To me it looks like a signal amplifier with adjustable gain. That is the function of those relays, labeled {U5, U6, U7, U8, U9, U10, U11}. Turning on different combinations of those relays changes the resistance in the feedback path from the output of op-amp U4, to the inverting input of op-amp U2A.
Discussions
8 weeks ago
To me it looks like a signal amplifier with adjustable gain. That is the function of those relays, labeled {U5, U6, U7, U8, U9, U10, U11}. Turning on different combinations of those relays changes the resistance in the feedback path from the output of op-amp U4, to the inverting input of op-amp U2A.
8 weeks ago
I assume it is also the goal for said project to figure it out? ;)