1. BonnellSPF AEB CDR PEER REVIEW – RESPONSES Solar Probe Plus FIELDS Antenna Electronics Board AEB I-CDR Peer Review Responses (rev A, 13 Jan 2015) J. Bonnell UC Berkeley, SSL jbonnell@ssl.berkeley.edu 1

2. BonnellSPF AEB CDR PEER REVIEW – RESPONSES I-CDR Peer Review Items 2

3. BonnellSPF AEB CDR PEER REVIEW – RESPONSES I-CDR Peer Review Item 001 3

4. BonnellSPF AEB CDR PEER REVIEW – RESPONSES I-CDR Peer Review Item 002 4

5. BonnellSPF AEB CDR PEER REVIEW – RESPONSES I-CDR Peer Review Item 003 5

6. BonnellSPF AEB CDR PEER REVIEW – RESPONSES I-CDR Peer Review Item 004 6

7. BonnellSPF AEB CDR PEER REVIEW – RESPONSES I-CDR Peer Review Item 005 7

8. BonnellSPF AEB CDR PEER REVIEW – RESPONSES I-PDR Peer and I-PDR Review Items (for reference) 8

9. BonnellSPF AEB CDR PEER REVIEW – RESPONSES I-PDR Peer and I-PDR Review Items (1 of 2) DescriptionOriginatorTypeResponse Put a relay on AEB to turn on and off the heater. See if RC filtering is necessary and look into +/- supply instead of single supply to see if that will reduce possible EMI. K. Hatch (SSL)AdvisoryIndependent relays for V5 PWR and HTR control added; both feed off of floating +/- 15V V5 supply; no additional EMI filters added at this time. Add “on box bias on V5” on chart, level 4 requirement update J. Hoberman (SSL)AdvisoryTo be updated by I-PDR. Remove LF coax requirement from AEB and Redo coax diagram J. Hoberman (SSL)AdvisoryDone; also requirement for all on-PCB coax runs removed. 9

10. BonnellSPF AEB CDR PEER REVIEW – RESPONSES I-PDR Peer and I-PDR Review Items (2 of 2) DescriptionOriginatorTypeResponse What happens to the output when the sync is removed from AEP? Is it a smooth transition? Test and document. ALSO: I-PDR A05; CLOSED. P. Berg (SSL)AdvisoryQuestion raised in I-PDR as well; removal of SYNC disabled MAX256 in Floater supplies; after discusion of risks, MODE drive set to LOW to force external-clock- only operation in EM. Test DAC turn on characteristics when connected to preamp box. What happens when the DAC comes on at 0 volts instead of mid-scale? J. Hoberman (SSL)AdvisoryDone at bench test level – no obvious issues. Will check at INT level as well. Concern about incomplete analysis of the output stage of the floater circuit (Q19, Q20) K. Hatch (SSL)AdvisoryNo further analysis done at this time for legacy design; EM implementation works as expected. 10