Garmin GDL 88, Installation Manual

Page: 39 / 44

GDL 88 TSO Installation Manual Page B-3
190-01122-00 Rev. A
B.1.4 Shadin Altitude Sentence
The GDL 88 is capable of receiving the following 17-byte message from Shadin Altitude Encoders,
Altitude Serializers, and Altitude Converters:
RMS<sp><+/->12345T<+/->12ul<CR>
Where:
RMS ASCII characters
<sp> space (0x20)
<+/-> sign indicator (0x2b["+"] or 0x2d["-"])
12345 altitude in feet
T ASCII character
<+/-> sign indicator
12 sensor temperature
ul checksum of bytes 1 through 14 in hex ASCII (i.e., "FA")
<CR> carriage return (0x0d)
Note : Checksum is calculated by adding each byte in the message (1 through 14).