Originally Posted by
Theoneinformant
Documentation is a little spotty for it though. In the usbstreamer menu it says 8channel 24 bit. But software/Windows says it's outputting 16 bit. I am hoping that is just the max bitrate that is listed in the menu, and not the reason I am having problems. Blackface being 16 bit and all.
Do you have access to an audio signal generator with sine and square wave outputs? Not a sound card or adat if possible, but an actual stand alone signal generator.
You need a dc coupled, variable amplitude, symmetrical, Thirty Hertz square wave to start on scanner diagnostics the professional way.
An Oscilloscope would not hurt either, but once you have a square wave of good quality I can walk you thru some quick checks with the laser.
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My method is the old way, also the factory way, and it works when all else fails. Beware of imitations, because I have the Cambridge Technology book on how to do this from scratch if your a laser show person. They used to give a presentation on hard core scanner amp factory tuning methods at ILDA Conferences. The guy giving the course was Mike Thanos, who co-designed many of these scanner amps. He showed us old guys a few useful things when we were young. You then need a quad square, a Laser Media test pattern, and the ILDA pattern next.
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Once you touched the potentiometers, there is a good chance you need to tune from start.
Steve
Last edited by mixedgas; 03-27-2018 at 07:44.
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