Honeywell CAS-100 Maintenance Manual page 129

Table 20. CTA-100A Control Unit Controls and Indicators (cont)
Control/Indicator
(See Figure 12)
Mode Select Switch
(cont)
ALT OFF Position
ALT ON Position
TA Position
TA/RA Position
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
The STANDBY/On discrete output is set to ON for the set
transponder. BIT 11 of ARINC label 016 is set to 1 to inhibit
altitude reporting.
The STANDBY/On discrete output is set to ON for the set
transponder. BIT 11 of ARINC label 016 is set to 0 to enable
altitude reporting.
In-Flight - Turns on the Mode S transponder to full on condition and
puts the TCAS in TA ONLY mode (traffic advisory only mode)
(TCAS sensitivity level No. 2). The Mode S transponder transmits
squitters and replies fully to Mode S, ATCRBS Mode C, and Mode
A interrogations. The TCAS broadcasts and does all Mode S and
ATCRBS surveillance and tracking functions. The TCAS gives the
traffic displays for TA, proximity, and nonthreat category aircraft
(NOTE 2. for exception), but does not categorize or show one
aircraft as a RA threat symbol. The TCAS gives the traffic advisory
alerts, but does not give resolution advisory alerts (for example,
voice RA alerts or RA indications on the traffic display are not
given). A TA ONLY annunciation comes into view on the traffic
display.
On-the-Ground - The Mode S transponder squitters and replies
fully to Mode S interrogations. Depending on transponder
strapping, transponder replies fully or does not reply to ATCRBS
Mode C and Mode A interrogations. Depending on the TCAS
strapping, TCAS goes into TA ONLY mode or STANDBY mode
(traffic display screen is erased but for a TCAS STBY mode
annunciation shows on the traffic display).
In-Flight - Turns on the Mode S transponder to full on condition. If
own aircraft is above 500 feet AGL, the TCAS goes into sensitivity
level No. 4 through No. 7 dependent on own aircraft altitude (refer
to Table 7). The Mode S transponder transmits squitters and
replies fully to Mode S, ATCRBS Mode C, and Mode A
interrogations. The TCAS broadcasts and does all Mode S and
ATCRBS surveillance and tracking functions. The TCAS gives
traffic displays for RA, TA, proximity, and nonthreat category
aircraft (NOTE 2.), issues RA and TA alerts, and gives resolution
advisories on the TA/VSI or RA/VSI. A TA/RA annunciation shows
on the PPI or dedicated traffic display. A mode annunciation is not
given on the TA/VSI for TA/RA mode.
Function
34-45-47
Page 100
1 Dec 2003