Tpa-100A Tcas Processor; System Leading Particulars; Tcas Surveillance Volumes; Range Tracking Volumes - Honeywell CAS-100 Maintenance Manual

B. TPA-100A TCAS Processor
Table 5 lists the available configurations of the TCAS processor and the related features.
Table 6 contains or references a short description of the processor features that are not
self-explanatory.
Table 5. TPA-100A TCAS Processor, Available Configurations
Part
Numbers
940-0300
Basic
and
Unit
940-0400
-001 X
Feature
Basic Unit

3. System Leading Particulars

A. TCAS Surveillance Volumes
Surveillance volume is that volume of airspace for other aircraft with Mode S or ATCRBS
transponders that are tracked by own aircraft TCAS.
(1)

Range Tracking Volumes

The shape and size of the range tracking volume depends on:
• If Mode S or ATCRBS transponders are being interrogated
• If tracking is occurring on a directional or OMNI antenna
• The attenuation levels applied to the transmitted pulses from the TCAS processor's
transmitter.
NOTE: The TCAS processor decreases range tracking volumes in high density areas to
decrease the number of receptions to be processed by TCAS and for
interference limiting.
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
MAINTENANCE MANUAL
CAS-100 COLLISION AVOIDANCE SYSTEM
Table 6. TPA-100A TCAS Processor Features
Supplies primary function and control for CAS-100.
Long range active surveillance.
Passive (ADS-B) only surveillance.
DTIF (Strap selectable).
ARINC 615-3 DL.
PCMCIA.
Front panel LCD maintenance interface.
4 or 6 MCU.
Features
Description
34-45-47
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1 Dec 2003