Monthly Archives: July 2010

Rugby with a difference, and Rikky’s drunken club passenger test!

I played rugby again today, quite a while after my match with the guys. This time it was with Rikky and a group of girlfriends she plays footie with. It was rainy, very rainy, and muddy. I was teaching them, … Continue reading

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Programming the Optima XM

Programming the Optima is done entirely with the keypad. You can change all aspects of the system, such as user code, entry and exit time, bell on time. There are two programming modes, Engineer Programming mode, and Customer Programming mode. … Continue reading

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What is a microprocessor watchdog on an alarm?

This is a question I get asked by DIY guys. What is a microprocessor watchdog? What exactly does it do? What happens when something is wrong? The watchdog timer is a chip external to the processor. However, it could also … Continue reading

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Setting up a “Barebones Testbed” alarm

I like to test systems before I fit them, especially if the unit has been refurbished by me, as I do circuit repair to all panels. I set up what I call a “barebones testbed”. This involves laying out the … Continue reading

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Alarm Systems Glossary

12 M VOLUMETRIC LENS – Standard lens used on PIRs. Gives full room coverage made up of 24 beams. 20-MINUTE CUT OFF TIMER – Standard timer built into all bell boxes. Used to ensure that bell box stops once it … Continue reading

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