problem: galvos vibrating!

[yusuf]

is the input ground good from the outlet to the PS. You need to be sure the wall ground is good not just that it is connected. Perhaps try another outlet. Then again maybe i am not sure the problem you are talking about have you a video of it?

Sorry I didn't understand what do you mean by "good". Sorry for the video I don't have one.

On the other hand I think that I have to change the cable of my laptop because now I'm using and adapter to connect it to the Swiss outlet I'll try a cable directly connected to the outlet.

[aricha]

To make sure which part is faulty
Swap the cables on the scanners
If the same scanner is having the problem than it is the scanner
If the other scanner is having the problem than it is either the cable or the driver or the signal
So now you swap the cables on the driver side and see what happens
Now change the signal cable that comes to the driver and see what happens
You do the canges when the projector is off

Remember always to turn off and on your projector when your laser software is on a blank frame
And never turn on your projector when no signal is connected

[yusuf]

To make sure which part is faulty
Swap the cables on the scanners
If the same scanner is having the problem than it is the scanner
If the other scanner is having the problem than it is either the cable or the driver or the signal
So now you swap the cables on the driver side and see what happens
Now change the signal cable that comes to the driver and see what happens
You do the canges when the projector is off

Remember always to turn off and on your projector when your laser software is on a blank frame
And never turn on your projector when no signal is connected

I have just one scanner for the moment .
I compare the results between the to drivers and I have nothing in the output with both.

[yusuf]

I tried also an open loop test, I mean disconnecting the two pins of the position detector PDA and PDB and see just what my driver gives in its output without having a feedback from the galvo.
The input signal is referenced at 2v(the reference voltage of the sound card) and has a maximum value of 4v.
the result is a mirror waveform of the input signal with a voltage reference of 9V the maximum value depend on the size pot and can go until 19v.
the signal output is the same with the other driver but the voltage reference is 12v.

Are this results making any sense? do you think this voltage averages are normal ?