RoyalTek REV-2000 - Manual (Page 18)

RoyalTek GPS Receiver REB-2000/REB-12R REV-2000 Operational Manual
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— Excellent sensitive for urban canyon
and foliage environments.
— Single satellite positioning.
— Dual multi path rejection.
REB-12R
— OEM product development is fully
supported through applications
engineering and WEB technique
forum.
— 12 parallel channels
— 0.1 second re-acquisition time.
— Enhanced algorithm for navigation
stability.
— NMEA-0183 compliant
protocol/custom protocol.
— Excellent sensitive for urban canyon
and foliage environments.
— Single satellite positioning.
— Dual multi path rejection.
Product applications
REB-2100
— Portable IA device for personal
navigation/ position commerce
(P-Commerce)
— Automotive applications
— Personal positioning and navigation
— Marine navigation
— Timing application
REB-12R
— Automotive applications
— Personal positioning and navigation
— Marine navigation
— Timing application
Technique description
REB-2100
General information. The REB-2100 is a
stamp size GPS receiver. It requires +3.3V DC
power input. It can operate with an active
antenna through a MMCX connector. It
provides the antenna power through RF cable.
The default DC input of active antenna is 3.3V
+/- 10%. Since it needs 4 satellites or more to
do the first position fix. The suitable view angle
of the active antenna is necessary. It will
determine the first time position update after a
good satellites geometry (PDOP <= 10). If the
satellites are blocked, it may take time to
determine the position. Caution: Please do
not put any metal stuff on the antenna. It
results in GPS receiver getting nothing. In
urban canyon, the fast 0.1 s re-acquisition
capability can make it determine the position
right away through the cross-intersection.