mike1243 Posted December 6, 2012 Share Posted December 6, 2012 alright lads im a junior at a security firm in gloucester and just wanted to know where i can find some info for theory about links, ive tried googling but end up with a million pages on the samsung galaxy, any help would be appreciated thanks mike Link to comment Share on other sites More sharing options...
PeterJames Posted December 6, 2012 Share Posted December 6, 2012 Hi Mike Welcome to the forum What sort of links are you looking for? Link to comment Share on other sites More sharing options...
mike1243 Posted December 6, 2012 Author Share Posted December 6, 2012 alright mate just a bit of theory behind them , ive got the installer manuals but they only go so far into it, basically just some info on the theory behind latched , the polarity , some diagrams and bits if they do it, ive found that a lot of people i work with only know a bit about it Link to comment Share on other sites More sharing options...
antinode Posted December 6, 2012 Share Posted December 6, 2012 The trade areas of these forums are a great source of info on all things Galaxy, but you'll need to apply for trade status and be able to prove it to get access. The very basics of the links function allows you to control an ouput (or destination as it's called on the Galaxy) from an input (or source in Galaxy speak), hence "linking" an input with an output. The source can be anything from a zone (ie a PIR, door contact, push switch, light sensor etc) to a code to a max reader. The destination is most commonly switching an output but can also be used to trigger or omit a zone or even start a timer. The most common application is to link a zone to an output. When the zone changes state (ie from 1K to 2K, or closed to open) the output also changes state (ie from positive to negative). It's useful for CCTV applications where you want multiple around the site to trigger a number of outputs in one place (ie the DVR or transmitter). It saves on cabling all of the detectors back to the DVR. As for the output modes and polarity, the latch mode means that when the output is activated, it latches on until a valid code is entered into a keypad. This would usually be something like an intruder output. The reflex option means that the output follows the event status (ie the Set output type activates when the system is set and deactivates when the system is unset). The pulse option switches the output on for a preset length of time. The polarity option is to tell the galaxy wether you want the output to be normally at 12 volts switching to 0 volts on activation or normally 0 volts and switching to 12 volts on activation The possibilities are quite wide ranging and I'd recommend you pick up a used G3-48 and keypad and have a play about with it on a test bench. That's the best way to get to grips with them! Trade Member Link to comment Share on other sites More sharing options...
mike1243 Posted December 6, 2012 Author Share Posted December 6, 2012 for your help mate , ill look into the trade posts soon , i got my id badge so shouldnt have a problem getting in , just got to reach 5 posts top man thanks Link to comment Share on other sites More sharing options...
Oxo Posted December 6, 2012 Share Posted December 6, 2012 Hi Link to comment Share on other sites More sharing options...
antinode Posted December 6, 2012 Share Posted December 6, 2012 No problem. It's refreshing to see a relative new comer to the trade showing some enthusiasm and willing to learn, even in their own time. It's a shame this kind of attitude isn't more prevalent in the industry. There are too many "engineers" around simply installing "this-colour-wire-goes-in-this-terminal" with no real idea what they are actually doing or why they are doing it that way! PS, it's not Laser is it? Trade Member Link to comment Share on other sites More sharing options...
mike1243 Posted December 7, 2012 Author Share Posted December 7, 2012 nah allcoopers Link to comment Share on other sites More sharing options...
Rulland Posted December 7, 2012 Share Posted December 7, 2012 Jeez-they start early!. Link to comment Share on other sites More sharing options...
james.wilson Posted December 7, 2012 Share Posted December 7, 2012 Is Stuart still with you? securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
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