the same frequency for transmit and receive.

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