arfur mo Posted June 3, 2013 Posted June 3, 2013 i have a different slant in masking, the idea is to warn the user a detector cannot cover the area it was put there for, now that might happen as a pre-curser to an intrusion, but also take a shop, stock gets placed in front of it because lets face it that's what shelves are for, eventually that tick gets higher completely blocking the detectors field. in a home not unusual to have a detector by the windows, a day comes and new curtains arrive. Night time, close them and cover the detector defeating it. as your building your alarm, i suggest just instal one zone on the bench, program others as not used. test out the various options for yourself as experience often lessens confusion. a good tip is note the voltage at the zone terminals for each condition, i.e. you might get 5v with nothing in them = open circuit, results in tamper condition - look at lid contacts. cables, now ditto for detector both in alarm and ready moving onto mask and fault. by knowing these values makes it easier so speeds up fault finding. tbh it's not that complicated unless you think it is, just follow the diagrams given, making good sound connections. the problems come in diagnosing a fault, a big part of our black art - so you don't add to them . If you think education is difficult, try being stupid!!!!
james.wilson Posted June 3, 2013 Posted June 3, 2013 i have a different slant in masking, the idea is to warn the user a detector cannot cover the area it was put there for, now that might happen as a pre-curser to an intrusion, but also take a shop, stock gets placed in front of it because lets face it that's what shelves are for, eventually that tick gets higher completely blocking the detectors field. Range reduction and mask detection are 2 completely different things though, just a heads up securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount.
norman Posted June 3, 2013 Posted June 3, 2013 Lol Nothing is foolproof to a sufficiently talented fool.
datadiffusion Posted June 3, 2013 Posted June 3, 2013 Your actual Range Reduction (as opposed to Masking) is a Grade 4 mandatory thing isn't it? Quintuple EOL here we come! So, I've decided to take my work back underground.... to stop it falling into the wrong hands
james.wilson Posted June 3, 2013 Posted June 3, 2013 Yeah Grade 4 securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount.
arfur mo Posted June 6, 2013 Posted June 6, 2013 Yeah Grade 4 Do you think many houses that would require a G4 sydtems would have the DIY ownerr asking questions how to in here? If you think education is difficult, try being stupid!!!!
james.wilson Posted June 6, 2013 Posted June 6, 2013 No reason why a grade 4 system couldn't be DIY but I doubt anyone would securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount.
Oxo Posted June 6, 2013 Posted June 6, 2013 Do you think many houses that would require a G4 sydtems would have the DIY ownerr asking questions how to in here? But one was asked and you got mixed up.
arfur mo Posted June 7, 2013 Posted June 7, 2013 I've read the thread over, and i'm now confused to know where i'm accused of being confused? (Jut writing that confused me ). An example of Grade 4 was mentioned an example for the requirement of different complexities or resistor combinations available, nobody directly asked about grade 4, just commented on its requirements. Anyway, for the obviously curios o/p, it's about progress and compatibility with both latency and modern equipment, to get the full 'benefit' of Grade 4 you need every device, control unit and system designed to be to that standard. wiring and detection by comparison was at one time very simple, and many DIY installers still use for that reason. Trade wise, progress made over the years, starting from battery kit, better cable supervision against sabotage and also detecting damage as it happens. When early Double Pole was used there was no 24 cable supervision, so shops as example would only know at closing the window cleaner broke the window foil and then had to wait for service. Inevitable after 17:30 or later when most service departments have only one or 2 engineers on duty, so likely a very long wait to be had. Nothing wrong in using these higher security devices in high security mode, it's if you have problems it might be tricky to diagnose them technically for the novice. As an observation, with battery operated wireless detection becoming more reliable, seems a bit of a full circle in one part of one the technology . If you think education is difficult, try being stupid!!!!
fozzies Posted June 7, 2013 Posted June 7, 2013 I'd say that g4, not that ive ever worked with it, would be a.tough challenge. At g3 the siting of detectors, especially contacts, is a lesson learnt the hard way, no matter how much attention you pay to the instructions.especially as the specifics for a similar contact vary from manufacturer to manufacturer. I imagine g4 to be a real pita
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