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MEIDEX - Crew Tutorial Instrumentation Adam D. Devir, MEIDEX Payload Manager

MEIDEX - Crew Tutorial Instrumentation Adam D. Devir, MEIDEX Payload Manager. Payload Instrumentation. Sekai RSC-310 General View Components and Interfaces Operating Procedures Sekai ADVCR-101 General View Basic Interfaces Operating Procedures Vibration Tests

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MEIDEX - Crew Tutorial Instrumentation Adam D. Devir, MEIDEX Payload Manager

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  1. MEIDEX - Crew TutorialInstrumentationAdam D. Devir, MEIDEX Payload Manager MEIDEX - Crew Tutorial - Instrumentation

  2. Payload Instrumentation • Sekai RSC-310 • General View • Components and Interfaces • Operating Procedures • Sekai ADVCR-101 • General View • Basic Interfaces • Operating Procedures • Vibration Tests • Instrumentation and Avionics on AMP • Introduction • Payload Instruments • Xybion IMC • General View • Components • Basic Interfaces • Baffle, Optical Bench and Truss Mechanism • Optics • Principle of Operation • The MCP • Command Tree • Operating Procedures MEIDEX - Crew Tutorial - Instrumentation

  3. Introduction • The Mediterranean Israeli Dust Experiment (MEIDEX) will fly on a shared STS mission as a complex secondary payload. It’s primary mission objective is to monitor and provide by a Xybion Intensified Multispectral Camera (IMC-201) radiometric image data of atmospheric desert aerosol plumes. A secondary wide field of view (FOV) camera will be used to monitor the larger area surrounding the narrow FOV of the radiometric camera. Imaging data will be recorded on an on-board digital VCR for analyses. Using a portable laptop computer, the astronaut in the shuttle will control the camera operation, VCR record status, and experiment pointing during the course of the mission. MEIDEX - Crew Tutorial - Instrumentation

  4. Payload Instruments • Payload instruments • Xybion Intensified Multispectral Camera (IMC) serves as the main radiometric scientific equipment • SEKAI RSC-310 Wide Field of View (WFOV) camera serves at a view finder color camera • SEKAI ADVCR-101 digital VCR (3 units) • All payload instrumentation is located in HH canister (with 5” extension ring) • The Xybion IMC-201 and the SEKAI RSC-310 are on the movable Truss. • The 3 SEKAI ADVCR-101 are located under the Avionics Mounting Plate (AMP) which is ~6” above the Lower End Plate (LEP) of the canister. • On the AMP are located the following avionics are : • The Electrical Power Supply (EPS) with the Sekai CCD P/S. • Control and Data Handling unit (C&DH). • The Junction Box. MEIDEX - Crew Tutorial - Instrumentation

  5. Xybion IMC - General View MEIDEX - Crew Tutorial - Instrumentation

  6. Xybion IMC - Components MEIDEX - Crew Tutorial - Instrumentation

  7. XYBION 28V:12V POWER SUPPLY P4 BAFFLE POWER - I/O INTERFACE P3 P3 N/C LENS INTERFACE P2 RS-170 VIDEO OUTPUT LENS XYBION IMC-201 Xybion IMC - Basic Interfaces MEIDEX - Crew Tutorial - Instrumentation

  8. Critical Angle = 19.7 deg. FOV = 17.86 deg. Attenuated Beam 2.800  0.900 Front Lens Surface Xybion IMC-210 - Baffle Design MEIDEX - Crew Tutorial - Instrumentation

  9. Lens Support Bracket and Optical Bench MEIDEX - Crew Tutorial - Instrumentation

  10. Optical Bench in The Truss Mechanism- Drive Train Side MEIDEX - Crew Tutorial - Instrumentation

  11. Optical Bench in The Truss Mechanism- Brake Side MEIDEX - Crew Tutorial - Instrumentation

  12. Truss Mechanism - Top View MEIDEX - Crew Tutorial - Instrumentation

  13. Optical Bench and Truss Mechanism in the Canister Assembly MEIDEX - Crew Tutorial - Instrumentation

  14. The HH Canister on the Bridge MEIDEX MEIDEX - Crew Tutorial - Instrumentation

  15. The HH Canister on the Bridge MEIDEX MEIDEX - Crew Tutorial - Instrumentation

  16. Xybion IMC-201 - Optics The Hamamatsu A4869 lens has a focal length of is 50.4mm (F/3.5). The lens is composed of 5 elements (Fluorite and Fused Silica) in 5 groups. Total transmittance of the lens is >70%. The total FOV of the lens is 13.93o (H) x 10.66o (V). MEIDEX - Crew Tutorial - Instrumentation

