[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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