Welcome to the
"Technical Section"
Doktor Jons

Guide to Closed Circuit TV (CCTV)

So would you like to play "Spot the CCTV Camera?". Eagle eyed visitors may recognise the profusion of street furniture, surrounding a single heritage dome camera keeping watch over part  of Londons' prestigious Oxford Street shopping area.

CCTV cameras on the move


The choice of control system may well depend on what type of unit is being used, and precisely where it is located.

For any internal remote control devices being used over distances of less than fifty metres, it may well be cheaper
and more appropriate to use a ‘Direct Drive’ control unit, which can supply all the appropriate driving voltages straight down a multi core cable.

The Relay Interface technique for remote switching using low voltage control signals, is now hardly ever used, but there may well be the odd occasion where this type of approach could be considered.

For external remote control camera systems, and in fact any situation where greater distances are involved, Digital Telemetry is now accepted as the norm.

Be aware though that if you intend to use preset positioning, or automatic tours, you have to select a Transmitter that can control those functions, and also a Receiver Card which is specifically designed to drive a low voltage variable speed head.

In all cases, you should follow the manufacturers specific guidelines on cable and power requirements. You can also find more details on all the various options in the Technical Section - Control Systems pages


Top Ten Tips on using Pan and Tilt Heads>

The unique "TRUSTED" National CCTV Improvement Campaign

IMPORTANT: No material may be reproduced, copied or redistributed from this site,
without the express written consent of doktorjon.co.uk

All the detailed information on this site is provided in good faith; and as such, Doktor Jon
does not accept responsibility for any consequential loss, injury or disadvantage
resulting from any individual or organisation acting on the details contained herein.

© doktorjon.co.uk 2004 - 2008

Homepage...:...Gateway...:...Technical Gateway....:....Quickfind Index....:....Equipment Directory
Site Index...:...About this site....:....CCTV Helpdesk....:.... The Forum ....:....Contact Doktor Jon