EverFocus HD-CCTV EPHD08 - Manual (Page 18)

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2.1.4 Cable installation
Please make sure, that the coaxial cable is not squeezed at any position.
Also the max. bending radius defined by the cable manufacturer should be considered.
General rule: maximum bending radius = 10 x outer cable diameter
Bending creates pressure on the center conductor, causing it to move through the dielectric toward the
inside of the bend. This affects impedance and return loss and reduces the maximum possible cable length.
Please try to avoid any BNC - adapter or any connectors in the BNC cable.
Looping HD-SDI signals by BNC T-connectors to other devices is not possible.
2.1.5 BNC-plug
Also the BNC - plug plays an important role for clear HD-CCTV signal transmission.
Standard BNC plugs for CCTV have a quite high attenuation and may cause return losses due to reflection
effects.
We recommend using of HD-Video approved BNC plugs.
2.1.6 Extended cable lengths with repeater EHA-RPT / converter EHA-
SRX
The maximum cable distance between camera and DVR and DVR / repeater can be doubled by installing
EHA-RPT in the video line. EHA-SRX is a combined HD-SDI cable extender and HD-SDI to HDMI
converter.
The HD-SDI output of EHA-SRX allows adding one more complete coaxial cable length.
* max. coaxial cable depends on installed cable type