Security Camera CCTV Cables: Siamese vs. Ethernet vs. Coaxial
Siamese RG-59 and Ethernet Cat5e/ Cat6 are the most common choice for video surveillance systems and security cameras. In this blog, we discuss the ways in which their applications differ.
But first, let's compare the performance of Siamese and Coax cables in security camera systems.
What is the difference between Siamese And Coax Cable?
Comparing Siamese and coaxial cables seemed confusing as they are based on the same premise. Both Siamese and coax cables have the RG-59 variation used in security cameras. Surveillance systems only use the Rg-59 variation because it is thick enough and flexible. Rg-6 and Rg-58 cables are not an option.
What is an RG-59 coax cable, and how is it used in security cameras?
A Rg-59 coax cable is a radio-grade cable used for carrying data. While it carries various types of signals, including voice and ethernet, it primarily carries video signals. A RG-59 coax cable can be used in security cameras, but it will only carry the video signal and nothing else. Rg-59 coaxial cable is incapable of carrying data other than the video signal in these circumstances.
In a CCTV system, Rg-59 coaxial cables can carry video signals from security cameras to recorders or monitors.
What is an RG-59 Siamese Cable, and how is it used in security cameras?
A RG-59 Siamese cable is a variation of Rg-59 coax cable with the added benefit of carrying power. This is achieved by adding two thin copper wires to the cable. Therefore, a Siamese cable is a more multifunctional coax cable, making it a more popular choice for CCTV. For instance, it can carry the video signal from the camera to recorders and monitors and the power from the power adapter inside the recorder back to the security camera.
Using Siamese vs. Coax Cables in Video Surveillance
Rg-59 Siamese and Coax cables function in a similar way in security cameras, but the former also carry power, making them more multifunctional. Use RG-59 coaxial cable only if your only goal is to carry a video signal. If you need the cable to carry power, choose RG-59 Siamese instead.
Ethernet vs. Siamese Cables in Security Cameras
Next, let's compare ethernet and Siamese cables. Both these communication cables are top choices for video surveillance systems. They are both capable of carrying video signals and data alike. So, how do they compare?
What is an Ethernet Cable?
Ethernet cable is a cable consisting of two insulated copper wires. The cable carries Ethernet signal and a telephone signal. Aside from security cameras, ethernet cables are mostly used for high-speed Ethernet networks. Most popular Ethernet cables are Cat5, Cat5e, and Cat6. Ethernet cables are also referred to as category cables (based on the names of specific cables), network cables, and twisted pair cables (based on their structure - two copper conductors twisted in pairs). Ethernet, twisted pair, network, and category cables are the same.
How are the Ethernet Cables Cat5, Cat5e, and Cat6 Used in Security Cameras?
Ethernet cables like Cat5, Cat5e, and Cat6 are a traditional element of IP Security Systems.
IP security systems are the newer and most expensive variation of security systems with better video quality, and higher resolutions than traditional CCTV analog video surveillance systems. IP cameras are more secure and reliable but also more expensive. IP security systems use Ethernet cables over coax ones because they operate through the network.
- In IP video surveillance systems, twisted pair Ethernet cables connect IP security cameras to the network.
- They also connect security cameras to power with a Power over Ethernet (PoE) switch.
- Cat5e and Cat 6 are the most common Ethernet cables for video surveillance systems. While Cat5 may be used, it is relatively slow, making it outdated. Cat5e is cheaper than the newer Cat6 cable.
How is Siamese Rg-59 Cable Used in Video Surveillance Systems?
Siamese Rg-59 Cable is designed for analog and HDTVI video surveillance systems. As mentioned before, these cables combine the properties of RG-59 coax cable and a power cable.
Siamese Rg-59 cables carry the video signal from the camera to the DVR recorder and the electricity from the power adapter to the camera. To operate properly, Siamese cables need 12V DC connectors and BNC connectors.
Analog surveillance systems are cheaper, more abundant on the market, and simpler, as they do not need an ethernet network. However, their reliability and signal quality is poorer.
HDTVI video surveillance is based on the similar mechanism to analog surveillance systems, but the resolution is higher, and the signal quality is better.
Ethernet vs. Siamese: Pros and Cons
- Siamese Cables are significantly more expensive than Ethernet Cables.
- Some buildings have existing Ethernet cables that can be repurposed for CCTV without spending extra money.
- Siamese RG-59 cables are better at EMI and crosstalk protection than Ethernet cables.
- Ethernet cables carry signals at a higher pace than Siamese RG-59 cables.
Conclusion
- Use Siamese RG-59 cables in HDTVI and analog video surveillance systems. If you use a standard coax cable instead, you will need separate cables for power,
- Use Cat5e and Cat6 ethernet cables in IP video surveillance systems.
