Spin echo generator board (in progress)
Jump to navigation
Jump to search
PCB layout here:
https://rflab.martinos.org/images/2/2f/Spin_echo_board.zip
Large blue potentiometer sets TE. Smaller potentiometers are used to set the duration of the gating pulse (sent to RFPA), duration of the 90 deg. excitation hard pulse, duration of the 180 deg. refocusing hard pulse, and other delays.
The synthesizer input should typically be 10 dBm or higher to drive the mixers properly.