ABB Bomem Inc. 585 Charest Blvd. East, Suite 300 Québec, Québec G1K 9H4, Canada Phone (418) , Fax (418)

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1 585 Charest Blvd. East, Suite 300 Québec, Québec G1K 9H4, Canada Phone (418) , Fax (418) PROPRIETARY The information contained herein is proprietary to and should be considered a trade secret of It shall not be reproduced in whole or in part without the written authorization of

2 Test Report Document No: BOM Date: March 04, 2009 i Table of Contents 1. INTRODUCTION Scope of document Purpose of document Applicable Documents Acronyms GENERALITIES Test flow QA INSPECTION FUNCTIONAL INSPECTION SYSTEM LEVEL VERIFICATIONS AND SYSTEM TESTS Test Summary Tests Nominal FOV mapping Secondary FOV mapping Spectral range Spectral resolution Spectral stability Sampling rate Noise Pressure test SUMMARY...33 APPENDIX A APPENDIX B QA INSPECTION DOCUMENT...34 ILS CHARACTERIIZATION...38 Do not copy or distribute.

3 Test Report Document No: BOM Date: March 04, 2009 ii List of Figures Figure 1: Test flow chart... 7 Figure 2: FOV mapping of MCT for x axis before rework activities Figure 3: FOV mapping of MCT for x axis after rework activities Figure 4: FOV mapping of MCT for y axis before rework activities Figure 5: FOV mapping of MCT for y axis after rework activities Figure 6: FOV mapping of InSb for x axis before rework activities Figure 7: FOV mapping of InSb for x axis after rework activities Figure 8: FOV mapping of InSb for y axis before rework activities Figure 9: FOV mapping of InSb for y axis after rework activities Figure 10: FOV mapping of MCT for x axis before rework activities Figure 11: FOV mapping of MCT for y axis before rework activities (at 6.5 degrees above nominal FOV).. 18 Figure 12: FOV mapping of InSb for x axis before rework activities Figure 13: FOV mapping of InSb for y axis before rework activities (at 6.5 degrees above nominal FOV) Figure 14: Angle between nominal and secondary FOV Figure 15: MCT spectral range (raised cosine apodization) Figure 16: InSb spectral range (raised cosine apodization) Figure 17: ILS fitting of cm -1 before rework activities Figure 18: FWHM of cm -1 water vapour line before rework activities Figure 19: ILS fitting of cm -1 after rework activities Figure 20: FWHM of cm -1 water vapour line after rework activities Figure 21: ILS fitting of 1550 nm DFB laser diode after rework activities Figure 22: Spectral stability estimated from 1918 cm-1 water vapor line over 2 hours of operation Figure 23: Sampling rate of instrument at 1 cm -1 of resolution Figure 24: NESR of MCT between 950 to 1050 cm Figure 25: NESR of InSb between 2650 to 2750 cm Figure 26: Apparent temperature of MCT between 950 to 1050 cm -1 when observing a 50 o C scene Figure 27: NEDT of MCT between 950 to 1050 cm Figure 28: Apparent temperature of InSb between 2650 to 2750 cm -1 when observing a 50 o C scene Figure 29: NEDT of InSb between 2650 to 2750 cm Figure 30: Initial QA inspection (1/2) Figure 31: Initial QA inspection (2/2) Figure 32: Final QA inspection Do not copy or distribute. List of Tables Table 1: Functional inspections... 9 Table 2: Test Summary Table 3: FWHM of nominal FOV Table 4: FWHM of secondary FOV Table 5: Spectral limit of MCT and InSb channels Table 6: Fitting parameters of cm -1 before rework activities Table 7: Fitting parameters of cm -1 after rework activites Table 8: Fitting parameters of 1550 nm DFB laser diode Table 9: RMS NESR Table 10: RMS NEDT... 32

4 Test Report Document No: BOM Date: March 04, 2009 iii Table 11: Internal pressure of instrument Do not copy or distribute.

