Setting bias on driver

[polishedball]

How does one set bias on drivers that have suppression to avoid the glow.

I used to on a Flexmod, be able to watch and properly adjust the bias with the mod line shorted. Now with bias suppression you get no output if the mod lines are shorted no matter how high ya were to turn up bias.

I just can't see how to set his up without a .1v ps to simulate the lowest turn on voltage.

Thoughts? I am guessing I am missing the obvious, from having setup way to many the other way.

[dave]

The beam suppression will only be active if there is no mod input.

So set the drive amount pot to zero, apply modulation to activate the driver, then you can set the bias :-)

[polishedball]

Thanks I was way over thinking it.

The beam suppression will only be active if there is no mod input.

So set the drive amount pot to zero, apply modulation to activate the driver, then you can set the bias :-)