Twisted Pair Cabling Connection Tips

Twisted Pair Cabling Connection Tips

 1. Recommend to use UY connectors for cable connection or soldering by parallel (as Picture.) Do not bent it for 90° (as Picture) to avoid any impendence not matching problem (Interference).

2. After cable connection, the cable joint point must be twisted back for same pair; the untwisted length must be less 10mm to avoid any interference.

3. After finish the joint cable, must be do “waterproof work” to avoid any oxidation after long time use, affect any picture quality.

4. Do not bend CAT 5 twisted pair during the cabling. To make angle less than 90° to avoid any impendence not matching problem. (Interference).

5. If your budget acceptable, then not use all 4 pairs for transmission. Leave one pairs as spare cable for any future added camera or help to resolve interference cable.

6. Do not put the remaining cable like a circle (as Picture) and not near any power box, transformers, motor, Fluorescent Lights. This way could avoid any interference caused.

Straight and Crossover cable

What are Straight and Crossover cable

Dear All CCTV, Access Control Technician/Engineer now make clear on this Two type of CAT Cable. Common Ethernet network cable are straight and crossover cable. This Ethernet network cable is made of 4 pair high performance cable that consists twisted pair conductors that used for data transmission. Both end of cable is called RJ-45 connector.

The cable can be categorized as Cat 5, Cat 5e, Cat 6 UTP cable. Cat 5 UTP cable can support 10/100 Mbps Ethernet network, whereas Cat 5e and Cat 6 UTP cable can support Ethernet network running at 10/100/1000 Mbps. You might heard about Cat 3 UTP cable, it's not popular anymore since it can only support 10 Mbps Ethernet network.

Straight and crossover cable can be Cat3, Cat 5, Cat 5e or Cat 6 UTP cable, the only difference is each type will have different wire arrangement in the cable for serving different purposes.

Straight Cable

You usually use straight cable to connect different type of devices. This type of cable will be used most of the time and can be used to:

1) Connect a computer to a switch/hub's normal port. 
2) Connect a computer to a cable/DSL modem's LAN port. 
3) Connect a router's WAN port to a cable/DSL modem's LAN port. 
4) Connect a router's LAN port to a switch/hub's uplink port. (normally used for expanding network) 
5) Connect 2 switches/hubs with one of the switch/hub using an uplink port and the other one using normal port.

If you need to check how straight cable looks like, it's easy. Both side (side A and side B) of cable have wire arrangement with same color. Check out different types of straight cable that are available in the market.

Crossover Cable

Sometimes you will use crossover cable, it's usually used to connect same type of devices. A crossover cable can be used to:

1) Connect 2 computers directly. 
2) Connect a router's LAN port to a switch/hub's normal port. (normally used for expanding network) 
3) Connect 2 switches/hubs by using normal port in both switches/hubs.

In you need to check how crossover cable looks like, both side (side A and side B) of cable have wire arrangement with following different color . Have a look on these crossover cables if you plan to buy one. You can also find more network cable choices and information from Comtrad Cables.

In case you need to make a crossover cable yourself! You can use crimper to do it.

Lastly, if you still not sure which type of cable to be used sometimes, try both cables and see which works.

Note: If there is auto MDI/MDI-X feature support on the switch, hub, network card or other network devices, you don't have to use crossover cable in the situation which I mentioned above. This is because crossover function would be enabled automatically when it's needed.