5 Test Report Document No: BOM Date: March 04, 2009 iv Document Change Record Issue Rev. Date Change Description 1 - March 04, 2009 First release of document Distribution List Recipient 1- Document Version ABB project team Met Office Do not copy or distribute.

6 Test Report Document No: BOM Date: March 04, INTRODUCTION 1.1 SCOPE OF DOCUMENT The scope of this document is to cover system level verifications and tests of instrument that follow January 2009 delivery under RMA number Results of previous deliveries (1995 & 2005) are also presented to compare instrument performances. 1.2 PURPOSE OF DOCUMENT The purpose of this document is to present system level verifications and test results of instrument that follow January 2009 delivery. System level verifications have one main goal (see Figure 1): - Perform initial characterization (before rework) of instrument to validate and quantify issues reported by the customer. System tests have one main goal (see Figure 1): - Perform final characterization (after rework) of instrument to validate system performances and to compare initial (before rework) and final (after rework) results. 1.3 APPLICABLE DOCUMENTS AD 1 AD 2 BOM Verification & Test Plan Flow Chart.vsd BOM Verification & Test Plan.doc 1.4 ACRONYMS DFB FOV FWHM ILS InSb MCT NEDT NESR PPM PSI Airborne Research Interferometer Evaluation System Distributed FeedBack Field Of View Full Width at Half Maximum Instrument Line Shape Indium Antimony Mercury Cadmium Telluride Noise Equivalent Delta Temperature Noise Equivalent Spectral Radiance Parts Per Million Pounds per Square Inche Do not copy or distribute.

7 Test Report Document No: BOM Date: March 04, QA RMA RMS ZnSe Quality Assurance Return Material Authorization Root Mean Square Zinc Selenide Do not copy or distribute.

8 Test Report Document No: BOM Date: March 04, GENERALITIES 2.1 TEST FLOW Figure 1 shows the test flow of instrument. There are six test activities and two integration activities. Initial QA inspection Functional inspection System level verifications Functional inspection System tests Rework activities Final QA inspection Packing & delivery Test activities Integration activities Figure 1: Test flow chart Do not copy or distribute.

9 Test Report Document No: BOM Date: March 04, QA INSPECTION QA inspections have been done before (initial inspection) and after (final inspection) rework activities of instrument. Inspection reports are attached in Appendix A. Do not copy or distribute.

10 Test Report Document No: BOM Date: March 04, FUNCTIONAL INSPECTION Table 1 presents functional inspections of instrument. Note that functional inspections have been performed before and after rework activities. Table 1: Functional inspections ID Description Goal Passed / Failed (before rework activities) Passed / Failed (after rework activities) 1 Connection / disconnection to / from instrument Verify integrity of cable connectors by connecting / disconnecting to / from instrument. Passed / Failed 1 Passed / Failed 2 Resolution setting Verify resolution selection using software (click on each resolution and verify the number of points). Passed / Failed Passed / Failed 3 Gain setting for both channels Verify gain selection using software (click on each gain and verify each spectrum signal amplitude). Passed / Failed Passed / Failed 4 Pointing mirror position setting Verify that mirror control is working properly using software (click on mirror position feature and select different positions). Passed / Failed Passed / Failed 5 Interferogram data acquisition and real time display Verify that interferogram is saving properly and that real time display is working properly. Passed / Failed Passed / Failed 6 Housekeeping/status data acquisition and real time display Verify that housekeeping status is saving properly and that real time display is working properly. Passed / Failed Passed / Failed 1 See initial inspection report on Figure 30. Do not copy or distribute.

