Senior Member
CT67880 and single-ended drive: hmmm.
Wotcher all,
so, fate has smiled upon me once more and it now looks like I will be getting a nice, shiny set of CT6800HP galvos with CT67880-LS drivers. However, my DACs only drive single-ended. Do these amps have a jumper or link I can set? Will they work just fine regardless? Could this be the end for our daring duo?
Answers on a postcard (or a stamped, addressed forum posting) please ;-)
Thanks :-)
Creaky Old Award Winning Bastard Technologist
Originally Posted by heroic
Cambridge's sales engineers are competent and don't bite. I'm trying to remember the names of the two nice ladies who were the sales engineers a while back. They would show up at ILDA conferences and party with us.
I assure you a simple phone call to the Boston area and you'll have your data, provided the merger with GSI has not messed them up too badly.
But for now you can feed them single ended by grounding one side and driving the other, but you will only get 1/2 the deflection. Some time this afternoon I will scan in the ilda prefered diff driver circuit for your amusement.
The factory drawing on ye old web site actually has the tuning pots labeled.
http://www.cambridgetechnology.com/P...ver-677XX.html
(781) 541-1601 Eastern US Home office
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Steve
Senior Member
I actually spoke to David at CT yesterday evening and he was very helpful and friendly, so hopefully I can get this ironed out relatively easily. I'd rather avoid interposing yet another board and set of connectors in the signal path- between the DAC and the scan amp I have a switcher, a scan safety board and a scanner protection board already. Why must all projectors devolve into a wiring nightmare? It's madness I tell you!
I was mostly wondering if anyone might know off the top of their proverbial head. There have to be a bunch of folks round these parts who have these scanners.
Creaky Old Award Winning Bastard Technologist
The camb amps pretty much protect themselves, so you can prolly ditch the scanner protect board.
Steve
Senior Member
I'd sooner keep it, since it also clamps the ILDA input socket to protect everything from ESD.
I just received the (excellent!) documentation from CT- yes, there is a jumper to select single-ended operation.
Last edited by heroic; 03-05-2009 at 06:56.
Creaky Old Award Winning Bastard Technologist
they sent you the tuning procedures book right?
if not A little something skywise hosts for me:
http://www.skywise711.com/lasers/scanner/scanner.html
needs updated, but its a start.
Steve
Creaky Old Award Winning Bastard Technologist
And we are looking forward to seeing pics of first light.
Steve
Senior Member
You'll have to wait for it to turn up I'm afraid :-)
-J.
Senior Member
PICTURES
Senior Member
Okay, okay, it arrived.
I can't install the new scanners til Saturday because I can't risk a refit of this magnitude until I have a couple weeks spare to put it right if it fails dismally. However I will say this:
- Holy crap the docs with the CT gear are *phenomenal*.
- w00t build quality.
- The mirrors on the new scanners are noticably better than the ones on either the Scanpros or the DT stuff.
I look forward to seeing the awesomeness when my beautiful assistant and I actually install them :-)
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