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Everything you need to
1) If you only have one camera a short distance away, consider Direct Drive as the most likely option.
2) Carefully work out the distance to each camera location, and calculate all comparative costs involved, including power supplies.
3) Consider whether any other equipment will need to be remotely controlled, e.g. door locks, lighting etc.
4) Choose the method for relaying the video signals, and then select the appropriate type of telemetry control i.e. Co-ax or data link.
5) Always think about how many cameras (particularly remote control) their are in the system; and allow for possible future expansion.
6) What are the options for larger control systems?, Multichannel telemetry or PC based operation, possibly with Touch Screen.
7) Always make telemetry receiver cards easily accessible for testing and fault location. Make sure they are easy to exchange in situ.
8) If using radio frequency control equipment, make sure their are no unwelcome side effects on other adjacent electronic systems.
9) When designing a control system, don't put all your eggs in one basket; a tiny component failure could compromise the whole system.
10) If adopting a network based system, make sure that adequate safeguards and security lock outs are in place, to prevent unauthorised access and abuse.
Given half a chance, Doktor Jon could probably have gone on ... and on ...and on .... and on about control systems. Lucky escape!!
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