TM 11-6625-3081-23
2-14. MODULE DESCRIPTIONS (cont)
2-14
b. DAYSIDE TEST BENCH 2A1 (cont)
Input Code
DCVARF (cont)
PMTALIGN
IVDALIGN
IVD
IVDST
Description
The variable filter is then programmed off the home position and
motor status checked.
If the motor status is in error, a prompt is displayed at the
completion of the test.
The variable filter is then programmed back to the home position
and motor status checked.
If the motor status is in error, a prompt is displayed.
This module adjusts the brightness and contrast on an IVD for
proper settings (40 foot-lamberts). It then saves the settings
and-uses those values to set the brightness and contrast of an
IVD mounted in the OSA.
Then it uses the OSA-mounted IVD
calibration brightness to adjust the PMT for an output of
40 foot-lamberts.
This module tests the optical and electrical parameters of
internal IVD against their specifications, and performs
alignment of the IVD as necessary.
Effectivity:
Used with E/O bench equipped with OSA delete
only.
the
panel
This module tests the ability of IVD 2A1A3 to produce correct
outputs in response to function commands, and checks the OSA
delete panel internal wiring. An error detected during any
portion of the test will cause a prompt to be displayed at the
completion of the test.
Effectivity:
Used with E/O bench equipped with optical signal
analyzer only.
This module tests the ability of the indirect view display (IVD))
2A1A3 to produce correct outputs in response to function
commands.
An error detected during any of the following checks will
display a prompt at the completion of the test.
The optical signal analyzer (OSA) chassis to shield continuity
is checked for 10 ohms or less.
The OSA shutter interlock oper-
ation is verified by checking the shutter status with the OSA
door open (shutter closed).
Change 16
2-69
