1. Analog System Review and Status Wes Grammer NRAO September 24-26, 2012EOVSA Prototype Review1

2. Outline Top-level subsystem description Module-level design and construction status – 2-meter Front End assembly – Front End auxiliary electronics cabinet – Downconverter module – LO Distribution modules – Timing Generation and Distribution module – Correlator Clock Generation module Rack-level design & cabling Budget and current schedule September 24-26, 2012EOVSA Prototype Review2

3. Analog Subsystem Diagram September 24-26, 2012EOVSA Prototype Review3

4. 2-Meter Front End Assembly September 24-26, 2012EOVSA Prototype Review4

5. 2-Meter Front End Block Diagram September 24-26, 2012EOVSA Prototype Review5

6. September 24-26, 2012EOVSA Prototype Review6

7. Half-side Interior View, 2-meter Front End Assembly September 24-26, 2012EOVSA Prototype Review7

8. 20 GHz Laser Transmitter September 24-26, 2012EOVSA Prototype Review8

9. Optical Mux / Demux September 24-26, 2012EOVSA Prototype Review9

10. Front End Module Design and Construction Current status Most components on hand, except low-loss coax cables, BPF, bulkhead fiber adapter. Module mechanical design 50% done; will contract Segars Engineering to complete. Apex mounting plate design is TBD (Segars ) Module wiring diagram is TBD Ethernet cable is under construction (Kjell N.) Front End interface board circuit design 90% done; PCB layout, fab and assembly TBD. Parts ordering TBD. Software interface document, embedded firmware and control GUI are TBD. September 24-26, 2012EOVSA Prototype Review10

11. Front End Auxiliary Cabinet September 24-26, 2012EOVSA Prototype Review11

12. Auxiliary Cabinet Wiring Diagram September 24-26, 2012EOVSA Prototype Review12

13. September 24-26, 2012EOVSA Prototype Review13

14. Auxiliary Cabinet Design and Construction Current status Nearly all components on hand; two Lambda supplies on backorder, opt. RX units in transit. Wiring of first cabinet is well underway All 4 power and signal cables completely specified, parts on hand at OVRO (Kjell to build) 1PPS fiber patch cords on order; will arrive ~9/28 Outdoor analog fiber drop cables on order; will arrive ~11/1. Ethernet cable under construction (Kjell N.) Multifiber cable termination inside cabinet TBD September 24-26, 2012EOVSA Prototype Review14

15. Downconverter Module September 24-26, 2012EOVSA Prototype Review15

16. Downconverter Block Diagram (1 of 2) September 24-26, 2012EOVSA Prototype Review16

17. Downconverter Block Diagram (2 of 2) September 24-26, 2012EOVSA Prototype Review17

18. Downconverter Module Interior Layout September 24-26, 2012EOVSA Prototype Review18

19. Downconverter Front/Rear Panels September 24-26, 2012EOVSA Prototype Review19

20. Downconverter Module Interface PCB September 24-26, 2012EOVSA Prototype Review20

21. Downconverter Module Design and Construction - Current status All components in, except one 2.92mm cable Module mechanical design complete, metal work on order. Assembly drawings TBD. Need to generate module wiring diagram; mechanical assembly of 1 st module will begin ~ Oct. 8. Downconverter interface board in assembly stage, firmware development and GUI TBD. Rack DC power cables under construction September 24-26, 2012EOVSA Prototype Review21

22. LO Distribution Module September 24-26, 2012EOVSA Prototype Review22

23. LO Distribution Subsystem: LO1 September 24-26, 2012EOVSA Prototype Review23

24. LO Distribution Subsystem: LO2, DC input September 24-26, 2012EOVSA Prototype Review24

25. LO1-A, LO1-B Synthesizer September 24-26, 2012EOVSA Prototype Review25

26. LO Distribution Module Interior Layout September 24-26, 2012EOVSA Prototype Review26

27. LO Distribution Module Rear Panel September 24-26, 2012EOVSA Prototype Review27

28. Quinstar Power Amplifiers for LO1 September 24-26, 2012EOVSA Prototype Review28

29. LO Distribution Module Interface PCB September 24-26, 2012EOVSA Prototype Review29

30. LO Subsystem Design and Construction Current status All components in, except 2.92mm cables. Distribution module mechanical design complete, metal work on order. Assembly drawings delivered. Need to generate detailed wiring diagram; mechanical assembly will begin ~ Oct. 1. LO interface module under assembly, firmware development and GUI in progress. Power supply module mechanical design and fab is TBD; DC power cable is ready. September 24-26, 2012EOVSA Prototype Review30

31. Timing Generation and Distribution Subsystem September 24-26, 2012EOVSA Prototype Review31

32. Timing & Reference Distribution Block Diagram September 24-26, 2012EOVSA Prototype Review32

33. Timing Generator Module Interior Layout September 24-26, 2012EOVSA Prototype Review33

34. Timing Generator Module Rear Panel September 24-26, 2012EOVSA Prototype Review34

35. 1 PPS Driver, 50 Hz Generator PCB September 24-26, 2012EOVSA Prototype Review35

