[sdiy] O'scope recommend - remove the graticule

[Richard Gorbutt]

Hi tom

Ive got an old valve scope with a removable graticule that I tried doing that with. unfortunately its so flakey I generally just use my hitachi with the etched on graticule and try not to notice the lines.. One trick ive used to occasional good effect is to use the lense and ccd from an old 35mm film to pal video scanner to shoot the image on the scope. It's a macro lense of some description I think, but depending on the settings of the scopes intensity/focus etc and the focus and aperture etc on the lens (its got big levers sticking out of the side to adjust things) you can get it to sort of focus 'through' the graticule lines and they disappear. I think this may be called Depth of Field but tbh im not very camera savvy. All I know is it looks Extremely Trippy.

Good hunting

rich

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Tom Bugs
Sent: Tuesday, August 23, 2011 10:01 AM
To: Synth-DIY DIY
Subject: [sdiy] O'scope recommend - remove the graticule


Hiya,

I'm looking for recommendations on oscilloscopes which have removable
graticules (the grid lines over the display).
I'm helping a friend put together a video synth system, beginning with
vector rescanning and the results would be best without lines over the
screen.
Many modern scopes have the lines actually etched into the display tube,
but I'm sure that quite a lot of older 'scopes may have removable
graticules - basically we don't want to go purchasing 'blind'.

There was a thread started about such things at the MuffWiggler site -
http://muffwiggler.com/forum/viewtopic.php?t=29973
- here the Tektronix T-922 was recommended but these seem to be US
models in general. And there's not much more for suggestions..

On a similar note - does anyone know a good 2nd hand 'scope shop in the UK? I know there are always lots on Ebay, but so many of them are being sold
by people who don't know how they work - it is hit & miss as to whether
you'll get something any good.

Thanks for any help,
Tom

--
BugBrand LTD
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VAT No. GB 988 2629 57
1 Ninetree Hill
BRISTOL BS1 3SB
United Kingdom
www.bugbrand.co.uk

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