  17. Xybion IMC-201 - Principle of Operation MEIDEX - Crew Tutorial - Instrumentation

  18. Xybion IMC-201 - Principle of Operation • Photons are passing through the filter and hitting the photocathode (PC) • The PC is converting the photons to photo-electrons. • The quantum efficiency of the PC varies from20% in the UV 200nm) to 2% in the NIR (850nm) - see next page. • The electrons are accelerated from the PC by a gated voltage difference - VPC towards the negative plate of the Multi-Channel Plate (MCP) that is at voltage of about -800V. • The gating of this voltage difference turns the PC negative in relation to the MCP thus allowing the electrons to reach the MCP during the gate interval • The gating pulse is rectangular with varying width that varies from 50nsec to 4msec. • The gating pulse is synchronized with the position of the filter wheel in such way that it coincides with the exact overlapping of the filter diameter (25mm) with that of the PC. MEIDEX - Crew Tutorial - Instrumentation

  19. Xybion IMC-201 - Quantum Efficiency MEIDEX - Crew Tutorial - Instrumentation

  20. Xybion IMC-201 - Principle of Operation • The MCP amplifies the number of the electrons as a function of the voltage difference between its two sides - see next slide • The relation between the voltage difference and the amplification of the number of electrons is shown in the next slide as a function of the voltage - V applied to the MCP and the parameter a that is the ratio between the MCP channel length to the channel diameter. • The value of a is in common MCP equal to ~40. • The gain of the MCP is controlled by setting the gain of the camera to certain percentage of the maximal gain that depends on the maximal allowed voltage. • The maximal voltage of the MCP in Xybion camera is ~890V • In MEIDEX main mission the gain of the Xybion camera will be adjusted to be G=65%. This means that the MCP voltage will be ~580V. According to the gain curves of the MCP with a=40 the amplification of the Xybion will be 200. • During the calibration process we discovered that for an increase of 5% in the value of G (from 65% to 75%) the amplification is increase by a factor of 2. • This fact is confirmed by the amplification curve. MEIDEX - Crew Tutorial - Instrumentation

  21. The MCP - Schematics and Operating Principle MEIDEX - Crew Tutorial - Instrumentation

  22. Amp=1000 700/890=0.78 Amp=500 650/890=0.73 The MCP - Gain Factor AMPLIFICATION MEIDEX - Crew Tutorial - Instrumentation

  23. Xybion IMC-201 - Principle of Operation • Once the electrons leave the MCP they are accelerated by 6KV to the photoanode. • The photoanode is a P-20 phosphor anode that has a peak response (radiation) at 550nm. • The photons emitted from the photoanode are detected by a CCD. At this wavelength the CCD is less sensitive to temperature changes. • Between the CCD and the photoanode there is a fiber-optics “minifier” that reduces the diameter of the image that comes from the photoanode (Dia.=1”) to the size (diagonal) of the CCD (2/3”). MEIDEX - Crew Tutorial - Instrumentation

  24. Xybion IMC-201 - Principle of Operation MEIDEX - Crew Tutorial - Instrumentation

  25. Xybion IMC-201 - Technical Specifications CCD Sensor: (786H x 493V) RS-170, NTSC (30 frames/sec) Dynamically determined exposure time: 50 ns to 4.0 ms (for rotating filter) in 50 ns steps* 10 decades of light level input, Auto-gated Spectral Response: 200-810nm (U Gen II UV photocathode) Sensitivity: not less than 1x10-6 fc (Lumens/ft2) for photopic source (no filter)** 18mm Gen II MCP Intensifier with 30 lp/mm Intensifier gain: 0-15,000 luminance gain (0 to 100% of the maximal gain) in 255 steps P-20 Phosphor Anode (550nm peak response) Image annotation: 1) Date 2) Time 3) Exposure time 4) Gain 5) Temperature of the CCD 6) Video frame # (N/A) 7) External event counter (N/A) (*) For stationary filer wheel the maximal exposure time is 33.3 msec. (**) Overcast night sky have Illuminance of 1x10-5 to 1x10-4 fc (Lumens/ft2) MEIDEX - Crew Tutorial - Instrumentation

