Multiprogramer

TM-11-6625-3081-23-1 Electronic Equipment Test Facility TADS/PNVS Augmentation Equipment Manual
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TM 11-6625-3081-23 1-23. DAYSIDE TEST BENCH 2A1 (cont) 1-23 (e) Multiprogrammer assembly 2A2A6 transmits programmed output signals (DC LASER LCW, DC LASER CH ON, DC LASER RESET) to the laser simulator CCA. A digi- tal to analog solid state output switch signal (LASER SIMULATOR) is sent. Analog signals (DC LASER PWR, DC LASER AMP, DC LASER SIM) are returned from the laser simulator assembly to the analog to digital converter assembly 2A2A13 and a LASER CH OUT signal is sent to the PPG #1 CCA in the electronics drawer assembly 2A2A7. (f) Translator (A8) consisting of two mirrors mounted on a single linear translator moves the mirrors into one of three positions to perform the following functions: Position 1 selects the path for laser beam divergence tests, direct view optics tests, and TV optics tests (dayside sensor tests). Position 2 selects the path for laser spot tracker sensitivity tests, laser range receiver tests, and laser path transmittance tests. Position 3 moves the mirrors out of the path to permit alinement functions. (g) The translator is driven by signals (DSMB (01-04) from the motor control driver CCA 2A2A7A6A1. Control signals (DSMB EN1, DSMB EN2) from motor mux CCA 2A2A7A6A3, select the translator positions. (h) Position of the translator is detected by three optical switches and transmitted to the motor mux CCA 2A2A7A6A3 on three lines (DSMB01, DSMB02, and DSMB03). (i) The CID video camera (A15) is used to measure laser beam divergence (spread) using an array of photodetectors. Video output is sent to the camera head/control unit 2A2A7A2, where the video images are changed to electrical signals. (3) Shutter Assembly 2A1A2A2. 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. (a) The DC SHUTTER OPEN signal from multiprogrammer assembly 2A2A6 is routed to relay assembly 2A2A7A4. When the relay (K4) is energized by a signal from FIFO CCA 2A2A7A6A5, the DC SHUTTER OPEN signal is routed to the shutter assembly solenoid and the shutter opens. A spring pulls the shutter vanes closed when the DC SHUTTER OPEN signal is removed. Change 1 1-145 (b) The DC SHUTTER OPEN and DC SHUTTER CLOSED signals from two optical switches are routed to the digital input cards in the multiprogramner assembly 2A2A6.

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