Precision Apparatus Dot & Bar Signal Generator Model E-420, Powers Up - $13 (Bend)

Precision Apparatus Dot & Bar Signal Generator Model E-420, Powers Up 1 thumbnail

make / manufacturer: Precision Apparatus

model name / number: E-420

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Precision Apparatus Co, Inc White Dot & Bar Signal Generator, Model E-420. It was made in Glendale, New York. A dot & bar generator produces a known good video signal with test patterns for adjusting the screen alignment of televisions. Common patterns include a series of dots and vertical and/or horizontal lines that aid in adjusting the display. They also produce a series of bars that allow checking the correct display of shades of gray. I plugged it in and it powers up.

post id: 7912670443

posted: 2026-02-02 15:26

updated: 2026-02-12 13:12

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Precision Apparatus Dot & Bar Signal Generator Model E-420, Powers...

Precision Apparatus Co, Inc White Dot & Bar Signal Generator, Model E-420. It was made in Glendale, New York. A dot & bar generator produces a known good video signal with test patterns for...