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B KLN 94
Rev. 4, Jan/2003 10599I04.CDL Page A-9
FUEL FLOW & AIR DATA CONFIGURATION
The fuel flow and air data equipment configuration can be setup on MNT 1 page.
1. Fuel flow equipment installed and Air data equipment not installed:
Any the above formats may be received. If format C or D is received, the airdata portions are
ignored, the fuel data portions are used, and no error message is given.
FORMAT D (121 BYTE ASCII STRING)
BYTE DESCRIPTION / FORMAT
1-
107
Same as Format C described above except that bytes 3 through 9 shall be filled with
asterisks if total fuel remaining is not available and consequently must be entered
through the KLN 94.
108-
112
Barometric Setting (inches HG)
ASCII-coded decimal format (least significant digit is hundredth of inches), LSB first.
Example:
A barometric setting of 29.83 inches HG would be sent as “38.92” (33H, 38H, 2EH,
39H, 32H).
113 Barometric Setting Checksum
Break each decimal value into BCD representation. Using BCD arithmetic, sum the 4
BCD values and convert the lower-order BCD digit to an ASCII-coded numeric digit.
Example:
The checksum for a value of 29.83 would be “2” (32H).
114-
119
Baro-corrected Altitude (feet)
ASCII-coded decimal format with a sign character
Example:
A baro-corrected altitude of +11000 feet would be sent as “00011+” (30H, 30H, 30H,
31H, 31H, 2BH).
120 Baro-corrected Altitude Checksum
Sum for baro-corrected altitude bytes computed, excluding sign character, as for
pressure altitude.
121 EXT (ASCII code 03H)