h1. Toroid Electronics Meeting Minutes h1. June 26, 2006 h1. Analog Electronics Design ^ h2. Contents {maketoc}^ h1. Attendees: | John Dusatko | Mike Browne | Michael Cecere | | Steve Smith | Hamid Shoaee | Sheng Peng | h1. Agenda: # Analog Electronics h1. Presentation Materials: [PPT for meeting, June 19, M. Cecere|http://lcls-dev:4298/tiki-download_wiki_attachment.php?attId=53] [Project Timeline, M. Cecere|http://lcls-dev:4298/tiki-download_wiki_attachment.php?attId=54] h1. Minutes: * Toroid Manufacture Status ** Tim says ceramic, brazed toroids should be here next week for testing ** Toroid coil polarity not resolved yet, will pursue with ISA, with Steve's help * Will our system be fast enough for IM01, 120Hz Laser Feedback? ** won't be implemented for a while, first operation at 1 - 30 Hz * Since using only 4 channels of each 16 channel IP330, may as well drive more signals ** i.e. PS status (so IOC knows the toroid box is still alive) ** add another DAC/buffers * Signal IOC when all 4 channels are ready for IOC ADC to convert ** this should optimize time performance of system ** should be trigger line on cable to IP330. ** drive directly from PIC (with buffer? or just use DAC channel since already buffered) ** Change IOC connector to SCSI to match other end. (straight-through, John?) * Analog Circuit Design ** Bring Signal Straight to Integrating Op-Amp, no buffer ** Put +/-1 stage immediately after int. op-amp (introduces off-set error, estimate this) ** add buffer circuitry to schematics * Calibration Circuit Design seems OK * Use Vern Smith for intra-rack cabling? * Will Chuck Yee be able to do this job timely? seek other help? h1. Action Items: # *M. Cecere:* Adjust circuit as described above # *M. Cecere:* Need Test Plan # *M. Cecere:* Add Mechnical Box design to timeline |