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HD Video Balun (TVI/CVI/AHD, 8MP)

BALUN-8MP

Carries an analogue HD camera signal over ordinary network cable instead of coax, up to 8MP.

Connectors: BNC / RJ45

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From its box

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End A

BNC

01 Centre conductor Carries the video signal — the copper wire at the very core of the coaxial cable.
02 Bayonet lock Push and give it a quarter turn to lock. That is what keeps a camera connected on a pole in the wind.
03 Braided shield The copper braid surrounds the core and holds the cable's impedance constant along the whole run (50 or 75 ohm, depending on the cable).
04 50Ω vs 75Ω BNC connectors come in two incompatible impedances: 50 ohm (RF/data standard) and 75 ohm (video/broadcast standard). Mixing them causes real signal loss (about 5% per mismatch point) — a common mistake when a 50 ohm BNC cable ends up on a 75 ohm CCTV run.
05 Strain-relief boot Stops the wires flexing where they leave the plug — the exact point most cables fail.
06 Outer jacket The outer sheath protecting the conductors inside from abrasion and moisture.

Technical illustration, not a photo of the actual product

End B

RJ45 (8P8C)

01 8 gold contacts The eight blades pierce the wire insulation to touch the copper directly — four pairs, two for transmit and two for receive.
02 Locking clip Snaps inside the socket so vibration cannot pull the plug out. A snapped clip is the number-one cause of intermittent network drops.
03 T568A vs T568B Two equivalent wiring standards: T568A puts the green pair on pins 1-2 and orange on 3-6; T568B swaps them. Performance is identical as long as both ends of the same cable use the same standard.
04 Strain-relief boot Stops the wires flexing where they leave the plug — the exact point most cables fail.
05 Outer jacket The outer sheath protecting the conductors inside from abrasion and moisture.

Technical illustration, not a photo of the actual product

How it works

Cable construction

Four pairs, each twisted at a different rate from its neighbour. The twisting makes both wires of a pair pick up identical noise, which then cancels when the far end subtracts them. That alone is why networking works over a hundred metres.

Technical illustration, not a photo of the actual product

Applications

Installation and maintenance work on site

Technical specifications

Connectors	BNC / RJ45

Compatible with

SFTP Cat7 Cable - 300m drum Outdoor UTP Cat6 Cable - 305m drum RJ45 Cat6 Plugs (box of 100)

Commonly bought with

BNC Connectors (box of 100)BNC Coaxial Cable - 1m

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