TM00358 Rev. A
Chapter 5 - BIT Error Codes
L-3 WESCAM
October 2007
All Rights Reserved
93
6.6
Focus Servo Failure
MAJOR
Focus servo loop of IR sensor not
responding properly.
No focus control available for IR
sensor.
Execute a BIT from the Level 2 IR
Menu. If failure persists, replace
turret.
6.7
FOV Position Error
MINOR
FOV elements failed to reach
specific position in a specific time.
Verify that FOV can be changed. If
FOV control loss impacts mission,
replace turret.
6.8
FOV Control Failure
MAJOR
Zoom servo loops of IR sensor not
responding properly.
No zoom control available for IR
sensor. If mechanism is between
zoom positions, it will not produce
usable video. If mechanism is stuck
at a zoom position, that focal length
will be the only one available.
Execute a BIT from the Level 2 IR
Menu. If failure persists, replace
turret.
6.11
TEC Position Error
MINOR
TEC elements failed to reach a
specific position in a specific time.
TEC position error should only
occur if a fault arises during a 2-
Point calibration.
Verify that IR imagery is well
corrected after a 2-Point calibration
is completed. If not, cycle the turret
power and apply only a 1-Point
calibration. If problem persists
replace turret.
6.12
TEC Servo Failure
MAJOR
TEC servo loop of IR sensor not
responding properly.
If mechanism is between positions
or at the calibrate position, it will not
produce usable video. If it is at the
normal setting, some focal lengths
are available. However, a 2-Point
calibration cannot be performed.
Execute a BIT from the Level 2 IR
Menu. If failure persists, replace
turret.
6.13
Not Communicating
MAJOR
Processing electronics not
communicating with IR Video
Processor. There will be no video
from IR sensor.
Execute a BIT from the Level 2 IR
Menu. Perform steps in the Fault
Isolation Trees.
6.14
Calibration Failure
MINOR
Calibration procedure failed.
Retry calibration. If a second failure
occurs, change Scene Setup from
Default to High and retry calibration.
If calibration procedure failure
continues, use the system
uncalibrated and replace turret at
next convenient opportunity.
6.16
WAE Not
Communicating
MAJOR
IR VP failing to communicate with
WAE (resides at IR sensor within
gimbal).
No video from IR sensor.
Execute a BIT from the Level 2 IR
Menu. Perform steps in the Fault
Isolation Trees.
Table 5-5 Failure Descriptions for 6.x BIT Codes (Continued)
BIT
#
Message
Category
Failure Description
Recommended Action
