Cable quality versus image quality

May 2011 Infrastructure

Graham is the project manager for a CCTV systems integration company in Johannesburg. While trying to commission a CCTV system Graham just could not get the cameras into focus. The cameras were all focused on a test monitor at the camera and they all appeared to be in-focus, yet at the recorder the cameras were all out-of-focus. The more puzzling question Graham had was, why were the pan-tilt-zoom (PTZ) cameras out of focus? The PTZ cameras all had auto-focus lenses and no matter what the PTZ cameras were looking at they looked out of focus.

Graham was at his wits’ end. He had replaced the PTZ cameras, then he replaced the digital video recorder (DVR) along with the monitor and still the camera images were out of focus.

Graham then decided to bench test the equipment. He removed the PTZ cameras, a few static cameras, the DVR and the monitor and plugged the systems together at his office on short fly-leads. Surprise, surprise, all the components worked and Graham had an operational system. The cameras, the DVR and the monitor were not at fault.

After much testing and investigating we found that Graham had two challenges with this installation:

1. Graham had used poor quality video baluns.

2. Graham had installed poor quality cable.

The solution to the above challenges was resolved by doing the following:

1. The video baluns were replaced with BFR Digital’s Video CAT products and the video image improved but was still out-of-focus.

2. It was only after the installation was re-cabled that the problem was successfully resolved.

What Graham learnt from this experience can be summed up in one sentence. Even if you use high quality equipment such as BFR Digital’s Video CAT with a leading brand camera and DVR, connecting these components with a poor quality cable will always result in a poor quality video image.

Do IP CCTV systems fail to deliver when poor quality CAT5 or CAT6 is used?

Absolutely! The digital high-speed data stream will experience signal attenuation and crosstalk just like an analogue video signal did on poor quality cable. This always results in reduced data throughput on that particular cable.

Remember, using good quality components installed correctly will produce superb video images every time.

For more information contact BFR Digital, +27 (0)11 786 5575, [email protected], www.bfrdigital.co.za





Share this article:
Share via emailShare via LinkedInPrint this page



Further reading:

Upgrade your PCs to improve security
Information Security Infrastructure
Truly secure technology today must be designed to detect and address unusual activity as it happens, wherever it happens, right down to the BIOS and silicon levels.

Read more...
The hidden cost of cheap networking gear
Duxbury Networking Infrastructure
When it comes to building a network, price is always a consideration, especially in the current economic climate, but there is a difference between smart spending and short-term savings with long-term losses.

Read more...
Open source code can also be open risk
Information Security Infrastructure
Software development has changed significantly over the years, and today, open-source code increasingly forms the foundation of modern applications, with surveys indicating that 60 – 90% of the average application's code base consists of open-source components.

Read more...
Fastest PCIe Gen 5.0 NVMe SSD
Products & Solutions Infrastructure
Sandisk has unveiled the WD_BLACK SN8100 NVMe SSD with PCIe Gen 5.0 technology, an internal SSD delivering speeds up to 14 900 MB/s and capacities up to 4 TB, with 8 TB solutions available soon.

Read more...
Unified storage solution
Products & Solutions Infrastructure
CASA Software has announced the local availability of Nexsan’s upgraded unified storage solution, Unity NV4000, which is ideal for mixed workloads, from virtualisation and video surveillance to secure backup and recovery.

Read more...
Suprema unveils BioStar Air
Suprema neaMetrics News & Events Access Control & Identity Management Infrastructure
Suprema launches BioStar Air, the first cloud-based access control platform designed to natively support biometric authentication and feature true zero-on-premise architecture. BioStar Air simplifies deployment and scales effortlessly to secure SMBs, multi-branch companies, and mixed-use buildings.

Read more...
Back-up securely and restore in seconds
Betatrac Telematic Solutions Editor's Choice Information Security Infrastructure
Betatrac has a solution that enables companies to back-up up to 8 TB of data onto a device and restore it in 30 seconds in an emergency, called Rapid Access Data Recovery (RADR).

Read more...
Advanced surveillance storage from ASBIS
Infrastructure Surveillance Products & Solutions
From a video storage solutions perspective, SkyHawk drives, designed for DVRs and NVRs, offer high capacity, optimised firmware, and a reliability workload rating of hundreds of terabytes per year.

Read more...
Power surges are killing our networks
Duxbury Networking Infrastructure
With power surges and lightning strikes becoming an all-too-familiar threat to South African infrastructure, Duxbury Networking is calling on local installers and network integrators to follow proper grounding protocols.

Read more...
A passport to offline backups
SMART Security Solutions Technews Publishing Editor's Choice Infrastructure Smart Home Automation
SMART Security Solutions tested a 6 TB WD My Passport and found it is much more than simply another portable hard drive when considering the free security software the company includes with the device.

Read more...










While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd. | All Rights Reserved.