The interface seems unusual..
It doesn't have 1 input that takes +-10v
But 1 input for positive voltage and 1 input
for negavite voltage command.
Also outputs +-3v analog feedback voltage
must read this or only run open loop?
Can mesa 7i77 with linuxcnc meet the strict
time constraints for galvo operation because
i know that timinings in galvo scanners are 1 or 2 orders magnitude smaller than servomotors of cnc machines
That's a standard differential input, it can be wired to a single ended output:
IN- --> GND IN+ -->ANA
I doubt that a servo thread update rate would be good enough for this however
unless you are scanning quite slowly, The XY2-100 interface has the advantage
that it interpolates between LinuxCNCs waypoints, but you lose this advantage
with a simple analog interface.
Can i drive the command+ / command- differential input with 2 opamps
1 inverting and 1 non-inverting with gain 0.5 without using gnd right?
Which opamp ic will be suitable ? lm324 or something better with lower rail voltages ?
Also is there a ready made linuxcnc example configuration for analog galvo control?
