fb3 troubles please help

[dave]

i did measure with multi meter i thought blanking output was analogue and a meter was ok
at the end of the day alphalite dac worked my setup well norms dac did ok
fb3 works just not very bright ouput red is putting out 200mw green 60mw they should be 420mw and 100mw i thought spending $600 was a step up not down

Going from rubbish parallel port dacs to Pangolin is definitely a step up!

[badger1666]

Hi Badger,

I think you got this problem resolved, right?

By the way, was it you who wrote to me the other day?

Bill

yep working better not as bright as it used to be on my other dac
it was all down to tec cooling one laser could not cope with fb3 blanking
frequency played some complex images paused and dialed in the tec temp controller till green stopped flashing bright

[Pangolin]

Some of these things require "in person" view of the problem. That's why I really like these PL gatherings. It gives people a chance to share equipment stories, see and resolve the problems in person. And everyone is eager to help.

I am glad you were able to get better performance from your laser. Probably you will notice that it changes from image to image. Just like scanner amps and tuning is one problem for PL members (hopefully a fading problem as techniques and equipment improves), laser diode drivers is another problem. Seems like the next hurdle to overcome.

As I alluded in a previous post, we have a third-year (or is it fourth-year?) engineering student who is interning with us at Pangolin. His field of study in school is lasers, and he is working on evaluating the meriad of laser diode drivers out there. I am sure this work will no doubt result in some recommendations to manufacturers, and improvements in the images.

Bill