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fly258 | 20:55 Fri 25th Feb 2005 | Technology
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How do TV engineers set up the picture on a new TV without a test card?

Iv'e just bought a new TV and I'm trying to set up the picture but find it difficult without a fixed  picture.

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Most new TVs will do this (almost) automatically. All you have to do is find the "menu" button on the remote, press that, then, on the on-screen meus, find something like "tuning", then go to "auto-set" up or "auto-detect" or whatever. Select that, and let the tv find the strongest signals. When it settles on a channel, use the remote to store it (see handbook). Set it going to find the next channel, then store again..etc etc..
They usually plug pattern generators into the TV to produce the test patterns.

I had to re-align the geometry on my TV so made an image of a crosshatch pattern in Photoshop and wrote it as a jpeg file to a CD and played that in the DVD player - it worked a treat.

You can also buy DVD calibration disks but I've only come across NTSC versions - Avia and Digital Video Essentials both available from Amazon.co.uk


A Test card and other test patterns only have any real value or purpose when connected to a vectorscope and waveform monitor.

It's no good just playing a testcard on your TV without the appropriate callibration equipment. aswell.

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