11 Test Report Document No: BOM Date: March 04, ID Description Goal Passed / Failed (before rework activities) Passed / Failed (after rework activities) 7 Real time of raw or calibrated data (radiance, apparent intensity) Verify that raw or calibrated data are display properly in real time. Passed / Failed Passed / Failed 8 Data visualization of saved data (interferograms, raw or calibrated spectra, status) Verify that acquired interferograms can be transformed to spectrum and calibrate. Check also, if they can be display properly with their status. Passed / Failed Passed / Failed 9 Miscellaneous functionalities to ease data browsing and inspection Verify miscellaneous functionalities like ones find in Visualization and Curves Viewer tabs. Passed / Failed Passed / Failed 10 Shortcuts to ease manipulation of the software and instrument commanding (e.g. from the aircraft) Verify shortcuts. Passed / Failed Passed / Failed Do not copy or distribute.

12 Test Report Document No: BOM Date: March 04, SYSTEM LEVEL VERIFICATIONS AND SYSTEM TESTS 5.1 TEST SUMMARY Table 2 presents a summary of test results. Each test is described in section 5.2. Table 2: Test Summary Require ment ID 2 Section # Test Name Requirement Results Compliance Status R1a Nominal FOV mapping Total FOV shall be less than 3 degrees. Total FOV is less than 3 degrees for x and y axis for both channels. Compliant R1b Secondary FOV mapping Secondary FOV shall be inexistent. Secondary FOV is inexistent. Compliant R Spectral range Spectral range shall be < 500 cm -1 (lower limit) and > 2940 cm -1 (upper limit) at 1 % of relative amplitude for MCT and InSb respectively. MCT lower spectral limit at 1 % relative amplitude is 499 cm -1. InSb upper spectral limit at 1 % relative amplitude is 3160 cm -1. Compliant R Spectral resolution FWHM of cm -1 water vapor line shall be < 0.7 cm -1 (unapodized). FWHM of cm -1 water vapor line is 0.67 cm -1. Compliant R Spectral stability Spectral stability shall be 10 ppm over 2 hours of operation. Standard deviation of variation of cm -1 water vapour line position is 0.7 ppm. Compliant R Sampling rate Sampling rate: shall be 120 scans/min at 1 cm -1 of resolution. Sampling rate is 121 scans/min. Compliant 2 Requirement ID is defined in BOM Verification & Test Plan.doc Do not copy or distribute.

13 Test Report Document No: BOM Date: March 04, Require ment ID 2 Section # Test Name Requirement Results Compliance Status R Noise R Pressure test RMS NESR shall be < 3.5*10-7 W/(cm 2 sr cm -1 ) between 950 to 1050 cm -1 (MCT) and < 4.82*10-9 W/(cm 2 sr cm -1 ) between 2650 to 2750 cm -1 (InSb). RMS NEDT shall be < 0.2 K between 950 to 1050 cm -1 (MCT) and < 0.2 K between 2650 to 2750 cm -1 (InSb). Internal pressure of instrument shall remain constant (at 6 psi) over a period of 1 hour. MCT RMS NESR is 5.6*10-9 W/(cm 2 sr cm -1 ) between 950 to 1050 cm -1. InSb RMS NESR is 5.9*10-10 W/(cm 2 sr cm -1 ) between 2650 to 2750 cm -1. MCT RMS NEDT is 0.11 K. InSb RMS NEDT is 0.09 K. Pressure remains at 6 psi over one hour of operation. Compliant Compliant Do not copy or distribute.

14 Test Report Document No: BOM Date: March 04, TESTS Nominal FOV mapping Requirement: [R1a]: Total FOV shall be less than 3 degrees. Mapping of nominal FOV has been done for both channels (MCT and InSb) before and after rework activities. Figure 2 to Figure 9 show normalized response with respect to the angle for x axis and y axis. A red rectangular box has been drawn on each figure at 50 % of amplitude Relative amplitude Degree Figure 2: FOV mapping of MCT for x axis before rework activities Do not copy or distribute.

15 Test Report Document No: BOM Date: March 04, Relative amplitude Degree Figure 3: FOV mapping of MCT for x axis after rework activities Relative amplitude Degree Figure 4: FOV mapping of MCT for y axis before rework activities Do not copy or distribute.

