User's Manual Part 2

CAS / Part No. 9000000

SYSTEM DESCRIPTION AND INSTALLATION MANUAL

34-43-20

15 Feb 2003

Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.

4--42

Table 4--4. XS--950 Data Link Transponder Interface Description (cont)

Connector Pin

Designation

Functional Description

J1--8, 9 XPDR ARINC 429 PDL BUS OUTPUT: (J1--8 [A], J1--9 [B])

This differential pair output is a high speed ARINC 429 bus (100k bits/second nominal)

used to output data from the transponder to the data loader. The standards for this

interface are defined in ARINC 615 “Airborne Computer High Speed Data Loader”.

These pins should be connected to pins 8 and 9 of the PDL cable interface.

J1--16 OUTPUT BUS SHIELD:

The shields from the output bus (J1--8, 9) should be connected to this pin.

J1--18 PDL LINK A:

Connect this pin to pin 18 of the PDL cable interface.

J1--19 PDL LINK B:

Connect this pin to pin 19 of the PDL cable interface.

J1--20, 22 115VacPOWEROUTPUT: (J1--20[H],J1--22[C])

These power output pins provide the 115 Vac operating power for the data loader.

NOTE: Only the 115 Vac version transponders provide this output. If a +28 Vdc version

transponder is installed, either the data loader must be able to operate from +28

Vdc or the data loader 115 Vac input power must be connected to a source

external to the transponder.

The 115 Vac (H) and 115 Vac (C) should be shielded or twisted and shielded with an

insulating jacket over the shield. The shield should be connected to chassis ground (pin

21).

J1--21 CHASSIS GROUND:

Connect 115 Vac power shields to this pin.

J1--37, 38 +28 Vdc POWER OUTPUT: (J1--37 [HI], J1--38 [LO])

These power output pins provide the +28 Vdc operating power for the data loader. These

pins are used only if the data loader operates from +28 Vdc.