36. 1PPS Laser Transmitter Unit September 24-26, 2012EOVSA Prototype Review36

37. EDFA / 16-way splitter (PRD-16) September 24-26, 2012EOVSA Prototype Review37

38. PRD-16 Rear Panel September 24-26, 2012EOVSA Prototype Review38

39. 1PPS Optical Receiver September 24-26, 2012EOVSA Prototype Review39

40. Labview GUI for PRD-16 September 24-26, 2012EOVSA Prototype Review40

41. Timing Generation and Distribution Subsystem Design and Construction - Current status All components are in. TGD module mechanical design complete, metal work on order (fast turnaround) Assembly drawing delivered. Need to generate module wiring diagram; mechanical assembly will begin ~ Oct. 1. Timing generator boards built, tested. Will need a small additional PCB for output buffering of the optical RX, to correct polarity, pulse width and drive level for cRIO. September 24-26, 2012EOVSA Prototype Review41

42. Correlator Clock Generation (CCG) Module September 24-26, 2012EOVSA Prototype Review42

43. CCG Module Block Diagram September 24-26, 2012EOVSA Prototype Review43

44. CCG Module Interior layout September 24-26, 2012EOVSA Prototype Review44

45. CCG Module Rear Panel September 24-26, 2012EOVSA Prototype Review45

46. CCG Module Design and Construction Current status All components in, except 1200 MHz PLO; expect it to ship 9/28/12 from vendor. CCG module mechanical design complete, metal work on order (fast turnaround) Assembly drawing delivered. Need to generate CCG module wiring diagram; mechanical assembly will begin ~ Oct. 1. September 24-26, 2012EOVSA Prototype Review46

47. Rack-Level Design and Cabling September 24-26, 2012EOVSA Prototype Review47

48. Layout of Equipment Racks, Front View September 24-26, 2012EOVSA Prototype Review48

49. Partial Drawing of Analog Racks, Rear View September 24-26, 2012EOVSA Prototype Review49

50. LO Inter-rack Cable Routing September 24-26, 2012EOVSA Prototype Review50

51. Downconverter Subrack Frame September 24-26, 2012EOVSA Prototype Review51

52. Analog Rack Layout and Construction Current status Equipment racks on order; delivery expected at end of October. 6U subrack kits received; awaiting guide rail hardware PDUs and UPS ordered and received by Kjell N. Fiber cables to Patch Panel on order, quick delivery. LO2 cables on hand; LO1 cables expected late Oct. DC supplies and filters for Downconverter rack on hand, in sufficient quantity for prototype build. Mechanical layout and wiring of Downconverter power supply panel is TBD. Will use DIN rails and terminal blocks like Auxiliary cabinet, but with separate 19 wide panel for power cable mating. Downconverter IF output cables to Correlator rack not yet specified or ordered. Short lead-time item. September 24-26, 2012EOVSA Prototype Review52

53. Schedule, Costing and Personnel September 24-26, 2012EOVSA Prototype Review53

54. Revised Module Delivery Timeline Module construction ~1-3 months behind original schedule. Will have staged deliveries: – Expect to assemble, test and ship TGD and CCG modules mid-October, with PRD-16. – Begin assembly of LO Distribution module mid-October, test and ship by mid-November, assuming GUI and firmware are ready. – Assemble Downconverters by early November, test and ship by end of November, assuming software GUI available and firmware is done. – Fab of mechanical pieces in Front End assembly by mid- November, assembly complete in early Dec. Test and ship all units by end of year. September 24-26, 2012EOVSA Prototype Review54

55. Schedule Risks and Assumptions Remaining deliveries from vendors are on time. Moderate risk. Assume full-time technician help available through end of November. Moderately high risk. Assume firmware and GUI available when needed for module testing. Moderately high risk. No 11 th -hour design changes. – Low risk for TGD, LO Dist. and CCG modules – Moderate risk for Downconverter, Front End modules Other unforeseen catastrophes (??). Low risk. September 24-26, 2012EOVSA Prototype Review55

56. Costing and Personnel Prototype and production costing tracked with top-level Excel bill of materials (view) Additional personnel in VA working on EOVSA: – Chuck Neff, Mechanical draftsman/designer, Segars Engineering. 3D mechanical design of modules. – Steve Nuttall, Senior Technician, NRAO. Board and cable assembly, wiring, mechanical assembly. – Bob Treacy, Tech Spec. I, NRAO. PCB layout. – Jason Castro, Engineer II, NRAO. Embedded firmware and Labview GUIs. September 24-26, 2012EOVSA Prototype Review56

57. September 24-26, 2012EOVSA Prototype Review57