Frequently asked questions

Resolution in a CCTV System is usually measured in terms of TV Lines and normally only horizontal TV Lines is specified. Resolution refers to how much detail can be captured by the camera and displayed on a monitor. For normal purpose there are cameras which start with 380 horizontal lines then moving towards higher Resolution of camera which have resolution of 470 TV Lines or 550 TV Lines. 

Co-axial cables are generally used for CCTV Video transmissions. Any cable which has two conductors which share a single common axis is a co-axial cable - a center conductor, accompanied by a shield, the two being kept apart by dielectric and wrapped in an outer jacket. Generally various co-axial cables types are specified in terms of RG nos. i.e. various types of cables available are RG-6, RG-11, RG-59 type. For Video transmission we use RG-6, RG-11, RG-59 type cables which have 75 ohm impedance. RG-59 is the smallest type cable, RG-6 is medium and RG-11 is the largest. RG-59 is used for short distances, RG-6 for medium & RG-11 for long distance. Thereby adjusting for video loss in long distances. Fiber-Optic Cable is not affected by electrical interference and has no problem even in contact with high-voltage power. It transmits video signals with extremely high efficiency and can run up to miles. The problem is that it is expensive and difficult to handle.

A video surveillance camera require a certain amount of light so that it can be produce a usable video signal in those light condition. The intensity of light is measured in terms of LUX (Lumens per Square Meter). One LUX is a candle light volume at one-meter distance. To gange the sensitivity of a Camera we have to find what level of light is needed to produce a video signal. Therefore lower the LUX rating higher is the sensitivity. Followings are some examples of natural lights expressed in LUX.

Full daylight; 10,000 LUX.
Very dark day: 100 LUX
Twilight: 10 LUX
Street light: 5 LUX
Full moon: 0.1 LUX
Quarter moon; 0.01 LUX

12VDC Most board cameras, mini cameras and about one third of the professional cameras work with 12VDC, 100mA to 200mA for B/W cameras and 150mA to 300mA for color ones. These cameras usually have DC jacks to accept DC power plugs. You should be careful about the polarity (positive and negative) for this power source. 12VDC power can be supplied by AC Adapter or battery pack. 

A CCD (charge coupled device) consists of several hundred thousand individual picture elements (pixels) on a tiny 1/2", 1/3", or 1/4" chip. Each pixel responds to light falling on it by storing a tiny charge of electricity. The pixels are arranged on a precise grid, with vertical and horizontal transfer registers carrying the signals to the camera's video processing circuitry. This transfer of signals occurs sixty times per second. The 1/3" CCD chip is the most widely used sensor format these days; its size is 5.5mm (diagonal), 4.4mm (horizontal) and 3.3mm (vertical). The 1/4" sensor format, recently being used in color cameras, is 4mm (diagonal), 3.2mm (horizontal) and 2.4mm (vertical). The CCD chip's Electronic Shutter plays a major role in making a fantastic and reliable picture. * A C-MOS (Complementary - Metal Oxide Semiconductor) chip, also a video image sensor, produces much lower quality picture than CCD chip. 

IP, Internet Protocol, Address works as a website address on the Internet. When it is assigned to a Web Camera, you can open its video page with any web browser such as Microsoft Internet Explorer or Netscape by typing in the IP numbers. (Sample of an IP address: 65.104.93.35 - If you type these numbers in the "Address" box of any web browser, you will see a live video from web camera.)

Public IP Address is for the Internet like the above mentioned sample numbers. It's like a public phone number that you can call from any phones connected to the telephone service. Private IP Address, like an EPABX extension   numbers inside an organization, works only within a limited area such as LAN or WAN system. If you assign a private IP address to a Web Camera/ DVR, you can see it in the LAN or WAN system, but not on the Internet. It is a Public IP Address that works on the Internet. There are two types in Public IP Address; Static and Dynamic.

