CALAMP WIRELESS NETWORKS INC. GPD7 Manuale Utente
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Dataradio G3 Installation Guide
Definitions
The following terms are used throughout this document.
Item
Definition
DCE
Data Communications Equipment. This designation defines the direction (input
or output) of the various RS-232 interface signals. Modems are always wired as
DCE.
or output) of the various RS-232 interface signals. Modems are always wired as
DCE.
DTE
Data Terminal Equipment. This designation defines the direction (input or out-
put) of the various RS-232 interface signals. Most user equipment, as well as
PCs, are wired as DTE.
put) of the various RS-232 interface signals. Most user equipment, as well as
PCs, are wired as DTE.
GCU
G3 modem Control Unit board
HDX
Half Duplex. A unit that uses separate transmit and receive frequencies, but
which may not transmit and receive simultaneously.
which may not transmit and receive simultaneously.
RJ45
Industry–standard interface for data transfer.
RS-232
Industry–standard interface for data transfer.
USB
Industry–standard interface for data transfer.