SKY899
Installation Manual
Page 1-16 - General Information
009-11900-001
July 18, 2013
Revision F
Table 1-6: TRC899 Hardware Modifications
MOD
DESCRIPTION
A
Adds additional transient protection for the ±15 V dc display power lines. The only
equipment that connects to these lines is the WX-1000/SKY497 display. Refer to SB #107.
B
A production change that adds circuitry to the Input/Output PCB assembly to increase the
clock voltage level on U8 and U11 from 3 V dc TTL to 5 V dc CMOS level. Mod not required
for field units. Refer to SB #113.
C
A production change that replaces Q1 on the IF Demodulator PCB with a higher gain part.
Not required for field units. Refer to SB #125.
D
Adds the audio phrases, to U2, necessary for the ViP™ Extended Audio Callouts located in
Software Version 1.8. This changes the Input/Output PCB Assembly to P/N 812-11903-002.
Refer to SB805-11900-2.
E
Inspection modification to verify unapproved parts were not installed.
Refer to SB805-11900-3.
Table 1-7: TRC899 Software Revisions
SYSTEM
REVISION
SKY HP
VERSION
DESCRIPTION
1.4
1.05
Original production release.
1.5
1.06
Refer to Service Bulletin 102.
•
For Collins ProLine 4 transponder interface, corrects label 350 used by the
maintenance computer.
•
Corrects valid altitude limits for Collins ALT-50 and ALT-55 and King
KRA405 and KRA10/10A altimeter interface.
•
Corrects intruder heading for Meggit Magic Display System ARINC-429
heading interface.
1.6
1.07
Refer to Service Bulletin 116.
•
Corrects the use of the antenna calibration factor when using a bottom
mounted antenna.
•
Adds the detection of off-scale condition for the KRA-405 Radio Altimeter.
1.7
1.08
Refer to Service Bulletin 121.
•
Corrects tracking of non-altitude reporting intruders when own aircraft is
greater than approximately 6,200 feet.
•
Corrects the displayed status of the radio altimeter (valid/invalid) when an
offscale condition occurs (i.e., MSG annunciator will not appear on the CDU
when radio altimeter is offscale, unless the discrete flag line changes to
invalid).
•
Changes the displayed company logo and name to reflect new ownership by
L-3 communications.
1.8
1.09
Refer to Service Bulletin SB805-11900-1.
•
Adds ViP™ Extended Audio Callout feature.
•
Eliminates false failures during the transmitter power self-test by adjusting
the pass/fail parameters to the correct range.
The document reference is online, please check the correspondence between the online documentation and the printed version.