Airmar LB150 User Manual
Page 31
LB150 WeatherStation Technical Manual revision 0.013
Proprietary and Confidential
PRELIMINARY - DRAFT
28
NMEA 0183 TRANSMITTED SENTENCE
$GP
ZDA
Summary
NMEA 0183 standard Time and Date.
Syntax
$GPZDA,<1>,<2>,<3>,<4>,<5>,<6>*hh<CR><LF>
Fields
<1>
UTC time of day, in the form hhmmss
<2>
UTC day, 01 to 31
<3>
UTC month, 01 to 12
<4>
UTC year (four digits, e.g. 2006)
<5>
Local time zone hours, 00 to +/-13 hrs
<6>
Local time zone minutes, 00 to +59
Default State
Enabled. Transmitted once per second.
Notes
This sentence may be enabled or disabled via the $PAMTC,EN,ZDA command.
Local time zone is the magnitude of hours plus the magnitude of minutes added,
with the sign of local zone hours, to local time to obtain UTC. Local zone is
generally negative for East longitudes with local exceptions near the International
Date Line.
Examples:
At Chatham Is. (New Zealand) at 1230 (noon) local time on June 10,
1995:
$GPZDA,234500,09,06,1995,-12,45*6C<CR><LF>
In the Cook Islands at 1500 local time on June 10, 1995:
$GPZDA,013000,11,06,1995,10,30*4A<CR><LF>
In the LB150, the local time zone is not changeable via the NMEA 0183 interface.