As CCTV cable crimping

The crimping process consists usually compress a terminal to a certain cable communications, in this case we will explain how to perform this process for a coaxial CCTV that connects a video surveillance camera to a recorder with a BNC connector.

BNC connector

A connector for coaxial cable, which carries two polarities is live (positive) and the outside, the inside or mesh (negative) that performs the function of shielding to prevent interference, this type of connection allows to continue that screen on the own connection between devices.

BCN connector used in CCTV
BCN connector used in CCTV

It is a robust connection prevents more losses than others and having a “fit” in 90 ° turn prevents it is unplugged if not intentionally, so is the connection more used for CCTV video surveillance cameras.

Parts of the cable coaxial for CCTV

The coaxial cable has an outer insulation that protects the whole integrated, a mesh that as mentioned does screen to avoid interference an intermediate insulator which makes a capacitive between the mesh and the Center conductor function and central or live conductor which is traditionally called alive, because it is he who carries the information (actually lead them both each polarity but outside performs the function of screen).

Coaxial cable for CCTV
Coaxial cable for CCTV

Strip the coaxial cable

In a first step Peel the wire, approximately will separate approximately two centimeters the outer insulating layer, dejandoen first mesh whole in the bare.

Bare coaxial cable
Bare coaxial cable

Removal of the mesh and stripped of the intermediate insulator

Then remove the mesh back, and peel the intermediate insulation leaving three or four live mm (each type of connector BCN may vary), do not forget to put the outer metal on the wire at this point.

Removal of the mesh
Removal of the mesh

First crimp, live.

Once the mesh back, ensuring no thread can make contact with the living prepare to insert a small metal bullet shaped and trying to touch completely isolate intermediate.

Once introduced into the cable, we look for the gap in our crimping tool and pressed to make the contact between both, generally the hole is between the small or the smallest second.

First crimp, live
First crimp, live

Second crimp, mesh

Once connected the live, colcamos connector outside of it and join it to the metal we strive that there is good contact between mesh, connector and exterior metal and crimpamos.

Of mesh crimping
Of mesh crimping

Connection of the camera

Once you mount the camera, will the same process in another terminal and connect to the recorder, amplifier, monitor…

Connection of the camera to CCTV
Connection of the camera to CCTV

Power

Some coaxial cables for CCTV have two additional wires between the outer insulation of the coaxial and a second isolate of the set, these wires are red and black and are used to bring food to our videovigancia devices. Not go in detail but is so simple as put the male in the place where put the transformer (usually be 12v) and the female in the part where this our camera of CCTV. Black is negative and Red is positive, simply plug the Red where we see a + and black in-(is the same both for the male as female).

12V power
12V power

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