16 Test Report Document No: BOM Date: March 04, Relative amplitude Degree Figure 5: FOV mapping of MCT for y axis after rework activities Relative amplitude Degree Figure 6: FOV mapping of InSb for x axis before rework activities Do not copy or distribute.

17 Test Report Document No: BOM Date: March 04, Relative amplitude Degree Figure 7: FOV mapping of InSb for x axis after rework activities Relative amplitude Degree Figure 8: FOV mapping of InSb for y axis before rework activities Do not copy or distribute.

18 Test Report Document No: BOM Date: March 04, Relative amplitude Degree Figure 9: FOV mapping of InSb for y axis after rework activities Table 3 indicates FWHM of nominal FOV for x and y axes of both channels. Table 3: FWHM of nominal FOV FWHM (before rework activities) FWHM (after rework activities) MCT x axis 38.0 mrad 39.6 mrad MCT y axis 38.2 mrad 40.5 mrad InSb x axis 37.8 mrad 38.4 mrad InSb y axis 40.0 mrad 41.7 mrad Secondary FOV mapping Requirement: [R1b]: Secondary FOV shall be inexistent. Mapping of secondary FOV has been done for both channels (MCT and InSb) before and after rework activities. Figure 10 to Figure 13 show normalized response with respect to the angle for x axis and y axis. A red rectangular box has been drawn on each figure at 50 % of amplitude. Do not copy or distribute.

19 Test Report Document No: BOM Date: March 04, Relative amplitude Degree Figure 10: FOV mapping of MCT for x axis before rework activities Relative amplitude Degree Figure 11: FOV mapping of MCT for y axis before rework activities (at 6.5 degrees above nominal FOV) Do not copy or distribute.

20 Test Report Document No: BOM Date: March 04, Relative amplitude Degree Figure 12: FOV mapping of InSb for x axis before rework activities Relative amplitude Degree Figure 13: FOV mapping of InSb for y axis before rework activities (at 6.5 degrees above nominal FOV) Do not copy or distribute.

21 Test Report Document No: BOM Date: March 04, Table 4 indicates FWHM of secondary FOV for x and y axis of both channels. Table 4: FWHM of secondary FOV FWHM (before rework activities) FWHM (after rework activities) MCT x axis 36.7 mrad Secondary FOV is non-existent MCT y axis 38.4 mrad Secondary FOV is non-existent InSb x axis 35.3 mrad Secondary FOV is non-existent InSb y axis 38.4 mrad Secondary FOV is non-existent Note: Data obtained during initial characterization indicates that the ratio between on-axis (direct beam) and offaxis (first reflected beam) FOV amplitudes is approximately 0.04 while theoretical value is 0.03 (calculated using a bare ZnSe substrate). Moreover, using a ZnSe entrance window with a wedge of 1.3 degrees, we simulated an angle of 6.4 degrees between nominal and secondary FOV as shown on Figure 14. ZnSe window (1.3 degrees of wedge) Secondary FOV 6.4 degrees Nominal FOV Figure 14: Angle between nominal and secondary FOV Do not copy or distribute.

22 5.2.3 Spectral range Test Report Document No: BOM Date: March 04, Requirement: [R2]: Spectral range shall be < 500 cm-1 (lower limit) and > 2940 cm-1 (upper limit) at 1 % of relative amplitude for MCT and InSb respectively. Spectral range has been measured for both channels (MCT and InSb). Figure 15 and Figure 16 show results of MCT and InSb respectively Relative amplitude Wavenumber (cm -1 ) Figure 15: MCT spectral range (raised cosine apodization) Do not copy or distribute.

