Posts Tagged ‘POE’

What are IP cameras?

Wednesday, July 29th, 2020

Many people are familiar with the term ‘security camera’ but are not quite sure what an ‘IP camera’ is and what ‘IP’ actually means. IP stands for Internet Protocol and is the standard that sends data across a network. 


Sanyo VCC-HD4000P added to webshop

Tuesday, January 20th, 2009

Sanyo VCC-HD4000P Megapixel Camera

We mentioned Sanyo’s new HD4000 high definition camera back before Christmas.

It’s a four megapixel camera supplied with built-in 4MP lens and 4 million pixel progressive scan CMOS sensor to deliver sharp clear images.

It’s built-in 10X optical zoom lens makes the Sanyo HD4000 an ideal solution for banking and retail CCTV applications where there may be a requirement for close-up detail of any incidents.

The VCC-HD4000P also offers dual streaming H.264 and JPEG, enabling simultaneous high definition recording and live monitoring across a network.

An HDMI ouput allows the full quality of the camera’s images to be realised on an HD monitor, whilst there is also a BNC connector enabling viewing on a traditional CCTV monitor.

This camera also has the facility for on-board video recording to an SD card via its built-in SD slot, or local connection (via USB) to an external HDD (Hard Disc Drive).

Other features include:

  • Motion detection
  • Privacy masking
  • Automatic email transmission upon alarm
  • Power Over Ethernet (POE) support
  • 10 X optical zoom
  • 16 X digital zoom
  • A combined 160 X zoom capability

Click the link to learn more about the Sanyo VCC-HD4000P IP CCTV Camera

Sanyo HD 4000 Four Megapixel Full HD CCTV Camera promo site

Tuesday, December 23rd, 2008

Sanyo VCC-HD4000 4 Megapixels Full HD Network CameraSanyo have launched a new 4MP HD CCTV camera – their model VCC-HD4000.

They’ve built a rockin’ promo website to launch this new IP CCTV camera (switch your speakers on!).

It’s got a great specification, including:

  • 4 megapixel camera
  • built-in 10X optical zoom lens with auto-focus
  • 16X digital zoom in addition to the optical zoom
  • Day/Night capability with IR cut-filter
  • Dual stream H.264 and JPEG
  • POE (Power Over Ethernet) ready
  • SD memory card slot for video storage at the camera
  • USB port for direct attached USB HDD
  • HDMI port

Sanyo VCC-HD 4000 IP CCTV Camera now available to buy online from our webshop.

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Power Over Ethernet (POE) Explained by Veracity

Tuesday, December 16th, 2008

Power Over Ethernet brings some great additional benefits to the application POE experts Veracityof IP security devices such as network cameras.

Essentially, you can power the camera (or other network device) via the ethernet data cable:

  • a single cost-effective network cable to each device
  • safe low-voltage supply
  • easily extend your network
  • no need for skilled electrical installation labour
  • a single device POE mid-span extension
  • multiple devices via a POE switch
  • the ability to ‘reach’ 100m or more from your existing network
  • 802.3 POE standards allow common solutions for many devices
  • even devices that do not have POE built-in can be used with POE supplies (by use of an Active Splitter at the device end)

We take a lot of calls about the use of POE with IP CCTV and are aware that people find some of the concepts a bit tricky.

Veracity have just produced some really helpful white papers to explain power over ethernet technology and its application:

“Power Without the Struggle” – the benefits of POE technology and how to take full advantage of them …

“POE Explained” – POE concepts through to the latest 802.3at ‘POE Plus’ solutions …

Veracity’s OUTREACH & OUTSOURCE solutions enable you to extend POE beyond 100m.

These new guides from Veracity are written in plain English with helpful graphics and diagrams to aid your understanding. We recommend you take a look.

use-IP Ltd are Authorised Partners of Veracity.

You can find their range of POE products in our POE shop.

Power Over Ethernet

Thursday, November 27th, 2008

Power over Ethernet (POE) allows you to very simply install network cameras (or other network devices such as VOIP phones) with just a single network cable.

We get a lot of queries about POE, so we’ll try to give you a quickand simple explanation:

An ethernet network is the standard format of network cabling that you use to connect your networked and other devices.

The cables used are commonly known as Cat5 cable (other variants such as Cat5e and Cat6 are available).

The plugs on the ends of the network cables are terminated in RJ45 connectors.

Each Cat5 network cable contains four pairs of cable cores, all of these cores are terminated in the RJ45 plugs, but only two of the pairs are actually used for the transmit and receive signals used by the network for data transmission.

This means that there are two pairs of spare cable cores available within every network cable.

Quite simply these can be used to carry power, electricity, volts & amps to devices on the network.

There’s an IEEE standard governing the proper format and use of Power over ethernet, and the basic version of this is the 802.3af standard. This standard governs things such as the configuration and use of the spare cores and the voltage used being common in all 802.3af compliant devices (nominally 48 volts DC). This relatively high voltage is used to enable the power feed to be useful over relatively long distances – up to 100m. If a lower voltage was used, the voltage drop caused by the cable length might render the even lower voltage arriving at the far end useless for powering the camera.

So, you can take a device known as a poe power injector and place this at the source end (PC, control room …) and route your network cable through the power injector on its route to the camera.

At the camera end, if the camera is a POE enabled device (has 802.3af compliant POE built-in) you can plug the far end of the network cable directly into the rear of the camera and the internal camera circuitry will split-out from the network cable the power that it needs to operate. In this way just a single network cable is all that is required to both feed power to the camera and to take the IP video signal away from the camera and back to the PC or other recording device.

This Power Over ethernet solution makes for really simple low-voltage installations without the need for a specialist electrical installation contractor, or the requirement for mains or other power cables. Hence, you save not only labour costs but also the cost of a second copper cable.

If the camera or network device does not have built-in POE compatibility, it is still possible to use Power over Ethernet by deploying a device called an Active Splitter at the camera end of the network cabel. An active splitter (as the name implies) is simly an electronic gadget which splits the power and data signals from the one combined network cable to the two cables that a non-POE device requires; one cat5 for data, one power for the camera supply. NB if you are using a splitter be sure to select a device which is able to transform from the 48V carrier signal used in POE down to the correct voltage for the camera you are using (likely to be 3.3V, 5V, 9V, 12V or similar) and is able to present the power in the correct physical format to plug into the rear of the camera e.g. 4.5mm barrel connector.

So, as you can see from the above, the basics of power over ethernet are simple, but there are a few potential pitfalls to catch out the unwary. If you need any help with selecting the correct POE devices for your application please just give us a call.

use-IP Ltd supply a range of POE devices.

Further explanation of Power Over Ethernet