User's Manual

Table Of Contents
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 4-6: ACSS 55-Pin VSI/TRA Interface Descriptions (cont)
Connector Pin
Designation
Functional Description
J1-4
BOOTSTRAP REFERENCE OUTPUT:
This output sends the bootstrap ARINC 565 ac reference voltage to the
cross-side display. The output is connected to the Secondary 26-V ac
Reference Input (pin 7) of the cross-side display.
J1-5
VERTICAL SPEED NO.2 VALID DISCRETE INPUT:
This discrete input receives bootstrap ARINC 565 vertical speed valid
data from the cross-side display. The input is connected to the Vertical
Speed Output (pin 49) of the cross-side display.
J1-7
SECONDARY 26-V ac REFERENCE INPUT:
This input receives the bootstrap ARINC 565 ac reference voltage from
the cross-side display. The input is connected to the Bootstrap
Reference Output (pin 40) of the cross-side display.
J1-8
VERTICAL SPEED +dc REFERENCE INPUT:
See pin 2.
J1-9
PRIMARY VERTICAL SPEED 26-V ac, 400-HZ REFERENCE INPUT:
See pins 10, 11.
J1-12
VERTICAL SPEED NO.1 VALID DISCRETE INPUT:
The VSI/TRA receives a 28-V dc signal from an ARINC 575 or 565 air
data computer indicating its valid operation. An “Open” at this pin
indicates an invalid vertical speed signal from ADC #1. This pin is only
used when pins ( 2, 3, 8) or (9, 10, 11) are used and on the #1 VSI/TRA
display. Also see pins 2, 10, and 11.
J1-13,14
R/C BOOTSTRAP OUTPUT: [J1-14 (HI), J1-13 (LO)]
This two-wire bus output sends ARINC 565 vertical speed data to the
cross-side display when the bootstrap mode is activated. These pins are
connected to the ARINC 565 Secondary Vertical Speed Input bus on the
cross-side display as follows:
J1-14 of the on-side display is connected to J1-6 of the cross-side
display.
J1-13 of the on-side display is connected to J1-1 of the cross-side
display.
J1-15
BOOTSTRAP COMMAND OUTPUT:
This pin is connected to the Source Select #2 (SS2) discrete input, pin
29, within the VSI/TRA. The output provides an Open/28 V dc discrete
that can be used to annunciate the bootstrap function. This output is
normally not used.
4-86
04 Nov 2014
34-45-29
Pub. No. 8600200-001, Revision 004
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