ISUAL Integration Test and Calibration H Heetderks NCKU

ISUAL Integration, Test, and Calibration H. Heetderks NCKU UCB Tohoku SDR 7 Jun 2000 I & T and Calibration H. Heetderks

ISUAL Test Plan • New Electronic Designs thoroughly Tested at Bread Board Level – – This includes all ISUAL electronics except the power system and DPU board All connectors and interfaces identical to flight Used for interface testing and initial functional tests DPU breadboard will be basis for the Instrument Simulation Device (ISD) • An Engineering Test Unit will be made for the Entire System – Has Form, Fit, Function of flight unit – Spectrophotometer ETU will have only two channels installed – ETU modules will be mixed and matched with both breadboard and flight systems to facilitate testing – ETU mechanisms will undergo long term life testing – ETU will get qualification level vibration and shock testing and T/V test – Extensive system level functional test done on ETU – ETU Units are upgraded to Flight status as design evolves • Flight Unit – – NCKU UCB Undergoes long term system functional testing Vibration and shock done to acceptance levels Thermal vacuum and thermal cycling at acceptance levels EMC test Tohoku SDR 7 Jun 2000 I & T and Calibration H. Heetderks 2

ISUAL System Functional Test • Starts with First Assembly of ETU Power System and DPU – Test begun with basic software functions only • Hardware and Software Grow together as Additional Parts are Added to the System • The Mature System at the ETU Level is then used as a Test Bed for Flight Boards and Subassemblies as they are Developed • System is used to Develop Test Procedures used for Verification during Environmental Testing • System is used to Build up Operating Hours on Flight Unit • Most Important Function is to Exercise the System in as closed to Flight like Conditions as Possible to Identify Subtle Errors and Interactions in the Hardware and Software NCKU UCB Tohoku SDR 7 Jun 2000 I & T and Calibration H. Heetderks 3

Integration and Test Flow Chart NCKU UCB Tohoku SDR 7 Jun 2000 I & T and Calibration H. Heetderks 4

Calibration Plan • ISUAL Functional Test System Used to Perform Calibration • Use Monochrometer and Standard Diodes to Determine the Wavelength response of each Photometer and the Imager using each of its Filters • Use a Collimated Light Source and Calibrated Manipulator to Measure the FOV of each Photometer and Image Distortion for the Imager • Use Diffuse Light source of known Emissivity for absolute photometric calibration • Fast light source will be used to measure time resolution • Primary Calibration of the Array Photometer will be Done by Tohoku. UCB will do a System Level Verification Check only NCKU UCB Tohoku SDR 7 Jun 2000 I & T and Calibration H. Heetderks 5

Test and Fabrication Facilities Used for ISUAL • SSL ESD Controlled Electronics Fabrication Area • SSL Large Thermal Vacuum Chamber • SSL Medium Thermal Vacuum Chamber • Bell Technologies Inc. Vibration Test Cell • TBD Commercial EMC Test Facility • Goddard Space Flight Center Radiation Test Facility • SSL Atmospheric Emissions Group Electronics Test Lab • SSL Atmospheric Emissions Group Optics Test Facility – Currently being set up • SSL Atmospheric Emissions Group Software Development Lab NCKU UCB Tohoku SDR 7 Jun 2000 I & T and Calibration H. Heetderks 6