If you are much involved in Etymology, the first impression you get from the term “Siamese” is that it has something to do with identical things. Well, your guess is right to some extent. But if you are a novice and intend to buy Siamese Cable, you need to read this guide till the very end.
The Siamese cable is a type of cable in which 2 cables—designed for 2 completely different purposes are conjoined or assembled in one jacket.
Now, this information gives birth to another 2 questions: What do Siamese cables consist of and what are these cables used for?
A Siamese cable comprises a coax cable (usually RG59) with two 18-AWG or 20-AWG dual conductor power cables. All 3 cables are separately and heavily insulated.
The function of these cables is to transmit video signals and run electric power for CCTV and other surveillance camera systems.
The PVC jackets of these cables are incredibly flexible making them easy to install in tight and compact spaces. These PVC jackets also provide high-quality images. The 95% braided coverage keeps Siamese cables structurally intact and prolongs their overall lifespan. Likewise, the braid coverage provides additional security against outside interferences like crosstalk, electrostatic noises, and much more.
What is Siamese Cable?
Siamese could be a term that features a few references. it’s wont to describe things from a sort of cat to joint twins to a language. Within the knowledge world, Siamese cable stands for a cable that’s engineered to incorporate each video and power. In distinction to Power over local area network (PoE), the facility is connected to the facet of the information cable. Edgar Allen Poe makes use of wires supposed for knowledge to transfer power. Siamese cable provides on an individual basis insulated wires of power cables and coaxes cable. This enables correct power to be provided while not meddlesome with the video transmission.
Power Siamese Cable
Having power and knowledge simplifies the installation of the cable by requiring only 1 run. The installer doesn’t need to tie the cables along or create 2 journeys through the wall. To assist even a lot of Siamese cable is sometimes bought in an exceeding spool or a pull-box to run the cable easier. All that’s left when running the cable is adding a termination on every finish to produce the specified knowledge and power connections. Siamese cable lowers the time needed for installation. Siamese cable is commonly employed in television (CCTV) setups and police investigation cameras. The cable provides all needs for the cameras while not the requirement of finding an influence supply next to the install location.
Siamese cable is commonly offered with RG59 coax. This has become the foremost well-liked style of video for these installations. However, the RG6 siamese cable will still be found. Siamese cable still follows the standards and certifications that different cables do. this suggests that a special cable is needed for outside or plenum installations. Take a glance below at what Sewell Direct has got to supply.
Siamese Cables: Usage
CCTV camera installers used to face this big hurdle while installing devices that there was usually no power available nearby, especially at places where they wanted to put the cameras. The added misery was that they require 2 sets of cables: one for transmitting video signals and the other for providing electricity. This increased workload of the installers twofold for installing a single camera. Now consider this for all the cameras in the surveillance system.
Fortunately, the arrival of the Siamese cables has taken installers out of this misery. If you want to buy Siamese Cable, you have to buy it in bulk. You can easily run Siamese cable out of the spool or box, and all you need to do is to ensure proper terminations on each end, once the cable is in place.
This gives birth to another question: as power and video signals rest so close to each other inside Siamese cable, aren’t there heavy chances of interference? The answer is a big no!
These cables are built in a way that power and coax cables are heavily insulated and there is proper spacing between them. This ensures that video signals face no interference issues.
Different types of Siamese cables
There are several variants available on the market. Some variants are made from copper-clad aluminum (CCA) 18 or 20 AWG conductors. However, more preferable are bare-copper or copper-clad steel conductors.
For best results, the shielding of the Siamese cables must be 95pc braid copper. Like all other bulk ethernet cables, these are rated for usage in plenum, riser, or outdoor spaces. So, when you intend to buy Siamese cable, make sure it is rated properly for the intended use. The ratings for these cables are CMG, CMX, CM, CL1, and CL2.
Typical Applications
Siamese cables are used in a wide array of applications ranging from CCTV cameras to home security systems, and from commercial security systems to industrial surveillance installations. These cables are preferred because of their ease of use as they save both cost and time that incur on duplicate cable runs.
How to install Siamese cable?
You can hook up coax by attaching a male BNC (Bayonet Neill–Concelman) connector to plug into DVR, monitoring stations, or CCTV cameras as all CCTV components come with female jacks for video connection.
Power connections are also that simple. For 12-volt DC analog and high-definition cameras, you have to ensure that power cables come with 2.1mm attached power plugs. These plugs will be used to connect to the BNC female connector of the camera.
As power terminal blocks are used by 24-volt dual or AC voltage cameras, therefore, Siamese cable’s lead can be directly connected to the block. The cable will be connected to the “multi-camera master power box” if it is being used on the system end.
If connecting connectors to Siamese Cable Bulk sounds like a herculean task, well, it should not. All you need is a couple of tools and a bit of practice.
Also, you have to make sure that your Siamese cable does not run close to any protrusions as they can inflict damage if you ever pull the cable.
Types of Siamese Cable
You will notice a variety of variations of Siamese cable on the market. Some are created with CCA (copper-clad aluminum) eighteen or 20 AWG conductors, however, copper-clad steel or vacant copper conductors are preferred. The shielding ought to be ninety-fifth decorated copper, and since Siamese cable is rated rather like the other coax, you ought to take care that the cable you’re shopping for is rated properly for its meant use, like in risers, plenums, or outdoors. Cmple’s Siamese cables are all CL1, CL2, CM, CMX, and CMG rated.
As mentioned earlier, you’ll be able to conjointly notice Siamese cable patch cords move match specific cable run lengths, however since it’s uncommon that a CCTV camera is settled specifically twenty-five, fifty, or a hundred feet removed from the system, most installers choose to use Siamese bulk cable which will move correct length.
Siamese Coax Cable
This is a “two-wire” answer, coupled along in one cable that allows pure power and video transmission for BNC cameras. It includes 2 distinct cables, connected in one cable coat. hooked up to that could be a video conductor that sends the video signal from the camera’s BNC connector. Moreover, an influence wire transmits power to the camera from an in-depth power offer to the DVR recorder. Their square measures many distinct grades of siamese cabling accessible for varied video signals. These square measure of 2 main types:
1.Premade Siamese cable: This comes pre-assembled with differing lengths and finishes connectors.
2.Siamese Coax Cable: This comes from a spool or roll of upper quality. it’s no pre-connected connectors, and therefore the user has to place the ends on them and cut them to any length.
Siamese links square measure homocentric links onto that several intensity wires be part of. These power wires may well be divided from the transmission line if the ability supply is distant from the account contrivance.
Why Are Siamese Cable Used?
One of the massive issues installers encounter once putting in place a wired circuit TV system is that there’s sometimes no power accessible wherever they require to put the cameras. that needs 2 runs of cable, one for video and another for the ability. meaning virtually double the work, attachment the cables along for the length of their run, or creating 2 fully completely different cable runs. Are you all done? nice. currently do an equivalent for all of the opposite cameras within the system.
Siamese cable, ready to handle each video and power, makes things simple on installers. it’s sold-out in bulk (usually in lengths of five hundred or a thousand feet), is simply run out from a box or spool, and simply needs the right terminations on every finish once it’s in situ. If desired, Siamese patch cables may also be found for fast security camera hookups, sometimes in lengths between twenty-five and one hundred fifty feet.
There is forever the danger of interference once video signals and power are in shut proximity. the development of Siamese cables, with their significant insulation and correct spacing between the coax and power cables within, ensures that video transmissions won’t be subject to those interference problems.
