Page 80
1 Dec 2003
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MAINTENANCE MANUAL
CAS-100 COLLISION AVOIDANCE SYSTEM
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Table 16. IVA-81A/D TA/VSI and IVA-81B RA/VSI Inputs and Outputs
(cont)
Source Or
Destination
I/O Signal
Name and Type
General
Description
VERTICAL RATE SOURCE RELATED I/O (cont)
Aircraft Digital ARINC 575
(Label 212) Rate Source
Altitude Rate Data. Digital ARINC
575. Low-speed ARINC 419
Same as above.
Aircraft Digital ARINC 419
(Label 212) Rate Source
Altitude Rate Data. Low-speed
digital vertical speed, ARINC 419.
Nonstandard ARINC 419 interface used
with a general aircraft that has an air
data computer which transmits ARINC
419 Label 212 at an internal rate slower
than the maximum of 67 milli-seconds.
Vertical Speed Source
Vertical Speed Valid Discrete
Supplies failure status from set analog
vertical rate source unit to the VSI.
ALTITUDE RATE OUTPUT
IVA-81A/D or IVA-81B
Digital Altitude Rate Output
Buffered altitude rate output for use by
remote indicators.
CONFIGURATION AND SOURCE SELECT STRAPPING RELATED I/O
Nine Configuration Straps
and Two Source Select
Straps on TA/VSI or
RA/VSI Rear Connector
CS0-CS8 Configuration Straps
and Source Select No. 1 and No.
2 Straps. Eleven discrete input.
Show the type of vertical rate source
input to the TA/VSI, RA/VSI, and other
system particulars.
POWER RELATED I/O
Own Aircraft Power
Supplies
115 V 400 Hz or 28 V dc
Supplies the primary power to TA/VSI
and RA/VSI.
LAMP TEST
Lamp Test Source
Lamp Test Discrete
IVA-81A/D turns on LCD display.
IVA-81B turns on TCAS eyebrow lights.
Own Aircraft Dimmer Bus
5 V ac or dc or 28 V dc
Controls panel background lighting on
TA/VSI and RA/VSI.