![Microchip Technology GridTime 3000 Скачать руководство пользователя страница 250](http://html1.mh-extra.com/html/microchip-technology/gridtime-3000/gridtime-3000_installation-manual_1786100250.webp)
Table 12-16. NMEA RMC Time Code Content Specification
Placeholder Content
$GPRMC
ASCII "$GPRMC"
,
ASCII "," (comma)
hh
UTC hour
mm
UTC minute
ss
UTC second
.
ASCII "." (full stop)
0
ASCII "0" (zero)
a
Status: ASCII "A" = valid, ASCII "V" = invalid
tttt.tttt
Latitude (degrees, minutes): "0000.0000" - "8959.9999" ASCII
N
Latitude (north/south): ASCII "N" = north, ASCII "S" = south
ggggg.gggg Longitude (degrees, minutes): "00000.0000" - "35959.9999" ASCII
W
Longitude (east/west): ASCII "E" = east, ASCII "W" = west
DD
UTC day of month, ASCII
MM
UTC month, ASCII
YY
UTC year: 2 digits representing the last two digits of the year, ASCII
E*
ASCII "E*" (E asterisk)
CC
2-digit hex representation of the result of XORing the 8 data bits of each character between, but not
including the "$" and "*". ("00"-"FF")
<CR>
Carriage return (HEX 0D)
<LF>
Line feed (HEX 0A)
Example:
$GPRMC,123456.00,A,1234.5678,S,12345.6789,E,0.0,0.0,230410,0.0,E* <CR><LF>
UTC time 12:34:56, valid, latitude 1234.5678 degrees south, longitude 12345.6789 degrees east, UTC date 23 April
2010
12.8
GNSS Receiver Specification
This section gives the specifications of the GNSS receiver connected to the GridTime 3000's antenna port.
Table 12-17. Supported Constellations
GPS
GLONASS
BeiDou
Galileo
L2C (1227.60 Mhz)
L2OF (1246 MHz +
k×437.5kHz, k = –7,..., 5,
6)
B2I (1207.140 Mhz)
E5 b/Q (1207.140 Mhz)
L1C/A (1575.42 MHz)
L1OF (1602 MHz +
k×562.5kHz, k = –7,..., 5,
6)
B1I (1561.098 MHz)
E1-B/C (1575.42 MHz)
Appendix A: Specifications
©
2022 Microchip Technology Inc.
and its subsidiaries
Manual
DS00004572A-page 250