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Author
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Topic: SDI cables.
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Bruce Hansen
Jedi Master Film Handler
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Posts: 847
From: Stone Mountain, GA, USA
Registered: Dec 1999
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posted 08-14-2013 04:51 PM
Most cabeling today is avbl in the ten colors of the "color code" (same as resister color code, except that black = 10 in cable color code and 0 in resister color code.
Brown = 1 Red = 2 Orange = 3 Yellow = 4 Green = 5 Blue = 6 Violet = 7 Gray = 8 White = 9 Black = 10
I see a lot of people using 1694A type cable for short runs. This is silly. 1694 is big, stiff, heavy, expensive, and hard to work with. For short runs use 1855A (or Gepco VDM-230). It will transprot HD-SDI up to 200 feet. 1505A (RG-59 size)(or Gepco VPM-2000) is good up to 300 feet. 1694A is good up to 340 feet. DO NOT distort the cable dimentions with tight bends or tight tie raps, or walking on it or running things over it. This can cause the cable at that point to change impeadence, and that will cause problems due to the short wavelengths involved. To be safe, derate the distances a little, that I gave you above.
Just to be clear 1505A is NOT the same thing as the old RG-59 type cable 8241. But 1505A is the same size as RG-59.
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