Average Reviews:
(More customer reviews)This unit is fine for experimenters who can manage a little soldering and a little software, too. You can provide it with 5 volt power and simply use the 1pps output, or you can also connect it to a serial I/O port (default 4800 bps) or a USB-to-serial converter.
I use it with my Ubuntu 10.04 Linux system for ntp timekeeping and for GPS position measurement using xgps and other software. See [...] and [...] for more information.
The 1 usec timing precision is nice, but with common PCs and operating systems, your software timing is subject to millisecond or greater fluctuations. The GPS clock does assure good long-term stability, however, independent of Internet connections.
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Garmin 18x LVC GPS Navigator UnitGARMIN 010-00321-36 GPS 18x LVC. The GPS 18x is a GPS sensor targeted to OEM clients for use in automotive, fleet vehicle, and electronics applications where a small, highly accurate GPS receiver is needed. This 12 parallel channel, WAAS enabled GPS receiver is available in either CMOS level serial or USB 2.0 full speed versions, and comes with an integrated magnetic base. The puck like receiver is 2.4 inches in diameter and weighs just ounces, making it an ideal solution in applications where space is at a premium. The GPS 18x is offered in three different cable configurations: A style USB, DB 9 pin serial with 12 volt cigarette lighter adapter /PC, or bare wire /LVC. The PC and LVC versions both default to output data in the industry standard NMEA 0183 data format, but may also be user programmed to output data in the GARMIN proprietary format. The USB version produces data only in the GARMIN proprietary format. All three versions of the GPS 18 come complete with non volatile memory for storage of configuration information, a real time clock, and raw measurement output data for sophisticated customer applications. The LVC version additionally provides a pulse per second logic level output whose rising edge is aligned to the UTC second within 1 microsecond. The USB 2.0 full speed version of the GPS18 is also compatible with USB 1.1 full speed hosts.
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