of the rack. Figure 1-2 defines the function of each pin in the 26 pin HD-DSUB connector (J102) located above the 37 pin connector at the back of the rack. Figures 1-3 and 1-4 defines the interconnects between the rack and other instruments. The following interfaces are provided.

1.2.3.1 37 PIN CONNECTOR (J101)

CDI:

Capable of driving up to three 1000 ohm parallel

(Pins 1 and 4)

loads, +150 millivolts full scale deflection with a

 

maximum output of +300 millivolts.

To/From:

Capable of driving up to three 200 ohm parallel

(Pins 2 and 4)

loads, +82 millivolts full scale deflection.

 

Units with Mod Status 1: +190 millivolts full scale deflec-

 

tion.

Nav Flag:

Capable of driving up to three 1000 ohm parallel

(Pins 3 and 4)

loads, 375 millivolts for flag out-of-view, and

 

+40 millivolts for flag in-view.

OBI data:

Output providing bearing to waypoint data for a

(Pins 7, 8, and 23)

Bendix/King RMI (KI 229 or equivalent).

Message annunciator:

Output capable of driving negative logic message

(Pin 20)

annunciators by sinking up to 500mA.

RS232 chan 1 output data: Output capable of driving devices as listed in Section 4.

(Pin 24)Conforms to the EIA specification RS-232C.

RS232 chan 2 output data: Output capable of driving devices as listed in Section 4.

(Pin 19)Conforms to the EIA specification RS-232C.

RS232 chan 1 input data:

Input capable of receiving data from devices listed in

(Pin 17)

Section 4. Conforms to the EIA specification RS-232C.

Arrival annunciator:

Output capable of driving negative logic annunciator

(Pin 12)

by sinking up to 500mA.

GPS approach active ann:

Output capable of driving negative logic annunciator

(Pin 13)

by sinking up to 500mA. See GNC 300 Pilot's Guide,

 

(GPN 190-00067-00), for more information.

GPS approach arm ann:

Output capable of driving negative logic annunciator

(Pin 28)

by sinking up to 500mA. See GNC 300 Pilot's Guide,

 

(GPN 190-00067-00), for more information.

ARINC 429 Output A & B: Output capable of interfacing with any device that has

(Pins 15 and 16)

an input conforming to the GAMA ARINC 429 (low

Av. Kit Install. Manual

speed) specification.

190-00067-02 Rev. J

 

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