GPSPCI and GPSISA TIME SYNCHRONIZATION CARDS 2484 West Clay Street St. Charles, MO 63301 636 724 3666 Fax: 636 724 3776 www.masterclock.
TABLE OF CONTENTS DISCLAIMER ...................................................................................................................... b ADVISORY NOTICE............................................................................................................ b INTRODUCTION................................................................................................................. 1 GPS Satellites .............................................................................................
DISCLAIMER The information contained in this document is subject to change without notice. Masterclock®, Inc. (hereinafter Masterclock) makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Masterclock shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
INTRODUCTION The GPSPC is a PCI or ISA PC card that provides very stable accurate time and date information for a Windows/NT PC. The card receives reference time information from Atomic Clocks in the GPS (Global Positioning System) satellites. GPS SATELLITES The GPS satellites are operated and maintained by the US Department of Defense and allow for the precise determination of local time and location at any point on (or above) the Earth.
satellite acquisition and lock (generation of time information by the GPSPC). It is possible that the system will operate indoors and under other obstructions. However this can only be determined empirically; it is not guaranteed. If a longer cable is required, cables of various lengths (up to 500 feet) with pre-amplified antennas are available from Masterclock. Bringing the GPSPC up for the first time with an indoor antenna may prevent or significantly increase the time to first fix.
DB-9 CONNECTIONS Pin 1 - Pulse Out TTL-level 100ms active low pulse generated once per second by the GPS receiver. The negative-going edge of the pulse is aligned with UTC (Greenwich Mean Time) when the receiver has a 3-dimensional GPS satellite fix. This pulse is not available when the GPSPC is first powered on. The pulse may become unavailable if the receiver loses GPS satellite fix for an extended period of time. Accuracy of this pulse (when synchronized to GPS satellite) is nominally +/- 1us.
Although changing the GPS antenna or coaxial cable is not technically difficult, you are on your own should you decide to make such changes. We do not warrant or support operation with any hardware not installed or supplied by us. ANTENNA COAXIAL CABLE The coaxial cable should not be crushed, crimped or bent at a sharp angle nor should it be strained by pulling. Any damage to the cable could result in the GPSPC not functioning properly.
SPECIFICATIONS OUTPUT TIMING CHARACTERISTICS Reference:.................................UTC/GMT (default) Date Short term accuracy.................+/- 10 µs Long term stability...................same as GPS atomic clock POWER SUPPLY REQUIREMENTS Contains its own CPU and requires only DC power from the PC PHYSICAL 1/3 slot AT/PCI card OPERATING TEMPERATURE Temperature..............................0 to +70 ° PRE-AMPLIFIED ANTENNA Frequency.................................1575 MHz ± 10 MHz Polarization ......
OPTIONS TCRSYNC-NTP Software GPSPC ANTENNA OPTIONS PKG –1 PKG –2 PKG –3 PKG -4 GPSPC 2/17/2003 NTP Time Server Software for use with GPSPC, MCRPC, and TCR500 PC cards. GPSPC with 100'/30m, ¼"/.6cm Coax GPSPC with 150'/45m, ¼"/.6cm Coax GPSPC, 200'/61m - ½" Coax, 2 each N to TNC Adapters GPSPC, 250'/75m - ½" Coax, 2 each N to TNC Adapters 6 Masterclock, Inc.
LIMITED WARRANTY This Masterclock Inc. (hereinafter Masterclock) product warranty extends to the original purchaser. Masterclock warrants the GPSPC against defects in materials and workmanship for a period of one year from date of sale. If Masterclock receives notice of such defects during the warranty period, Masterclock will, at its option, either repair or replace products that prove to be defective.
