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B KLN 94
Rev. 4, Jan/2003 10599I04.CDL Page A-10
2. Fuel flow equipment not installed and Air data equipment installed:
If format C or D is received, fuel data portions are ignored, the airdata portions are used and
no error message is given. If format A or B is received, the “GEN RS-232 In Data Error”
message is displayed.
3. Both fuel flow equipment and air data equipment not installed:
If no data is received for this setup, the “No GEN RS-232 In Data” message will be displayed.
Fuel/Air Data Timing Requirement
A grace period of 2.4 seconds, in addition to the 1.6 second transmission interval, shall be given
to every fuel/air data transmission. The unit invalidates all local copies if fuel/air data is not
received for 4.0 seconds ± .40 seconds.
2.0 GENERAL RS232 OUT
Functional Description
The order of transmission within each data byte shall be:
BYTE FORMAT
Electrical per EIA RS 232C
9600 baud, 8 bits, 1 stop bit, no parity
MARK is a logical 1 (one) and SPACE is a logical 0 (zero)
START bit begins as MARK, goes to SPACE
START bit
Data bit 0 (LSB)
Data bit 1
Data bit 2
Data bit 3
Data bit 4
Data bit 5
Data bit 6
Data bit 7 (MSB)
STOP bit