  26. Xybion IMC-201 - The Command Tree MEIDEX - Crew Tutorial - Instrumentation

  27. Xybion IMC-201 - Command Tree • The Xybion camera is controlled via a back-panel key-pad (N/A in MEIDEX) or via RS-232. • The main commands that are delivered to the camera are shown in the following command tree. • All commands that are shown in frames are delivered to the camera via the Xybion Command Display in the PGSC4310 Software (see following explanations). boxes MEIDEX - Crew Tutorial - Instrumentation

  28. Xybion IMC-201 - Command Tree Run Spins Filter Wheel Filter Number: F Locks Filter Wheel in Single Position Lock Sets Light Gain of Camera’s MCP Camera Gain:G(%) Gain Exposure time of each filter is specified absolutely by the operator Exposure Manual Old setting: O Filter 1: Exposure time of each filter is dynamically computed and updated according to the video mode Automatic Filter 2: New setting: N Filter 3: Filter 4: Exposure time of each filter is dynamically computed and updated according to the video mode Filter 5: Video Filter 6: Exposure time of each filter is computed according to the AVERAGE videosignal of each frame Average video Annotation Configuration Exposure time of each filter is computed according to the PEAK video signal of each frame Report F= 1-6 G(%)=0 - 100 O/N = 0.00005 - 33.333 msec Peak video MEIDEX - Crew Tutorial - Instrumentation

  29. Xybion IMC-201 - Full Image layout 1 6 5 Filter # Exposure time (msec) Gain (%) CCD Temp. (Co) Date (mm/dd/yy) Time (hh:mm:ss) Coded data 3 2 4 MEIDEX - Crew Tutorial - Instrumentation

  30. Xybion IMC-201 - Command Tree Annotation N = 0 - 23 M = 0 - 45 K = 0(*) - 15 filter Num. Time Date Gain On oFf On oFf On oFf On oFf On oFf On oFf Row: N Column: M Row: N Column: M Row: N Column: M Row: N Column: M Row: N Column: M Row: N Column: M Exposure temPerature User defined Row: N Column: M Text:: Hello MEIDEX Width: K Coded data width MEIDEX - Crew Tutorial - Instrumentation

  31. Xybion IMC-201 - Command Tree Configuration average Video level Video level: V See Auto Exposure Setting Time Hours: hh Minutes: mm Seconds: ss V = 0 - 255 hh = 0 - 24 mm = 0 - 60 ss = 0 - 60 nn = 1 - 12 dd = 1 - 31 yy = 00 - 99 Date Month: nn Day: dd Year: yy Peak video level Video level: V Current setting reporT These commands outputs the current IMC settings(exposure-times, exposure-modes, gain, temperature, etc.) via the serial port in printed format. Encoded data MEIDEX - Crew Tutorial - Instrumentation

  32. Xybion IMC-201 - Operating Procedures MEIDEX - Crew Tutorial - Instrumentation

  33. Xybion IMC-201 - Operating Procedures • The Xybion camera is controlled via a back-panel key-pad (N/A in MEIDEX) or via RS-232. • The main commands that are delivered to the camera were shown in the following command tree. • These commands will be delivered to the Xybion camera through the PGSC4130 software by the use of: • The Relay Commanding Display • The Xybion Command Display • The Command Generator Display via the line XYBIONCMD MEIDEX - Crew Tutorial - Instrumentation

  34. Xybion IMC-201 - Switching the camera “ON” • The Xybion camera is switched On via the PGSC4130 software by the use of the Relay Commanding Display: • Pointing on the command “Xybion-On”. • Pressing the mouse left button. • A message “RELAY5 ON” will appear. • Pressing “Xmit” button. • The white dot will turn green MEIDEX - Crew Tutorial - Instrumentation

  35. Xmit with no selection send <Escape> Character Xybion IMC-201 - Operating The Camera • To select a command to the Xybion camera, click on the command name. • Enter the parameter value (if the command has a parameter). • Click the “Xmit” button to send the command. MEIDEX - Crew Tutorial - Instrumentation

