INNER MODULE 2A1A2

TM 11-6625-3081-23 1-12. DESCRIPTION OF DAYSIDE TEST BENCH 2A1 (cont) 1-12 d. INNER MODULE 2A1A2 The inner module 2A1A2 is an assembly made up of heavy gauge, (1.24 inch thick), aluminum alloy. The unit is positioned inside the dayside test bench cabinet on 12, zinc-plated, elastomer isolators (maximum load rating of 250 lb each). These isola- tors, six on the left side and six on the right side, secure the inner module to the inner walls of the dayside cabinet. Two grounded terminal-bonding connections protect against radio frequency interference. One is a jumper assembly which connects the cabinet to the inner module, while the other connects the inner module to the laser cover assembly. An access plate, located above the laser cover assembly, contains two indicating desiccator assemblies. The purpose of the inner module is to provide an enclosed test cell (platform) for the dayside collimator electrical and optical assemblies. Items installed on the inner module include: Optics assembly 2A1A2A1 Shutter assembly 2A1A2A2 Radiometer assembly 2A1A2A3 Dayside sensor mount assembly 2A1A2A4 Laser fold mirror assembly 2A1A2A6 Filter wheel/motor assembly 2A1A2A1O Lampholder assembly 2A1A2A11 Automatic focus control assembly 2A1A2A12 Beam sampler 2A1A2A13 Cable entry panel 2A1A2A17 Laser protective cover assembly 2A1A2A19 (1) The optics assembly 2A1A2A1 contains the laser test module and three cable assemblies with sensors. Contained in the laser test module are a camera (General Electric model TN 2500 CID Matrix Array). The camera is used to measure the laser beam divergence (spread) using an array of photodetectors. (2) The shutter assembly 2A1A2A2 is located on the front side of the dayside test bench assembly. It contains ‘a solenoid and arm assembly, a cable assembly 2A1A2A2W4 containing two optical switches and various mechanical parts required for operating the eight, interlinked shutter blades. Two connectors J1 and J2, located on the shutter assembly connector mounting plate, provide the power source and control voltages for shutter assembly operation. The shutter assembly provides a protective cover for inadvertent laser firing and an opening for interfacing the dayside test bench with the TADS day sensor assembly UUT. Change 4 1-41