CSI Wireless GBX, Справочное руководство

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GBX Reference Manual
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4.8.8 ZDA Data Message (All except GBX-12R)
The ZDA message contains Universal Time information. Table 4-9
breaks down the ZDA data message into its components. This
message has the following format:
$GPZDA,hhmmss.ss,dd,mm,yyyy,xx,yy*cc<CR><LF>
Table 4-9 ZDA Data Message Defined
Field Description
hhmmss.ss UTC time in hours, minutes, seconds of the GPS position
dd Day, dd = 0 to 31
mm Month, mm = 1 to 12
yyyy Year
xx Local zone description in hours, xx = -13 to 13
yy Local zone description in minutes, yy = 0 to 59
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