Hi all

This is my first post and probably the most stupid but the title really says it all. I have started an apprentiship and have done a lot of fitting of resistors in a variety of panels Scantronic, Galaxy, Texecom etc but have never got how the EOL resistors work and what the panel should see when the zone is closed/open. Any info or diagrams would be greatly appreicated as this sounds really embarrasing as I should know this stuff.

start with galaxy 2x 1k resistors one across the zone and zone end of line

open = 2k ( panel see`s the resistor across zone and the eol )

closed = 1k ( panel see`s the eol )

tamper S/C 0k short on cable

hi res / lo res panel see`s under say 900 ohm or over 1500 ohm

scantronic 2k2 4k7 as above

now telecom just have an end of line

gotcha its all so simple now

Dont understand how I did not know that before

Thanks

Dan

P.S Is it the same for the 4k7 and 2k2 that in tamper it sees 0k?

Yes, just looking for different values.

Yes, just looking for different values.

41994[/snapback]

err.. why do i have a feeling that 0ohm is zone fault and indefinite is tamper??

(DSC, Guardall, Gardtec, HHL, Esmi)

Hi all

This is my first post and probably the most stupid but the title really says it all. I have started an apprentiship and have done a lot of fitting of resistors in a variety of panels Scantronic, Galaxy, Texecom etc but have never got how the EOL resistors work and what the panel should see when the zone is closed/open. Any info or diagrams would be greatly appreicated as this sounds really embarrasing as I should know this stuff.

41987[/snapback]

Dan

Not being funny mate but why don't you ask your line manager (or at least one of the other lads)??

If you're doing an apprenticeship then it's your companies responsibility to ensure that you understand how the systems you are installing work.

If there are reasons why you can't ask internally then i'm glad you managed to find out through this site anyway.

Dan

Not being funny mate but why don't you ask your line manager (or at least one of the other lads)??

Maybee he has tried and they are playing the old knowledge is power trick on him ?

If you're doing an apprenticeship then it's your companies responsibility to ensure that you understand how the systems you are installing work.

I agree or maybee his company does not want him to get to clever and leave

Anyway I will give you something to chew over Many moons ago when I worked for Thorn(spit) I worked on a 2 wire eol resistor and diodes sytem (9000_

So any ideas how this system worked and was fully copliant with 4737.

Treat this as the Saturday teasr

why don't you ask your line manager....

Maybee he has tried and they are playing the old knowledge is power trick on him ?

42558[/snapback]

They might not know.

hi dan, there is a fantastic book available which will help you with your apprenticeship. Its called "intruder alarms" surprise surprise! author is gerard honey, and the isbn no is: 0-7506-5760-x .

This is an excellent book with nice diagrams. Get it off www.amazon.co.uk

Dan

Don't be embarrassed mate - well done for having the guts to stand up and say "I don't quite understand why I'm doing this".

If you immediate boss either doesn't know how to do end of line or does but doesn't want to share the knowledge then you should seriously think about whether you want to stay with that company any longer.

Anyway, I hope you now understand how end of line works.

Ronnie