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.

Fiber media converters For Video Surveillance Cameras

As a kind of Media Converter, Fiber media converters this known as fiber transceivers or Ethernet media converters, are quite obvious networking devices those make it possible for connecting two dissimilar media types such as twisted pair Cat-5 or Cat-6 cable with fiber optic cabling. They may be essential in interconnecting fiber optic cabling-based systems with existing copper-based, structured cabling systems. Fiber ethernet media converters support many different communication protocols including Ethernet, Fast Ethernet, Gigabit Ethernet, as well as multiple cabling types such as twisted pair, multi-mode and single-mode fiber optics. Fiber media converters can connect different Local area network (LAN) media, modifying duplex and speed settings.

For video security and surveillance professionals, analog video-based CCTV systems have been the tried-and-true technology for many years. However, these same professionals are the first to recognize the migration of Ethernet into new applications beyond the typical office LAN and how Ethernet is playing a role and introducing new challenges to video security networking.

For years, Transition Networks has been talking about the benefit of fiber optic cabling and how media converters can provide a cost effective method of deploying fiber in local area networks and overcome the limitations and drawbacks of copper UTP cabling. These same benefits can be realized by security and surveillance professionals when they integrate fiber into their video networks.

For example, switching media converters can connect legacy 10BASE-T network segments to more modern 100BASE-TX or 100BASE-FX Fast Ethernet infrastructure. For instance, existing Half-Duplex hubs may be attached to 100BASE-TX Fast Ethernet network segments over 100BASE-FX fiber. When expanding the reach with the LAN to span multiple locations, fiber transceivers are useful in connecting multiple LANs to form one large campus area network that spans more than a wide geographic area.

Fiber media converters support a variety of data communication protocols including Ethernet, Fast Ethernet, Gigabit Ethernet, T1/E1/J1, DS3/E3, as well as multiple cabling types for example coax, twisted pair, multi-mode and single-mode fiber optics. Media Converter types range from small standalone devices and PC card converters to high port-density chassis systems offering many advanced features for network management.

On some devices, Simple Network Management Protocol (SNMP) enables proactive management of link status, monitoring chassis environmental statistics and sending traps to network managers in case of a fiber break or perhaps link loss on the copper port.

 

Fiber media converters can connect different Local area network (LAN) media, modifying duplex and speed settings. Switching media converters can connect legacy 10BASE-T network segments to more recent 100BASE-TX or 100BASE-FX Fast Ethernet infrastructure. For instance, existing Half-Duplex hubs can be linked to 100BASE-TX Fast Ethernet network segments over 100BASE-FX fiber.

When expanding the reach of the LAN to span multiple locations, media converters are of help in connecting multiple LANs to make one large campus area network that spans more than a limited geographic area. As premises networks are primarily copper-based, media converters can extend the reach from the LAN over single-mode fiber approximately 130 kilometers with 1550 nm optics.

The coaxial cabling utilized in analog CCTV networks suffers from transmission distance issues. The accepted distance for coax is 185 meters. While this has worked well in the past, the demands for increasing the surveillance coverage have pushed camera locations beyond the standard distances.

As for Ethernet and IP cameras, this distance is even more restrictive at 100 meters. Offering transmission over greater distances, fiber cabling is starting to play a signifigant role in surveillance networks. Fiber cabling supports transmission distances up to 2km on multimode fiber without the need for repeaters or signal boosters - with even greater distances available on single mode fiber.

Indoor applications with florescent lights, electric motors, and other sources of electromagnetic interference (EMI) along with sources of radio frequency interference (RFI) can cause disruptions and poor picture quality issues for video over Coax and UTP cabling. The transmission from cameras located outdoors is susceptible to these same conditions as well as the effect from electrical/lightening storms. Due to the nature of how data is transmitted over fiber optic cabling, it does an excellent job of blocking

this electrical interference and protecting the quality of the data.

Wavelength-division multiplexing (WDM) technology in the LAN is very beneficial in situations where fiber is at limited supply or expensive for provision. In addition to conventional dual strand fiber converters, with separate receive and transmit ports, there are also single strand fiber converters, which can extend full-duplex data transmission approximately 70 kilometers more than one optical fiber.

Other benefits of media conversion include providing a gentle migration path from copper to fiber. Fiber connections can help to eliminate electromagnetic interference. Also fiber media converters pose being a cheap solution for many who need it switches for use with fiber along with have enough money to pay for them, they can buy ordinary switches and make use of fiber media converters to make use of making use of their fiber network.

As a fiber optic media converter, you can use it anywhere in the network to integrate newer technology with existing equipment to support new applications, technologies and future growth. Fiber Converters are key aspects of Optical Networking because its long distance operation, high bandwidth capacity and reliablity make fiber optics probably the most desired channel for data communications. Instead of costly, across-the-board upgrades, media converters can extend the productive lifetime of the existing cabling along with the active equipment. FiberStore offers a wide variety of professional fiber optic media converters for Fast Ethernet, Gigabit Ethernet, Serial Datacom interfaces and E1 or T1 voice/data communications.

  

To aid in the deployment of fiber in these security and surveillance networks, Transition Networks has specifically designed a copper to fiber media converter for analog video applications. These converters are available to support both fixed-focus cameras as well as pan-tilt-zoom (PTZ) cameras. As IP cameras begin to replace analog cameras, traditional Ethernet media converters can be used for the fiber integration. Most IP cameras also support power-over-Ethernet (PoE) technology which makes installation of the cameras easier since the camera can be powered over the UTP Ethernet cable. PoE switches, PoE injectors, and PoE media converters are all available to create the functional network needed in today’s hybrid video security and surveillance applications.