Static IP Address, like above-mentioned sample numbers, is an independent address that you can own yourself. Dynamic IP Address, or Floating IP Address is not an independent address and you have to share it with other subscribers. This also works on the Internet, but unlike Static IP Address, the address changes every time you log in. When you want to open the camera assigned with a Dynamic IP Address, you should go to the web site of the web camera's manufacturer where they have a list of all the web camera users who have Dynamic IP Address. Though it works, Dynamic address is not as convenient as Static IP Address. So, you'd better get a Static IP Address when you install a IP camera/ DVR. This address is provided by your Internet service provider in your area viz. MTNL, BSNL, Reliance etc at a nominal yearly charges. 

Since all the latest Standalone DVRs have TCP/IP port in built they can be installed on a local LAN Network or a WAN and can be monitored by the administrator remotely from a PC connected on that network. The Remote PC has a DVR client software installed which allows the administrator to manage the DVR System including checking the system status, searching in the recorded data, changing the user setting etc. The same function can be done remotely through an internet browser such as Microsoft Internet Explorer. The DVR is connected to the internet via a high speed broadband and given a Static IP address.

A PC-based digital video recorder is basically a personal computer that has been modified with hardware and software to work as a DVR. An Standalone digital video recorder is a machine that has been manufactured specifically to work as a DVR. In Standalone DVRs there is typically one circuit board with software burned into the chip.  There used to be significant differences in features between the PC-based and the Standalone machines. But with recent advancements in the Standalone DVR technologies the differences are becoming less. The advantages of an Standalone digital video recorder is that they are extremely stable and reliable since they contain fewer parts. The software is often written in basic machine code or Linux code which tends to be more stable than Windows software. The advantages of the PC-based digital video recorders is that they are easier to interact with because you use the on-screen menus and a mouse (as opposed to Standalone which you interact with more like a VCR - via buttons).  Using PC based DVR cards the Desktop PC has to be kept on continuously, and if the LAN port of the PC is used for remote monitoring the risk of Virus infection in the PC increases.

There are several factors that are critical to consider when purchasing a DVR, especially when comparing price. The most important factors are as follows:- Frames Per Seconds (FPS) :- This relates to how many pictures the DVR will record in a second. Real time recording is about 25 FPS on each Camera. Compression technology used for storing data;H.264 is the latest technology at present. Other technology hugged used are MPEG4, MJPEG, Wavlet etc. DVR is having TCP/IP Network connection for remote viewing capability. Whether the DVR supports simplex / triplex / pentaplex operations. Other features like motion detection, scheduling, audio port supported, USB port availability, back-up facility available, multilevel password protection etc. Number of hard disk drives and maximum capacity of Hard Disk supported.

All DVR's record to a Hard Disc.  Each frame of video has a specific size (from 0.5Kb to 5KB for PC-Based DVR’s and from 10kb to 15Kb for Stand Alone DVRs are typical) one second of video can be made from one digital picture (1fps) to 30 digital pictures (30fps) The video we see on TV’s is 30fps so how long you can record for depends on how your settings are set on the DVR.  Typically in security applications we look for 4fps to see things like people walking down hallways in and out offices or rooms.  We use 7.5fps for better streaming video.  This might be for watching people hand movements, cash draws or faster moving objects like capturing cars license plates.  15fps per camera is for "Live like video recording” almost perfect video streaming.  And at the top of streaming video list is 30fps which is live streaming video, like a TV Program.  Customers who demand the absolute best chose these DVRs. We sell many of these DVRs to Police stations, the Military, Government Building, institutions. Here is an example of how long you can record Example: recording at 4fps on a system with an image size of 12kb would be 12kb*4=48k per second. if you have four cameras  then 48k *4=192k per second.  One hour would use this much space 192kb *60(minute)*60(hour) = 691200kb (per hour) or 0.69 GB so if you have a 80 GB hard disk 80/0.69 =115.94 hours = 4.8 days. 

