參數(shù)資料
型號(hào)： GPS140HR
廠商： Electronic Theatre Controls, Inc.
英文描述： GPS Positioning Module
中文描述： GPS定位模塊
文件頁(yè)數(shù)： 23/38頁(yè)
文件大?。?/td> 282K
代理商： GPS140HR
GPS140HR
23
RTD Embedded Technologies, Inc.
The GPS receiver module
A 12-channel parallel-tracking GPS receiver provides fast Time-To-First-Fix (TTFF)
under all startup conditions. While the best TTFF performance is achieved when the
time of day and current position estimates are provided by the receiver, the flexible
signal acquisitions system takes advantage of the available information to provide
fast TTFF. Acquisition is guaranteed under all initialization conditions as long as
visible satellites are not obscured.
To minimize the TTFF when primary system power is off the GPS140HR maintains
the SRAM and the Real Time Clock (RTC) using the onboard battery. In this case the
shortest TTFF is achieved by using the RTC time data and prior position data stored
in the receiver’s SRAM.
The receiver supports 2D operation when less than three satellites are available or
when required by operating conditions. Altitude information required for 2D operation
is determined by the receiver or may be performed by your application software.
Communication to and from the receiver is performed through a serial channel that is
connected to the onboard UART. The receiver’s primary serial port outputs
navigation data and accepts commands from the OEM application in NMEA-0183
format or Connexant binary message format. The seondary serial port is configured
to accept DGPS corrections in the RTCM SC-104 format. A complete detailed
description of the serial data interface is contained in the Conexant document:
ZODIAC GPS Receiver Family Designer’s Guide availabe on the web at
http://www.conexant.com/
.
The GPS140HR is factory preconfigured to operate in NMEA/0183 format at a
datarate of 9600bps.
This manual is not designed to be a GPS handbook, for a complete description on
the GPS receiver TU30-D140 visit the rever manufacturers website, for a complete
description on the NMEA protocol you can visit
http://www.nmea.org/
.
Antenna
The GPS receiver can operate from an active or passive GPS antenna to receive L1
band frequency GPS carrier signals. Matsushita Automation Controls produces a
complete range of GPS antennae to meet the ultra-compact automotive, heavy-duty
marine and extremely accurate survey and timing requirements. The starter kit SK-
GPS140HR contains a VIC1-LP low profile antenna. This is a +5V active antenna
with a power consumption of 25mA max and it will operate from –40 to +100C.
Typical cable connections are made with OSX, SMA and SMB connections. If you
connect the antenna directly to your GPS receiver without a feed through connector
through your enclosure wall you can select an antenna with an OSX connector to plug
into the OSX plug on your receiver module. Visit
http://www.mac-europe.com/
for
information on GPS antennae.
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