GPS
Product series
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HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
13
will be output within a few hundred ms after the 1 PPS pulse is output and will
tell the time of the pulse that just occurred.
Table 4-12 contains the values for the following example:
$GPZDA,181813,14,10,2003,00,00*4F
Table 4-12 ZDA Data Format
Name
Example Units
Description
Message ID
$GPZDA
ZDA protocol header
UTC Time
181813
Either using valid IONO/UTC or
estimated from default leap seconds
Day
14
01 TO 31
Month
10
01 TO 12
Year
2003
1980 to 2079
Local zone hour
00
knots
Offset from UTC (set to 00)
Local zone hour
00
Offset from UTC (set to 00)
Checksum 4F
<CR> <LF>
End of message termination
4.2 RTCM Received Data
The default communication parameters for DGPS Input are 9600 baud, 8
data bits, stop bit, and no parity. Position accuracy of less than 5 meters can be
achieved with GR-90 by using Differential GPS (DGPS) real-time pseudo-range
correction data in RTCM SC-104 format, with message types 1,2, or 9. As
using DGPS receiver with different communication parameters, GPS-82 may
decode the data correctly to generate accurate messages and save them in
battery-back SRAM for later computing.
TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:[email protected] Website:www.holux.com.tw