  36. Xybion IMC-201 - More Operating Procedures • Commands and their parameter(s) value(s) are entered manually in the command buffer display. • For example the Configuration of the Date in the Xybion camera by entering the Month, Day, Year settings. • Clicking the “Xmit” button sends the command. MEIDEX - Crew Tutorial - Instrumentation

  37. Xybion IMC-201 - Switching the camera “OFF” • The Xybion camera is switched Off via the PGSC4130 software by the use of the Relay Commanding Display: • Pointing on the command “Xybion-On”. • Pressing the mouse left button. • A message “RELAYK5 OFF” will appear. • Pressing “Xmit” button. • The white dot will turn white MEIDEX - Crew Tutorial - Instrumentation

  38. Sekai RSC-310 CCD MEIDEX - Crew Tutorial - Instrumentation

  39. Lens RSC-310 CCD Head ~48" RSC-310 Camera Electronics P1 P2 Sekai RSC-310 CCD - Components and Interfaces MEIDEX - Crew Tutorial - Instrumentation

  40. Sekai RSC-310 CCD - Operating Procedures MEIDEX - Crew Tutorial - Instrumentation

  41. Sekai RSC-310 CCD - Operating Procedures • The Sekai camera is controlled via commands that are delivered to the camera through the PGSC4130 software by the use of: • The Relay Command Display • The Sekai camera operates without any additional command after it is switched on. MEIDEX - Crew Tutorial - Instrumentation

  42. Sekai RSC-310 - Operating Procedures • The Sekai camera isswitchedOn via the PGSC4130 software by the use of the Relay Commanding Display: • Pointing on the command “Sekai-On”. • Pressing the mouse left button. • A message “RELAYK4 ON” will appear. • Pressing “Xmit” button. • The white dot will turn green MEIDEX - Crew Tutorial - Instrumentation

  43. Sekai RSC-310 - Operating Procedures • The Sekai camera isswitched Off via the PGSC4130 software by the use of the Relay Commanding Display: • Pointing on the command “Sekai-Off”. • Pressing the mouse left button. • A message “RELAYK4 OFF” will appear. • Pressing “Xmit” button. • The white dot will turn white MEIDEX - Crew Tutorial - Instrumentation

  44. Sekai ADVCR-101 MEIDEX - Crew Tutorial - Instrumentation

  45. Sekai ADVCR 101 - Components MEIDEX - Crew Tutorial - Instrumentation

  46. ADVCR #1 AUDIO (PLAYBACK) ADVCR #1 VIDEO (PLAYBACK) ADVCR #1 EGSE I/F ADVCR #1 RT1 P3 SIGNAL ADVCR #1 VIDEO IN (XYBION) P2 ADVCR #1 C&DH I/F ADVCR #1 POWER (+28V) P1 POWER t ADVCR #1 TEMP Px Jx Sekai ADVCR 101- Basic Interfaces MEIDEX - Crew Tutorial - Instrumentation

  47. Sekai ADVCR-101 - Operating Procedures MEIDEX - Crew Tutorial - Instrumentation

  48. Sekai ADVCR-101 - Operating Procedures • The Sekai ADVCR-101 is controlled via commands that are delivered to the camera through the PGSC4130 software by the use of: • The Relay Command Display MEIDEX - Crew Tutorial - Instrumentation

  49. Sekai ADVCR-100 - Operation Procedures • The Sekai ADVCR-100 (#1) is switched On via the PGSC4130 software by the use of the Relay Commanding Display: • Pointing on the command “Vcr1-On”. • Pressing the mouse left button. • A message “RELAYK1 ON” will appear. • Pressing “Xmit” button. • The white dot will turn green • The ADVCR is now in STBY mode. MEIDEX - Crew Tutorial - Instrumentation

  50. Sekai ADVCR-100 - Operation Procedures • The Sekai ADVCR-100 (#1) is switched to Record mode via the PGSC4130 software by the use of the Relay Commanding Display: • Pointing on the command “Record1-On”. • Pressing the mouse left button. • A message “RELAYK2 ON” will appear. • Pressing “Xmit” button. • The white dot will turn green MEIDEX - Crew Tutorial - Instrumentation

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