Tyco Electronics A1029, Руководство пользователя

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GPS Receivers A1029
V3.2 - 02/06 User’s Manual Page 7 of 43
1 Introduction
Tyco Electronics’ GPS module A1029-A is a highly integrated GPS receiver module
and can be used as an SMT component. It also serves as the basis for the GPS
module A1029-B, which is a plug-in module. Both modules are capable of receiving
signals from up to 12 GPS satellites and transferring them into position and timing
information that can be read over a serial port. The A1029-A and A1029-B extend
Tyco Electronics’ GPS receiver family, already represented by the A1021 and
A1025. This new generation of GPS modules combines small size and high-end
GPS functionality at low power consumption:
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Operable at 3.3V / 50mA (typ.) @ 1fix per second
•
Antenna sensor pin with defined current sensing range (for antenna detec-
tion or antenna short circuit detection)
•
LNA Gain select pin (for adjustment to various RF signal conditions)
A1029-A features:
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Small form factor of 22 x 28 mm (0.87” x 1.10”)
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Cost-effective antenna input
•
Single-sided SMD component, for reflow soldering
•
Tape & reel packaging
A1029-B features:
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Standard power and I/O connector
•
Standard SMA bulk head antenna connector
•
Mountable without solder process
•
Field replaceable
Both GPS receiver are available as off-the-shelf components, 100% tested and
shipped in either standard tape-and-reel package (A1029-A) or in trays (A1029-B).
1.1 Dead Reckoning
Dead Reckoning capability was introduced with hardware version 02, which can be
identified on the label. The extensions for the support of Dead Reckoning do not
affect any other characteristics of the module. 100% backward electrical and me-
chanical compatibility is assured with one exception: In order to be able to support
all necessary signals, the I/O connector of the A1029-B was extended by two pins
on each side (total of 4 pins) keeping the center pins (signals and position) identi-
cal. Therefore the connector plugs into existing designs based on the hardware
version 01. Care must be taken that the real estate now covered by the additional
pins is not populated on the carrier PCB.