Adapter Panel Assembly 2A1A1

Photomultiplier Tube (PMT) Controller 1A7

Inner Module 2A1A2 - TM-11-6625-3081-23-1_228

TM-11-6625-3081-23-1 Electronic Equipment Test Facility TADS/PNVS Augmentation Equipment Manual
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TM 11-6625-3081-23 1-20. SYSTEM FUNCTIONAL DESCRIPTION (cont) 1-20 (b) The PMT, shutter, lens filter, and focus lens are under program control. The PMT housing is controlled by PMT controller 1A7. The photon emitter assembly is used during self-test and is under program control. (1.1) Adapter Panel Assembly 2A1A1. The adapter panel assembly (EO bench 00106 and up) is an electrical Interface used to route certain cable connections from inside the dayside test bench to its front panel. It contains no active components. (2) Inner Module 2A1A2. The inner module 2A1A2 provides an enclosed test cell for the dayside test bench electrical and optical assemblies. The inner module contains the following assemblies: Optics assembly 2A1A2A1 Shutter assembly 2A1A2A2 Radiometer assembly 2A1A2A3 Dayside sensor mount 2A1A2A4 Laser fold mirror assembly 2A1A2A6 Filter wheel/motor assembly 2A1A2A1O Lampholder assembly 2A1A2A11 Automatic focus control assembly 2A1A2A12 Beam sampler 2A1A2A13 Laser cover assembly 2A1A2A19 (a) The optics assembly contains the and charged induced device (CID) video camera. low-level laser energy for testing the sensitivity range receiver UUTS. laser simulator assembly, translator, The laser simulator assembly provides of the laser (b) The translator contains two mirrors, mounted on a driven by a stepper motor. The translator moves the mirrors to (c) The CID video camera is used to measure the laser (spread) using an array of photodetectors. The video output is spot tracker and laser linear translator, three positions. beam divergence sent to the camera head control unit in the electronics drawer assembly 2A2A7, where the video images are changed to electrical signals. (d) The shutter assembly is a safety device which prevents laser energy from escaping the inner module. It is opened by a solenoid, under computer command, during testing that uses the laser simulator or test lamp. Two optical switches sense the shutter open and shutter closed positions. The shutter is always closed during laser transceiver testing, If it is not closed, an interlock will prevent firing of the laser. (e) The radiometer assembly detects laser radiation from the UUT and trans- mits output signals to an output connector on the VHF cable entry panel 2A2A2. Using TPS cables, these signals are routed to an input connector on the programmable digi- tizer 2A2A1, where they are converted to digital data for analysis by the computer. The radiometer is used for making laser power tests, detecting missed pulses, deter- mining pulse width, and pulse-to-pulse energy stability. Change 9 1-123

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