Also Visit: http://arindamcctvaccesscontrol.blogspot.in/2013/12/the-role-of-fiber-in-video-networks_1043.html

Dynamic DNS in Wireless CCTV Systems (For Beginners)

Wireless internet CCTV, also known as IP CCTV, communicates through your broadband line and onwards to the internet.  This can cause problems if your home broadband has a dynamic IP address, because when you want to connect to your cameras from outside, you won’t know what that address is.  This article shows you how to overcome the problem by using Dynamic DNS.

Most home ADSL packages still give you a dynamic or changing IP address, which is simply the address of your home’s network on the internet.  These addresses are allocated from a pool of available addresses and allow the internet provider to have fewer addresses than customers, saving money. 

This used to work well because early broadband modems “dialled” a connection when the attached computer requested it, rather like the old dial-up modems.  Nowadays, though, modern wireless modem/routers tend to remain connected permanently, so we are reaching the point where the internet provider is having to allow one IP address per customer, and may as well allocate a static or unchanging one.  However, as of today most people have dynamic addresses and this is an obstacle to contacting your wireless internet camera from the outside world, as I will explain in the next section.

Just as your broadband line has an IP address, so your camera has its own address or port.  For example, if your home IP address is 91.103.218.59 and the camera’s port is 8765, assuming your router is set up with port forwarding (outside the scope of this article) you can contact your camera by typing “http:// 91.103.218.59:8765” into a browser window.  This may work today, but by tomorrow that  91.103.218.59 IP address could have been allocated to someone else, and you will not find your camera on the end of it any more.  This is where Dynamic DNS or just “DDNS” comes in.

DDNS allows you to contact your wireless internet CCTV camera using an address that never changes, even when your broadband’s IP address changes.  It requires two things in order to work: a DDNS service provider and a router or camera that offers DDNS support.

Most modern wireless routers offer DDNS support, but few internet CCTV cameras do.  As long as either the camera or the router offers this feature, all is well.  First, you visit the website of the DDNS service provider and sign up for an account.  The most popular provider is dyndns.com and it’s free.  You choose your own unique internet address such as “mywirelesscamera.dyndns.org” and you will also have a user name and password.  (Incidentally, the purpose of this service is simply to make that link between your IP address, whatever it happens to be at the time, and a fixed address or domain name.)  Having registered a DDNS account, next you log into your router’s administration pages and find the DDNS section.

Here you simply key in the DDNS provider name, your account details and the address that you chose.  Now, whenever your broadband provider changes your home IP address, your router will tell dyndns.com, and this means you can always contact your camera from wherever you happen to be, by keying the same unchanging address into a browser window, in our example: “http://mywirelesscamera.dyndns.org:8765”.

Biometricization of systems in India

Heading towards “Biometricization” of systems in India

Biometrics Technologies are searching new ways to spread its limbs in recent technology driven era. Every system within the public domain is proposed to be made transparent, secure and safe in its operation. Looking at these demands, Government of India is trying to implement Biometrics Technology in their system under Digital India program. This initiative from Government is really appreciable and needs an applaud. This will really help to curb corruption, larceny, and truancy. Also, the implementation of biometric technology will help layman gain the services in more effective ways. 

We all know biometrics technology is one of the most secure, safe and reliable way of human identification. So, it is quite necessary to implement this technology in every process under Government of India. This will bring a fruitful result in comparison to other conventional methods. Through this blog, I would like to throw some light on a few sectors where Biometrics Technology has been implemented or are proposed to be implemented in the coming days.

Attendance System: As the new Govt took the charge at the center, they firstly implemented Biometric Attendance System in Government offices. Also, they launched an attendance portal www.attendance.gov.in where the attendance of every employee is monitored. Its implementation has really proved fruitful and now they are showing up at offices right in time. As a result, Govt. Officials are found in their workplace.

E-PDS Scheme: Slowly and steadily, every state governments are implementing biometrics technology in the Public Distribution System at different levels. This will show a drastic change in the whole process of ration distribution. The poor people who usually are kept aside from govt. aides now will be directly benefited. The mediators will vanish and e-ration card holder can enjoy their right to the food.

Skill Development: Under the skill development program, the implementation of Biometric technology is really an effective state. Each and every student's attendance is marked in biometric devices with its location and uploaded to the central server. This has reduced larceny and made the process more transparent and effective.

Passport system: Also, the government has proposed to make biometric characteristic a mandatory  verification during passport issue. This step has been taken to reduce the crime and illegal immigration. Effective implementation will lower down, the rate of crimes under different circumstances.

For Criminal Records: National Crime Record Bureau (NCRB) has decided to launch a software which will identify the criminals. The implementation of Biometrics will help officials to know whether the criminal had ever been previously prosecuted for any other crime. This will help in the faster procedure of judgments and other trials.

National ID for Fishermen: The major setback of fishermen is their identification. This also leads to prosecutions of fishermen and they are sent behind the bars without any charge. So to resolve this issue, the government has decided to issue National ID cards with biometric for fishermen.

The rapid implementation of Biometrics Technology in different fields is definitely going to solve major common issue every citizen faces into their day-to-day life. Biometrics Technology has a tendency to change the approach of Government officials towards safe, secure and transparent systems. So, Star Link India, being the largest Indian manufacturer of Biometric Attendance Systems, endorses the step of Govt. and promises full support from their side.