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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
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Thread Tools |
15th May 2017, 3:48 pm | #1 |
Pentode
Join Date: Apr 2017
Location: South Coast, Western Australia.
Posts: 129
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Graticule illumination?
Recently I replaced a blown 6v3 filament bulb 'on' indicator in on of my scopes with an LED. The scale illumination was powered from the same supply. I mused that in nearly 45 years of owning a scope (starting with a Hartley 13A...), and using one at work for much of that time, I have never ever turned up the graticule illumination, but all CRT scopes are fitted with it.
When would it be used? Regards, BC |
15th May 2017, 4:01 pm | #2 |
Dekatron
Join Date: Apr 2012
Location: Worksop, Nottinghamshire, UK.
Posts: 5,554
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Re: Graticule illumination?
Is it not to show the graticule when taking film camera photos?
Obviously this is unheard of these days. |
15th May 2017, 4:18 pm | #3 |
Nonode
Join Date: Oct 2008
Location: Warsaw, Poland and Cambridge, UK
Posts: 2,679
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Re: Graticule illumination?
It's useful for photos, yes, and also for normal use depending on the lighting conditions and what sort of colour filter, if any, the scope has on the screen. When using a scope in low light I find the graticule illumination especially helpful. Just looking around at the 3 analogue scopes within sight of my desk, I realise I habitually keep the graticule illumination on when I'm using them just to remind myself they're switched on! There isn't always a visible trace, especially if I've got a scope set up to trigger on some particular event, or I'm using a differential input with a big offset.
Chris Chris
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What's going on in the workshop? http://martin-jones.com/ |
15th May 2017, 4:55 pm | #4 |
Dekatron
Join Date: Jun 2016
Location: London, UK.
Posts: 3,687
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Re: Graticule illumination?
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