User's Manual Part 2

CAS / Part No. 9000000

SYSTEM DESCRIPTION AND INSTALLATION MANUAL

34-43-20

15 Feb 2003

Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.

6--11

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 1s or all 0s, 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.