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Copernicus GPS Receiver 193
TRIMBLE ASCII INTERFACE PROTOCOL (TAIP) B
AL Altitude/Up Velocity
Note – The first character of altitude or vertical velocity (S) is “+” or “-”.
Data String Format:
AAAA(S)BBBBB(S)CCCDE
.
Altitude is above mean sea level in WGS-84. The GPS time of day is the time of fix
rounded to the nearest second. This message contains data obtained from the last 3
dimensional fix and may not be current.
Note – The data in this message is to be considered invalid and should not be used if
the Age of Data Indicator is equal to 0 (signifying data not available).
Item # of Char Units Format Value
GPS Time of Day 5 Sec AAAAA
Altitude 6 Meter (S)BBBBB
Vertical Velocity 4 MPH (S)CCC
Fix Mode 1 n/a D 0=2D GPS
1=3D GPS
2-8 reserved
9=no fix avail.
Age of Data
Indicator
1 n/a E 2=Fresh,<10 sec.
1=Old,>10 sec.
0=Not available
Total # of Characters is 17