1-3
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is strictly prohibited. All violators shall be prosecuted to the fullest extent of the law.
3/01 (rev. 3)
General Information
GINA User’s Manual
•
Error-free communication
. Automatic error detection is
built into some models.
•
Cost
. Spread spectrum technology is inexpensive compared
to an equivalent hard-wired installation.
•
Data throughput
. Spread spectrum technology is a transpar-
ent, real-time, point-to-point, and point-to-multipoint wire-
less network.
•
Multi-channel
. Spread spectrum radios have multiple chan-
nels that can be dynamically changed with software. It allows
for repeaters, redundant base stations, and overlapping
antenna cells. A great advantage is in the dynamic control of
radio signal ‘peaks’ and ‘valleys.’
A typical spread spectrum radio signal is shown in Figure 1-2.
Figure 1-2. Spread Spectrum Radio Signal
A typical narrow band signal is shown in Figure 1-3.
Figure 1-3. Narrow Band Radio Signal
Definitions of Terms
DATA INTERFACE
— The asynchronous interface port provided for
connectivity is a EIA-232 (RS232) standard.
DIRECT SEQUENCE
— Direct sequence is a technique that takes a