23 Test Report Document No: BOM Date: March 04, Relative amplitude Wavenumber (cm-1) Figure 16: InSb spectral range (raised cosine apodization) Table 5 indicate spectral limit of MCT and InSb channels at 0 %, 1%, 5 % and 10 % of relative amplitude. Table 5: Spectral limit of MCT and InSb channels Description Measured at 0 % Measured at 1 % Measured at 5 % Measured at 10 % MCT lower spectral limit InSb upper spectral limit 455 cm cm cm cm cm cm cm cm Spectral resolution Requirement: [R3]: FWHM of cm-1 water vapor line shall be less than 0.7 cm -1. ILS has been characterized using cm -1 water vapor line and a 1550 nm DFB laser diode. Figure 17 to Figure 21 show theoretical ILS fit and measured ILS while Table 6 to Table 8 include parameters that have been used to fit theoretical ILS. Do not copy or distribute.

24 Test Report Document No: BOM Date: March 04, Residual [-] Fit [-] Theoritical ILS fit Measurement Wavenumber [cm -1 ] Figure 17: ILS fitting of cm -1 before rework activities Table 6: Fitting parameters of cm -1 before rework activities Fitting parameter Gas pressure (fix parameter) Gas temperature (fix parameter) Path length (fix parameter) H 2 O (fit parameter) Spectral stretch (fit parameter) FOV diameter (fit parameter) FOV off-axis diameter (fit parameter) Value kpa K 200 cm ppm 52.2 ppm 45.0 mrad 9.0 mrad According to Table 6, the effective FOV is equals to the design value of 45.0 mrad and the FOV is misaligned by 20 % of the FOV size. FWHM of cm -1 water vapour line is 0.72 cm -1 as shown on Figure 18. Do not copy or distribute.

25 Test Report Document No: BOM Date: March 04, Figure 18: FWHM of cm -1 water vapour line before rework activities Residual [-] Fit [-] Theoretical ILS fit Measurement Wavenumber [cm -1 ] Do not copy or distribute. Figure 19: ILS fitting of cm -1 after rework activities

26 Test Report Document No: BOM Date: March 04, Table 7: Fitting parameters of cm -1 after rework activites Fitting parameter Gas pressure (fix parameter) Gas temperature (fix parameter) Path length (fix parameter) H 2 O (fit parameter) Spectral stretch (fit parameter) FOV diameter (fit parameter) FOV off-axis diameter (fit parameter) Value kpa (20 PSI) K 200 cm ppm 11.5 ppm 45.0 mrad 1.9 mrad According to Table 7, the effective FOV is equals to the design value of 45.0 mrad, and the FOV is misaligned by 4 % of the FOV size. FWHM of cm -1 water vapour line is 0.67 cm -1 as shown on Figure 20. Figure 20: FWHM of cm -1 water vapour line after rework activities Do not copy or distribute.

27 Test Report Document No: BOM Date: March 04, Theoretical ILS fit Measurement a.u Wavenumber [cm -1 ] Figure 21: ILS fitting of 1550 nm DFB laser diode after rework activities Table 8: Fitting parameters of 1550 nm DFB laser diode Fitting parameter Value Laser wavenumber (fit parameter) cm -1 FOV diameter (fit parameter) FOV off-axis diameter (fit parameter) 45.4 mrad 1.9 mrad Shear (fit parameter) µm According to Table 8, the effective FOV is 0.9 % larger than the design value of 45.0 mrad, and the FOV is misaligned by 4 % of the FOV size. FWHM of laser line is 1.56 cm -1. See Appendix B regarding ILS characterization from Raphaël Desbiens Spectral stability Requirement: [R4]: Spectral stability shall be 10 ppm over a period of 2 hours. Spectral stability of instrument has been estimated from cm -1 water vapour line over two hours of operation. Estimated stability is 0.7 ppm rms over two hours of operation as shown on Figure 22. Do not copy or distribute.

28 Test Report Document No: BOM Date: March 04, Spectral shift (ppm) Scan number (@ 121 scan/min.) Figure 22: Spectral stability estimated from 1918 cm-1 water vapor line over 2 hours of operation Sampling rate Requirement: [R5]: Sampling rate shall be 120 scans/min at 1 cm-1 of resolution. Sampling rate is reported by software and monitored by firmware. Sampling rate is 121 scan/min as shown on Figure 23. Do not copy or distribute.

