Difference between revisions of "Spin echo generator board (in progress)"
Jump to navigation
Jump to search
| Line 9: | Line 9: | ||
The synthesizer input should typically be 10 dBm or higher to drive the mixers properly. | The synthesizer input should typically be 10 dBm or higher to drive the mixers properly. | ||
| − | [[File:Spin_echo_board_bottom.JPG|400px|thumb|left| | + | [[File:Spin_echo_board_bottom.JPG|400px|thumb|left|Top of PCB with digital IC's.]] |
| − | [[File:Spin_echo_board_top.JPG|400px|thumb|left| | + | [[File:Spin_echo_board_top.JPG|400px|thumb|left|Bottom of PCB with RF components and potentiometers to set pulse duration and duty cycle.]] |
Revision as of 22:49, 25 March 2024
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.
