System Sensor/DSC problem

[R.H.Campbell]

Sometimes when wierd things happen like that on a panel, where the siren
seems to be "squealing" at a low voluem continuously, the noise can be muted
by putting a 1K Ohm resistor across the siren output leads....

Worth a try !

RHC

I am using a SS Mini-alert sounder PA400 series as an inside siren for a
DSC 5010. When I hook it up, it emits a high tone pitch while not in
alarm. I have used this same siren with a DSC 155mx and have had no
trouble. This is the second panel that it has happend on. Could anybody
help me?

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[Jimmy Dale Reeves]

I am using a SS Mini-alert sounder PA400 series as an inside siren for a DSC
5010. When I hook it up, it emits a high tone pitch while not in alarm. I
have used this same siren with a DSC 155mx and have had no trouble. This is
the second panel that it has happend on. Could anybody help me?

 

[Robert L Bass]

The panel maintains a low voltage output across the alarm output
terminals in order to supervise the wiring to the siren. Install
a 1000 Ohm resistor across the terminals to sink the voltage and
the siren will remain quiet until an alarm is triggered.

--

Regards,
Robert L Bass

Bass Burglar Alarms
The Online DIY Store
http://www.BassBurglarAlarms.com

 

[Frank Olson]

Sometimes when wierd things happen like that on a panel, where the siren
seems to be "squealing" at a low voluem continuously, the noise can be muted
by putting a 1K Ohm resistor across the siren output leads....

Worth a try !

I'll add one little thing. If you want to supervise the wiring to the
siren, put the 1000 ohm resistor across the leads *at the siren* (and
not at the panel).

 

[R.H.Campbell]

Frank, the panels I use (DSC and Paradox) supervise the siren loop as a
normal course of action. I'm curious, how does adding the resistor assist
matters (other than for the example problem being discussed....)

RHC

I'll add one little thing. If you want to supervise the wiring to the
siren, put the 1000 ohm resistor across the leads *at the siren* (and not
at the panel).

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http://www.polesoft.com/refer.html

 

[Frank Olson]

Frank, the panels I use (DSC and Paradox) supervise the siren loop as a
normal course of action. I'm curious, how does adding the resistor assist
matters (other than for the example problem being discussed....)

In this particular example, the OP wants to kill the sound coming from
the siren (caused by the supervisory voltage across the leads). You
mentioned adding the 1000 ohm resistor across the siren output. If you
do that at the panel, you're losing supervision of the siren. If you
put the resistor *at the siren*, you maintain supervision of the wire
between the panel and the siren.

 

[R.H.Campbell]

Ok, thanks...would seem to make sense....

RHC

In this particular example, the OP wants to kill the sound coming from the
siren (caused by the supervisory voltage across the leads). You mentioned
adding the 1000 ohm resistor across the siren output. If you do that at
the panel, you're losing supervision of the siren. If you put the
resistor *at the siren*, you maintain supervision of the wire between the
panel and the siren.

I choose Polesoft Lockspam to fight spam, and you?
http://www.polesoft.com/refer.html