User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
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Page 6−10
15 Dec 2005
(5) Transponder (XPDR) Status Page
Selection of code 0003 displays the XPDR Status page, Figure 6−5. This page
displays data for the transponder selected at the time the extended test mode was
entered.
AD−53901,SH4@
Figure 6−5. Typical Transponder (XPDR) Status Page
The message contents for the XPDR Status page are determined as follows:
XPDR #1 PASS Indicates PASS or FAIL status of the selected transponder
(XPDR #1 or XPDR #2) as indicated by the digital
transmission from that transponder. FAIL is displayed if no
data is received on the bus.
MODE S ADDR: 8E78A0H Indicates the Mode S address (in hexadecimal format) of the
selected transponder as determined by program pins at the
rear connector of the transponder. (See Note 1.)
PRESS. ALT 1133FT Indicates the last pressure altitude being reported by the
selected Mode S transponder before the TCAS system was
placed into STBY. This value is not updated while in extended
test mode.
ALT
REPORTING
ON Indicates current position of altitude reporting switch on Mode
S/TCAS control panel − ON or OFF.
S/W PN PS7021601−903 (See Note 2.)
NOTES:
1. If the transponder detects either all 1’s or all 0’s, the following message will appear
− ILLEGAL ADDRESS −. In addition, a fail message will appear on the front of the
transponder and on Extended Test. The message reads CHECK DISCRETE
ADDR WIRING ON XPDR PINS MP1A THROUGH MP3D.
2. The S/W PN information, line 8 of the display screen, displays general text supplied
by the ACSS ATDL transponder via label 356 (block transfer), which is equipped to
supply the text to the display. If a transponder is installed that does not have this
feature, line 8 is blank.