Hello Support
I finally got the installation manual
So here's the info as best as I can provide ( understand ) it.
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C. Pin 3; SDI 1/2
Pin 3 sets the Long-range Navigation System as primary or secondary. If the pin
is open, the ARINC 429 setup is for primary. If the pin is grounded, the ARINC
429 setup is for secondary. This pin is read each time the KLN 90B is turned on.
This pin is used only for dual long range navigation installations when a
KLN 90B is interfaced, through ARINC 429, as system #2.
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D. Pins 4 and 5; EFIS 429 Receiver Inputs
The KLN 90B receives information from the Electronic Flight Instrument System(EFIS) or KA 90 display adapter in GAMA 429 format on this input bus. This bus
should be left open if no EFIS or adapter is connected to the KLN 90B. For specific
label information refer to
Paragraph 1.3.1 in Section 1 of this manual.
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E. Pins 6 and 7; Radar Graphics 429 Receiver Inputs
The KLN 90B receives information from the Radar Graphics unit in GAMA 429
format on this input bus. This bus should be left open if no Radar Graphics unit
is connected to the KLN 90B. For specific label information refer to Paragraph
1.3.1 in Section 1 of this manual.
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F. Pins 8 and 9; Air Data 429 Receiver Inputs
The KLN 90B can receive information from the Air Data unit in GAMA 429 format
on this input bus. For specific label information refer to Paragraph 1.3.1 in Section
1 of this manual. If not used, these inputs must be connected to pins 23 and
24 respectively to eliminate unnecessary "air data fail" messages.
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H. Pin 13; RS 232 Out
The KLN 90B outputs data in RS 232 format on this pin. It can be used to interface
with certain types of ELT’s, fuel sensors, and moving map displays, and
fuel management systems. For specific label information, refer to Appendix A.
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O. Pins 23 and 24; GPS 429 Transmitter outputs
Pins 23 and 24 are the GPS ARINC 429 transmitter output port of the KLN 90B.
For specific label information transmitted on this bus refer to Paragraph 1.3.1 in
Section 1 of this manual.
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W. Pin 36; RS 232 In
Pin 36 is the RS 232 input. If there is not an RS 232 input, i.e. a Fuel Management
or Air Data sensor connected to the KLN 90B, Pin 36 (RS 232 In) should
be connected to Pin 13 (RS 232 Out) to eliminate unnecessary "NO RS-232 DATA"
messages.
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Sorry about the long post but I thought I would provide more info than not enough.
I could send you the manual if required.
Thanks
Bruno