Trimble Outdoors SK8 - Manual (Page 154)

C-8 Lassen-SK8 Embedded GPS Module
Trimble ASCII Interface Protocol (TAIP)
C.6 AL Altitude/Up Velocity
Data String Format:
AAAAABBBBBBCCCCDE
Table C-6. Altitude/Up Velocity Data String Descriptions
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).
C.7 AM Alarm
Lassen-SK8 does not support this TAIP message.
Item # of Char UNITS Format Value
GPS Time of day 5 Sec AAAAA
Altitude 6 Meter BBBBBB
Vertical Velocity 4 MPH CCCC
Source 1 n/a D 0 = 2D GPS
1 = 3D GPS
2 = 2D DGPS
3 = 3D DGPS
6 = DR
8 = Degraded DR
9 = Unknown
Age of Data Indicator 1 n/a E 2 = Fresh, <10 seconds
1 = Old, >10 seconds
0 = Not available
Total 17