Monitoring Voltage

[Steve Hume]

On 11-Jan-08, at 2:08 PM, Hendrik W. M. van Eeden wrote:

> I probably did not explain myself very well.  The false alarm is  
> always the same, so I am trying to find out if there is something  
> wrong in the panel.  Such that a low voltage, for some reason,  
> confuses the panel and the last alarm condition pops out of the  
> memory stack even though it does not exist at the time.  The  
> monitoring would be only temporary until I could establish the  
> correlation or not.


It could be a good panel and the alarm indicator sending falsely.

To test the panel battery, you could just unplug the AC converter and  
let it run on battery for a while. You could measure the battery  
voltage while it is running on the battery. If it lasts an hour or so  
that should be enough to test the patience of any thieves.

You could short the falsing alarm sensor output (not the power to the  
sensor) That way a false circuit open will not be seen by the panel.  
Then if the panel behaves badly still, then the sensor is less likely  
to be the failure.

What kind of sensor is the false alarm being raised? Door, PIR, tamper  
circuit?

Steve Hume