User's Manual

Table Of Contents
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 4-4: Thales 41-Pin VSI-TCAS Interface Description (cont)
Connector
Pin
Designation
Functional Description
J1-32
CONFIGURATION STRAP #0 INPUT (NO):
See pin 31.
J1-33
CONFIGURATION STRAP #1 INPUT (NO):
See pin 31.
J1-34
CONFIGURATION STRAP #2 INPUT (NO):
See pin 31.
J1-35
CONFIGURATION STRAP #4 INPUT (NO):
See pin 17.
J1-36
SECONDARY ANALOG ac INPUT (LO):
ARINC 565 ADC
J1-37
SECONDARY SOURCE SELECT DISCRETE INPUT (NO):
See pin 31.
J1-38
VERTICAL SPEED VALID DISCRETE OUTPUT (NO):
This validity discrete is representative of the operation of the vertical speed
channel.
The state of this discrete corresponds to an invalid state (OPEN) if :
The indicator is not energized
The indicator is in the initialization phase on power up
The vertical speed failure warning flag is in view (case of internal or external
failures)
The self-test/display test pin is activated.
Definition of the OPEN state: Impedance in relation to the dc common greater than
100k ohms (open collector with an applicable voltage of +14 V dc to +32 than 100k
ohms (open collector with an applicable voltage of +14 V dc to +32 V dc).
A valid state is indicated by either:
1) A GROUND state characterized by a voltage of less than 3.5 V dc in relation to
dc commons with a maximum current of 20 mA, when the following types of
vertical speed are selected:
- Pneumatic input
- Digital inputs (per ARINC 429 HS or LS and digital ARINC 575).
or
2) A dc output voltage (+ 28 V dc nominal), the minimum value of which is equal to
VIN - (2 + 200 x I), where VIN is the greater of the primary vertical speed and
secondary vertical speed voltages available and I the output current expressed
in amps (0.02 A max.). This type of signal is present on the output when the
following types of vertical speed are selected:
- ac analogue input (ARINC 565)
- dc analogue input (ARINC 575).
4-78
04 Nov 2014
34-45-29
Pub. No. 8600200-001, Revision 004
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