29 Test Report Document No: BOM Date: March 04, Figure 23: Sampling rate of instrument at 1 cm -1 of resolution Noise Requirement: [R6]: RMS NESR shall be < 3.5*10-7 W/(cm 2 sr cm -1 ) between 950 to 1050 cm -1 (MCT) and < 4.82*10-9 W/(cm 2 sr cm -1 ) between 2650 to 2750 cm -1 (InSb). RMS NEDT shall be < 0.2 K between 950 to 1050 cm -1 (MCT) and < 0.2 K between 2650 to 2750 cm -1 (InSb). NESR has been measured between 950 to 1050 cm-1 (MCT) and 2650 to 2750 cm-1 (InSb). Figure 24 and Figure 25 shown results while Table 9 indicates values. Do not copy or distribute.

30 Test Report Document No: BOM Date: March 04, E E-08 NESR (W/(cm 2 sr cm -1 ) 5.00E E E E Wavenumber (cm-1) Figure 24: NESR of MCT between 950 to 1050 cm E E E-09 NESR (W/cm 2 sr cm -1 ) 1.00E E E E E E Wavenumber (cm -1 ) Do not copy or distribute. Figure 25: NESR of InSb between 2650 to 2750 cm -1

31 Test Report Document No: BOM Date: March 04, Table 9: RMS NESR Spectral interval RMS NESR (W/(cm 2 sr cm -1 )) 950 to 1050 cm -1 (MCT) 5.6* to 2750 cm -1 (InSb) 5.9*10-10 Apparent temperature and NEDT have also been measured between 950 to 1050 cm-1 (MCT) and 2650 to 2750 cm-1 (InSb). Figure 26 to Figure 29 shown results while Table 10 indicates values of NEDT Apparent temperature (K) Wavenumber (cm -1 ) Figure 26: Apparent temperature of MCT between 950 to 1050 cm -1 when observing a 50 o C scene Do not copy or distribute.

32 Test Report Document No: BOM Date: March 04, NEDT (K) Wavenumber (cm -1 ) Figure 27: NEDT of MCT between 950 to 1050 cm Apparent temperature (K) Wavenumber (cm -1 ) Figure 28: Apparent temperature of InSb between 2650 to 2750 cm -1 when observing a 50 o C scene Do not copy or distribute.

33 Test Report Document No: BOM Date: March 04, NEDT (K) Wavenumber (cm-1) Figure 29: NEDT of InSb between 2650 to 2750 cm -1 Table 10: RMS NEDT Spectral interval RMS NEDT (K) 950 to 1050 cm -1 (MCT) to 2750 cm -1 (InSb) Pressure test Requirement: [R7]: Internal pressure of instrument shall remain constant (at 6 PSI) over a period of 1 hour. Table 11 indicates pressure value during two hours of operation. Elapsed time (hours) Table 11: Internal pressure of instrument Pressure psi psi psi Do not copy or distribute.

34 Test Report Document No: BOM Date: March 04, SUMMARY instrument was tested at ABB Bomem before shipment. Results of tests and compliance are summarized in Table 2. Do not copy or distribute.

35 Test Report Document No: BOM Date: March 04, APPENDIX A QA INSPECTION DOCUMENT Do not copy or distribute.

36 Test Report Document No: BOM Date: March 04, Figure 30: Initial QA inspection (1/2) Do not copy or distribute.

37 Test Report Document No: BOM Date: March 04, Figure 31: Initial QA inspection (2/2) Do not copy or distribute.

38 Test Report Document No: BOM Date: March 04, Figure 32: Final QA inspection Do not copy or distribute.

39 Test Report Document No: BOM Date: March 04, APPENDIX B ILS CHARACTERIIZATION Do not copy or distribute.

40 Test Report Document No: BOM Date: March 04, Do not copy or distribute.

41 Test Report Document No: BOM Date: March 04, Do not copy or distribute.

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47 Test Report Document No: BOM Date: March 04, End of document - Do not copy or distribute.