LukasW Log
Hello Open Source Hardware World! Starting to Log the progress around www.opensourceimaging.org
please post pix on FB or somewhere and/or embed in here-MJ
Tue Sep 20, 2016
Poster for World Health Summit finished.
Mon Sep 19, 2016
RFPA: Transistor in power amp module down, input power to driver stage accidently too high hence input power at power amp too high. Solution: New LDMOS transistor ordered and damping at driver input will be included (hardware) to adjust the range to 0-1V (SDR output range). The damping can be replaced easily later on if another spectrometer is used, but a protection on hardware side is safer than on software side only.
Fri Sep 16, 2016
OSI outreach: Monthly team meeting yesterday (Simone, Haopeng, Ruben, Brian, Lukas). Targeting ISMRM Engineering Study group presentation slot at the next meeting (-> Simone), projectupload ongoing goal to reach 20 projects by october, fuse efforts with MR-Hub (talk to Brian Hargraeves and create project upload page)? Open up meistertask board and connect to slack, create guidelines page (license + legal framework + medical device development)
COSI hardware: RFPA: un-/blanking timing solved, 600A transistor and 0.1ohm resistor solves the timing issue after blanking, now we are at around 100müs after transmit pulse until readout can be applied which is sufficient RF Coil: measurements done (Christian) at PTB with TEM cell and Frank Magnet: PMMA rings ordered, gradient simulations ongoing (-> Raphael) Measure: Finishing the cabling/connectors (-> Haopeng), modified 3D CAD chain holder needed (-> Lukas), motor coupler order did not arrive yet (26.08.)