If you prefer to buy them, we mount these cables in a custom length, available on BNC or Spdif connectors. How to make a BNC cable. Assembling a BNC connector.
We will need BNC crimping tool and wire stripper. Strip the positive pole 5mm and place the tip of the connector. Next we will crimp the tip. To crimp the connector place the tip or shielding in the corresponding socket and press hard. Buy on Amazon. Place all the wires of the shielding correctly in the BNC connector that we will then crimp. Order BNC cable. The first step is to cut the cable to the required length. Consider using a cable tie or wire tie wrap to coil the cable leaving sufficient loose cable at each end to facilitate making the connection.
Make sure that you have the connector components ready to be used — the plug body, the centre pin, and the sleeve should be laid out where you can reach them easily. Now you need to strip the cable using the following strip dimensions:. All cuts must be sharp and square. Make certain that you do not nick the braid, the dielectric insulation, or the centre conductor. The easiest way to do this is to use a multi-cut coaxial cable stripper preset to the correct distances and depths. You can order one from our e-shop.
Next slide the centre pin onto the centre core, making sure that it butts up against the insulation. Leaving a gap can lead to short circuits, so this is a vital step. Now, use the crimp tool to permanently fix the centre pin in place. Note that in the diagram above the braid has been opened out slightly but not peeled back.
This is the preferred method as it allows the braid to remain entwined whilst still allowing the stem of the plug body to slide underneath ready to be crimped into place. Once you have the braid ready, slide the centre pin into the plug body ensuring that the braid slides down the outside of the stem.
When you have pushed it far enough into the body there should be a definite click as the pin locks into place. Make sure that the braid does not flair out at the plug body or it may extend below the sleeve at crimp time looking unsightly and potentially leading to reliability issues. Slide the sleeve over the braid and the plug stem until it touches the plug body, and then use the crimp tool to affix the sleeve to the cable and the plug. Note that the crimp tool has two definite areas within the jaw — there will be an angled section and a rounded our empty outer section.
The outer section causes the crimped sleeve to have two definite areas — the crimped area which supports the connection and holds the cable in place, and the uncrimped area which acts as a cable strain relief. In order to ensure that these areas are correctly located, when actually crimping the rounded or empty section of the jaw must face away from the plug, and the plug must physically touch the jaw of the crimp tool.
Squeeze until the jaws release and the process is complete. Repeat the process for the other end of the cable. Having made the cable, it is very important to check that you have not made any mistakes — particularly electrical ones since a short circuit can damage connected equipment and an open circuit will mean that the cable will never work.
If you have a suitable network cable tester such as our part MNT, available from our e-shop you can simply connect both ends of the cable to the tester and read off the connections — Pin 1 should connect to pin 1 and pin 2 should connect to pin 2.
If either does not connect you have an open circuit connection, and if both lights illuminate at the same time you have a short circuit. If you do not have such a tester, you can use a normal test meter such as our part MT, available from our e-shop to do the testing. If the meter has a beep setting, you can use that for an audible test. Otherwise, set it to read ohms and touch the two test prods together so that you can see what reading you should expect.
First, test for short circuit: on one of the plugs touch one test prod to the centre pin and one to the plug body. If there is a beep or the meter reading changes if you are set to ohms then you have a short circuit and the cable must be remade. You only need to test one end of the cable, since a short circuit will be apparent from either end. Second test for open circuit: first touch one test prod to the centre pin at one end of the cable and touch the other prod to the centre pin at the other end.
If you get a beep or the reading changes if you are using ohms then you do have a connection so the connection should be OK. Repeat the process for the body of the plugs, and you should get the same result. If either of these tests fail the cable will need to be remade. Leads Direct makes great efforts to provide accurate and complete information. However, portions of the information contained in this website and any documents viewed on it or downloaded from it may be incorrect or not current.
Any errors or omissions should be reported for investigation and correction. The information provided in any documents whether on our website or otherwise is provided "as is. If you need any further information please email our sales team or telephone one of our hotline numbers:. General Information: info leadsdirect. Case Studies Testimonials from our happy customers.
Technical Library Our wide library of technical information. Fitting BNC Crimp Connectors This tutorial covers the fitting of three part BNC crimp connectors to RG59 coaxial cable, but it is also appropriate to many other types of coaxial cable and RF connector — things like the strip depth may change but the principles are the same.
The tools you will need In order to make a cable using BNC connectors you will need some tools. For the purposes of this tutorial you will need the following Tools: A set of cutters to trim the cable to length A good coaxial cable stripper is a very useful tool and will ensure that the cable is accurately stripped reducing the risk of both short and open circuit connections A good quality crimp tool capable of handling a wide range of different sizes of crimp — the centre pin and the sleeve are hugely different in size.
Stripped RG59 cable Making the cable The first step is to cut the cable to the required length. Now you need to strip the cable using the following strip dimensions: a Testing the Cable Having made the cable, it is very important to check that you have not made any mistakes — particularly electrical ones since a short circuit can damage connected equipment and an open circuit will mean that the cable will never work.
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