Philips PM5540

'PM5540' Philips Pattern (4:3)

PM5540 variant used by Sjónvarpið, SDR, SWF and SFB.^[1][2]

The Philips PM5540 is a monochrome test pattern generator^[3] that could be considered a black & white predecessor of the widely used Philips PM5544 test pattern. It has been used in Australia, Abu Dhabi, Denmark,^[4] Israel,^[5] Qatar and the Netherlands.^[6][7][8][9] A heavily modified version of the PM5540 test card was used by Sjónvarpið of Iceland from 1966 until 1982, and the latter test card was also used by some regional broadcasters of the German public broadcasting corporation ARD (such as Süddeutscher Rundfunk and Sender Freies Berlin) as well as by the national German public broadcaster ZDF.^[10]

Some features of the main test card:^[11][3]

• Background - grid of 14 x 10 squares, each square with a white border 2 raster lines thick;
• Black and white squares - around the borders, with the four corners being white
• Circle - has a diameter of 440 scan lines;
• Definition lines - gratings corresponding to 0.8, 1.8, 2.8, 3.8 and 4.8 MHz, allowing measurement of image bandwidth and associated horizontal resolution
• Staircase - grayscale linear gradation in 5 steps
• Background - uniform 50% lightness gray background
• Needle pulse - white pulse on black background

Besides the main "Complete Pattern", the hardware was capable of generating other patterns named as "Crossed Lines", "Black/White Steps", "Definition Lines", "Sawtooth", "Vertical Bars" and "Blank Pattern".^[3][12][11]

References[]

External links[]

• PM5540 Black/White Pattern Generator
• PM5540 Manual
• Philips TV Measuring Equipment, 1980

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