Re: Shop Camera

> wanliker@... wrote:
>
> >
> > In a message dated 8/5/2006 12:35:18 A.M. Mountain Daylight Time,
> > john@... writes:
> >
> > But if you use an old PC, free from most places, you can also run it as a
> > shop computer.
> > Run various programs like Machinist's Mate, _http://www.wadecoprhttp:_
> > (http://www.wadecopro.com/)
> > Run a set or part of a DRO system.
> > Run TurboCNc driving one stepper motor [ or more ] to give a simple power
> > feed to a machine, [ no need for out and out CNC. ]
> > Use Turbo CNC again to power a stepper driven dividing head for indexing
> > without tears.
> >
> > A cheap shop PC has far more uses than a TV and takes up the same amount of
> > room.
> >
> >
> >
> > I agree with your comments.
> >
> > However, I still want the TV, one unit, versus a computer, and a monitor.
>
> Assuming your TV has a straight analogue input it will probably be NTSC
> on that side of the pond. The problem with getting good sharp close
> pictures is that composite video has the colour and black and white
> mixed up so that when it is pulled apart in the monitor you get strange
> patterning. NTSC can be a bit worse for this as PAL is designed to lock
> the pattern so you do not get colour crawl. Small single chip colour
> cameras can be bought for 40 to 50 GBP and probably the same in dollars
> in the USA. The do not produce bad pictures and for inspection work they
> may well be acceptable, but they are usually about 350TVL resolution -
> basically 350 dots across the screen.
>

NTSC - Never Twice the Same Colour <g>

John S.