Free Guide to HD-SDI

7/30/2019 Free Guide to HD-SDI

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Bring the benefits of High Definition

CCTV to your customers

cost-effectively.

HD-SDI a new opportunity for CCTV installers

If you install CCTV, then HD-SDI is an opportunity you

cant afford to ignore. Many customers will have High

Definition TV in their homes, and will come to expect the

same level of picture quality from a CCTV system. You

can now bring that to them easily and cost effectively

thanks to HD-SDI.

Briefly, the benefits of HD-SDI CCTV are:

High Definition images, making it easier to identify

individuals.

Simple installation using standard co-ax cable.

No need to involve IT Managers as part of the

installation.

If youre new to HD-SDI CCTV, this guide will show you everything you need to know to get started.

Tel: +44(0)1924 528000 Fax: +44(0)1924 528005 Email: [email protected] Web: www.videcon.co.uk


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Megapixel CCTV What is HD-SDI CCTV?

A frame of CCTV footage is made up of pixels. Any

picture with over 1 million pixels is classed as a

Megapixel image and can be referred to as High

Definition (HD). HD Equipment typically has one of two

resolutions:

720P 1280 pixels (horizontal) x 720 pixels (vertical)

1080P 1920 pixels (horizontal) x 1080 pixels (vertical)

720 or 1080 refers to the number of pixels in a vertical

line that make up the picture. The P stands for

progressive the way in which an image is scanned,

compared with the conventional interlaced scan. The

full Videcon range offers 1080p resolution and can be

switched to 720p to allow longer recording times.

Megapixel CCTV has been possible for some time over

IP CCTV networks. So HD-SDI is not the only way to

achieve it, but its arrival makes Megapixel CCTV simple

and affordable for your customers, and easier for you

to install. Thats why its predicted to grow significantly

in the coming years.

Lets consider why IP CCTV has yet to become

mainstream:

To get the full benefits of IP you need Cat 5 cable

rather than co-ax. This makes replacing an existing

system costly.

Installing IP systems can require in-depth knowledge

of network infrastructures.

Smaller businesses in particular may be reluctant to

add more devices to their networks.

Dealing with IT managers can cause delays and

complications.

For those reasons, IP CCTV is more prevalent in new

builds (where there is no issue of replacing co-ax) and

large installations where budget is less of an issue.

HD-SDI on the other hand is well-placed for rapid

growth, so as an installer, it is well worth getting to grips

with this technology now.

HD stands for High Definition, and SDI stands for Serial

Digital Interface a family of standardised, broadcast

quality digital interfaces using BNC connectors. The

standard was adopted by the SMPTE (Society of

Motion Picture and Television Engineers).

Because of its origins in broadcast, the definition and

picture quality of HD-SDI footage is noticeably higher

than a standard analogue signal. The technology has

now been adopted by the CCTV sector. Because it has

been designed with the sole purpose of providing

Megapixel, High Definition footage over standard

co-ax cable, it is perfectly suited to CCTV, where the

majority of existing systems use co-ax.

HD-SDI is significantly easier for experienced CCTV

installers to get to grips with and can easily be used in

tandem with existing analogue cameras. Compared

with IP, installers can install HD-SDI straight away with

next to no training. There is also very little risk of getting

in to complications when installing it, as long as they

are experienced in installing analogue CCTV.

Arrange a

demonstration

to see just how

easy hd-sdi is to

install



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Installing HD-SDI CCTV for your customers

You have two basic options when a customer wants

HD-SDI CCTV a full HD-SDI system, or a Hybrid system

combining HD-SDI with Analogue. Some customers

especially those with an existing analogue CCTV

system may feel that a few HD-SDI cameras in key

positions such as external doors will suffice.

The things you need to consider before

you decide which is right for your

customer are:

Do they have an existing CCTV system?

If so, does it give adequate picture quality

throughout the premises?

Are there key locations where identification is

important?

What is the customer's budget for installation or

upgrade?

Full HD-SDI Installation

Typical applications:

Premises with no existing CCTV system

Premises with an existing system but with a budgetto upgrade

Premises that require high definition for

identification throughout

Pros:

High Definition allows you to identify individuals

throughout the premises.

Can be easily installed on co-ax cable.

No need to involve IT managers to install on an IT

network.

Cons:

Having HD-SDI cameras throughout will be more

expensive than a hybrid system.

Hybrid HD-SDI Analogue Installation

Typical applications:

Premises that already have CCTV but want to

add HD cameras in key locations Premises with no CCTV that dont need High

Definition footage throughout

Pros:

Existing analogue cameras don't need to be

replaced.

Co-ax cable already in place can still be used.

Cons:

Customers with existing analogue systems will

need to buy a new DVR with HD-SDI inputs.



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So what equipment do you need

to install an HD-SDI system?

DVRs

To use any HD-SDI cameras, you will need a DVR with

HD-SDI inputs, as they will not work with an analogue

DVR. You could use an HD-SDI DVR, or a hybrid DVR

offering both HD-SDI and analogue inputs so you can

install HD-SDI cameras alongside analogue cameras.

An HD-SDI DVR on the other hand, which only has

HD-SDI inputs, is better for new installations, or for end

users who want High Definition throughout the

premises.

Cameras

For an experienced CCTV installer, HD-SDI cameras are

not significantly different from analogue cameras. One

of the main differences is that many of them use a

CMOS image sensor rather than a CCD, but in terms of

installation, there is no significant difference.

Monitors

To fully appreciate HD-SDI CCTV, you will need a High

Definition monitor, and these are available in 720P or

1080P definition.

Accessories

One of the few significant differences between

analogue and HD-SDI is the length of cable the signal

can be carried over We recommend that the co-ax

cable between the camera and DVR should not

exceed 100m. It can be extended beyond this by using

a signal repeater. This accessory will give you a further

100m, and in theory there is no limit on how many of

these can be used. It is very important not to use too

long a cable run for HD-SDI equipment. Because the

signal is digital, rather than gradually degrading, the

picture will simply disappear altogether if the cable is

too long.



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HD-SDI, Analogue, or Megapixel IP a comparison

As this table demonstrates, HD-SDI is the best way to get full HD CCTV footage over standard co-ax cable without

any issues of latency or compressed images.

What next?If you want to make the most of the opportunities that HD-SDI offers to you as an installer, a good next step is to get a

demonstration of the equipment at your premises. The Videcon range is all capable of capturing 1080p footage,

and shows HD-SDI CCTV at its best.

Call Videcon today to arrange a demonstration of

our HD-SDI Range or to reserve your place for

HD-SDI Training - 01924 528000

HD-SDI Analogue Megapixel IP

Uses co-ax cable? Yes Yes No

Near-zero latency? Yes Yes No

Guaranteed 100% plug-and-play? Yes Yes No

Comprehensive, global interface standard? Yes Yes No

100% digital technology Uncompressed No Compressed

Delivers full 1080P and 720P video? Uncompressed No Compressed

Compatible with 2 Megapixel cameras? Uncompressed No Compressed


Documents

Free Guide to HD-SDI