Every connector causes a reflection, a short cable has less attenuation to reduce the beat (CSO) allowing it to reflect again (CTB) when it hits the original connector. When the signal is reflected it is at a lower level than the original source. A poorly crafted connection can cause a larger reflection resulting in interference of the original signal (ghosting in analog, tiling in digital, latency in data, jitter in phone). In most applications it is not an issue, but occasionally you get one that will cause a service tech fits. With hard line cable we use 6' as a minimum between connectors to reduce the issue to a level that is almost undetectable without a spectrum analyzer.
As far as temperature related issues, a 6' RG6 jumper is going to have less than a 1/32" change over a 100* swing. Temperature problems are most likely in the plant with an AGC in an amp not set up correctly or an overly long spacing. Heat = resistance = attenuation
Re: Short coax jumpers?
Member #: 13444
Registered: 1996-2001
Posted:
1616
Name:
Brian Farmer
Name:
Brian Farmer
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