Re: RS232/482 Qs

["PatrickLidstone" <patrickl@xxxxxxx>]

--- In ukha_d@y..., "Timothy Morris" <timothy.morris@i...>
wrote:
> No, It's just for the link between the PC and the HA 
controller/Alarm
> system. I need to spec the stuff to go in the walls, I presume a
> standard 4/8 core shielded cable will be more than adequate?

No need for shielded cable (in fact it's probably a bad thing here). 
Standard (multi-core, flexible) alarm cable will be fine. Depending 
on how the interface handshaking is specified, you may need 3 cores 
(3 data + no hardware handshake), 5 cores (3 data + RTS/CTS 
handshake) or possibly 7 cores (3 data+ RTS/CTS and DTR/DSR). From an 
electrical standpoint, cat5 (shudder ;-) would also be fine, but 
being solid core, is less ideal from a mechanical perspective. 

Patrick

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