1-13. DESCRIPTION OF TEST CONSOLE TEST BENCH 2A2 (cont)
e. OPTICAL SIGNAL GENERATOR (OSG) 2A2A3
(1) The OSG is an electro-optical test chassis that provides a platform, light
source and target image for testing the TADS television sensor assembly, TADS visual
multiplexer assembly, and PNVS visual relay/multiplexer assembly UUTs. It is located
in the test console test bench below the VHF connector panel, and consists of a drawer
assembly, electro-optical assemblies, a front panel with UUT mounting platform, and
Drawer slides allow extension of the assembly away from the cabinet for
access to the electro-optical assemblies.
A cover and gasket assembly provides a dust
free area for the optical assemblies.
(2) The front panel contains the following assemblies:
Mounting leveling plate
Adapter plate (PNVS visual relay/multiplexer assembly)
Camera focusing support assembly
Camera support assembly
(a) The mounting leveling plate which extends above the OSG height dimension
is part of the mounting plate arrangement for supporting the TADS visual multiplexer
(b) The adapter plate is used for holding the PNVS visual relay/multiplexer
assembly in place.