[kwlug-disc] Cabling for video

John Johnson jvj at golden.net
Tue Sep 27 22:17:14 EDT 2011


On 2011-09-27 01:54, Michael Savage wrote:
> This is the manufacturer's spec for cable.
> Kramer's BC-DGKat7a23 is a shielded twisted pair (STP) cable designed 
> as the ideal companion to Kramer's twisted pair digital 
> transmitter-receiver sets to provide optimum range and performance. 
> The cable is optimized for the new 10GBASE-T applications as defined 
> in IEEE 802.3an and for PoE+.

Specs look like its a high-end cable - maybe not what you need - but 
their equipment could designed for this cable.
ELECTRICAL 	
Propagation Delay Skew 	20ns/100m max.
Velocity of Propagation 	80% nominal.
Impedance 	100?.
DC Resistance 	65?/km (21?/1000ft) @20°C nominal.
Max Resistance Unbalanced 	2%.
Capacitance 	1.2pF/m max.


jsquared


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