Traditional analog surveillance technology (often referred to as Closed Circuit Television or Simply CCTV) has now been around for over 20 years. Despite obvious deficiencies the functionality and price point for this basic technology has proven attractive and popular for use within security and industrial markets. However with the recent introduction of IP Surveillance technology these industries and others can imminently expect to experience the benefits of a technical revolution. IP is the abbreviation for Internet protocol, the most widely used protocol for communication over computer networks and the internet. With 90 percent of today’s networks now IP enabled, IP Surveillance technology is founded on a well proven yet future communication technology. It creates digitalized video streams that are transferred via computer networks, enables remote monitoring as far away as the network reaches and enables viewing / monitoring from any remote location over the internet. Its scalability makes it attractive not only for enhancing or revitalizing existing surveillance and remote monitoring applications, but makes it enticing for a vast number of new applications as well

Traditional analog surveillance technology (often referred to as Closed Circuit Television or Simply CCTV) has now been around for over 20 years. Despite obvious deficiencies the functionality and price point for this basic technology has proven attractive and popular for use within security and industrial markets. However with the recent introduction of IP Surveillance technology these industries and others can imminently expect to experience the benefits of a technical revolution. IP is the abbreviation for Internet protocol, the most widely used protocol for communication over computer networks and the internet. With 90 percent of today’s networks now IP enabled, IP Surveillance technology is founded on a well proven yet future communication technology. It creates digitalized video streams that are transferred via computer networks, enables remote monitoring as far away as the network reaches and enables viewing / monitoring from any remote location over the internet. Its scalability makes it attractive not only for enhancing or revitalizing existing surveillance and remote monitoring applications, but makes it enticing for a vast number of new applications as well

We repair almost all Branded and assembled Desktops , Laptops, All-in-one-PCs. and Printers.

Just Call / SMS/ mail into Vsecure7 service centre online support. Within 24 hrs our technician visit your place at a nominal fee. He diagnoses the problem and almost fixes the same onsite. If it is hardware issue requires further diagnoses will carry the same to the base unit (service centre) for repairs and replacement. Within 2 days u are updated about the repairs or replacement., any further extensions you can call us on 022 26123298 / 022 26683298

Payments can be made by cash / cheque when our engineer visits for service.

If for some reason we are unable to repair your product, we will refund your repair charge in full.

We can repair almost all Desktops , Laptops, All-in-one-PCs. and Printers. of any age, but sometimes this is not the case if we cannot obtain replacement parts.

We work with the India’s largest parts supplier to make sure we can fix your product quickly. Most spares take 24-48 hours to arrive to us, subject to stock levels and order times. We will contact you to notify delays if any.

Repairs are available 7 days a week, for most parts of Mumbai ,Vashi and Thane.

Yes, we provide 7 days warranty on all our repairs if it isn't physically damaged within those 7 days.

Yes! We can usually fix any desktop ,laptop, printers etc.

Yes. We automatically carry complete checking of your Desktops , Laptops, All-in-one-PCs. and Printers and will keep you updated for any other faults found before going for the repair.

• Always lower the screen with two hands. Sometimes the screen will over flex when using one hand, causing the screen to crack.
• Never shut the lid of your laptop with a pen or pencil resting inside the laptop.
• Do not poke the screen with your finger or a sharp instrument like a pen or pencil.
• Always close the laptop lid safely and carefully when not using the laptop.
• Never have food and drink near your laptop, regardless of whether you are working on laptop on or not.
• Never place books or other heavy items on the closed lid of a laptop. The pressure will crack the laptop screen.
• If the hinges of a laptop are cracked or damaged, seek a laptop repair immediately, otherwise the screen could also become damaged.
• If the lid of a laptop is damaged, seek a replacement or the screen could also become damaged over time.
• If you think your screen has failed, try plugging the laptop in to a VGA / HD monitor using the correct cable type. This will help you diagnose if the screen is faulty. If both the monitor and screen show no signs of output, it potentially could be a laptop motherboard repair required.
• Do not attempt to clean the laptop screen when it is on.
• Always use a damp lint free cloth to clean your laptop screen.
• Glass cleaning products are excellent but do not use excess amounts as the grease smear effect will be evident.