shock sensor adjustment
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=111526
Printed Date: April 24, 2024 at 6:54 PM
Topic: shock sensor adjustment
Posted By: arhunter
Subject: shock sensor adjustment
Date Posted: February 12, 2009 at 7:02 AM
Anyone have any special methods for adjusting sensitivity on the shock sensor?
Replies:
Posted By: thepencil
Date Posted: February 12, 2009 at 9:25 AM
Just remember your bed time story “Never Cried Wolf” when you are adjusting the sensitivity on your shock sensor. If your alarm keeps going off for no apparent reason, people will eventually ignore it. You want to adjusted so that it’s not too sensitivity that a cat jumping on your car will set it off. Find a good balance so that when the alarm goes off it’s for real. Having your alarm going off in the middle of the night and waking your neighbor is not exactly a great alarm install. ------------- Be careful whose advice you buy, but be patient with those who supply it. 
Posted By: arhunter
Date Posted: February 12, 2009 at 6:35 PM
The leds on the shock sensor seem to work okay while adjusting the sensitivity but can't get it to trigger the alarm? The alarm is an Excalibur AL-2000-EDP, shock sensor is Omega AU-84tn.
Posted By: i am an idiot
Date Posted: February 12, 2009 at 7:47 PM
Does the shock sensor plug into the brain? Or did you have to wire it to the negative trigger wire? If the latter, try grounding the negative trigger wire directly to ground to make sure the alarm is working properly.
Posted By: arhunter
Date Posted: February 12, 2009 at 8:54 PM
I got it working now. I guess I can't read. I had the alarm bypass turned on in the programming, so I guess it was working correctly! Thanks
Posted By: Chris Luongo
Date Posted: February 12, 2009 at 9:21 PM
You couldn't really do this on a customer's car, but if it's your own personal car....
You could just turn it up a tiny little bit every night, a little bit more each time, and then the first night it falses, back it down a bit.
Posted By: nthach
Date Posted: February 13, 2009 at 11:30 PM
The Carbine 5850 I'm using in my car has a shock sensor adjustment mode which is accessed via valet switch which will give off soft or loud chirps depending on how hard you hit a certain area. That gave me an idea of how to adjust the sensor.
Posted By: arhunter
Date Posted: February 14, 2009 at 5:09 AM
nthach wrote:
The Carbine 5850 I'm using in my car has a shock sensor adjustment mode which is accessed via valet switch which will give off soft or loud chirps depending on how hard you hit a certain area. That gave me an idea of how to adjust the sensor.
That sounds like a handy feature. The shock sensor I was trying to adjust has 2 leds, one for prewarn and one for hard trigger. I inadvertanly had the alarm function bypassed and was able to adjust the sensor just looking at the leds without listening to the siren. I think I got it about right, a small tap sets off the prewarn, a kick to the step bar will set off the hard trigger.
Posted By: number2
Date Posted: July 06, 2009 at 10:27 AM
I have a alarm that came with the AU-84tn shock sensor also. With the sensitivity turned way lo I would still get false triggers. So I swapped it out with a 504D Stinger Double Guard and it made a big difference. I took apart the AU-84tn and all it is is a piezo disc with a spring soldered onto it.
Posted By: richl68
Date Posted: July 06, 2009 at 10:34 AM
You know whats fun trying to set a motion sensor in a convertable...ugh i hate those! lol
Posted By: jcs091570
Date Posted: July 22, 2009 at 4:01 AM
My theory on shock sensors is that if you have to set them high on sensitivty, they are not properly located to pick up vibrations from any impact to your vehicle. I have two 504Ds installed in my car..one behind the front dash velcroed to a air duct which picks up front impacts, and another towards the rear of the vehicle in a backseat center console, velcroed to a plastic panel inside of that piece. My sensitivity is set at mid level. You can also try mounting to wire harnesses..zip tie them works good. Generally lightly banging on the bumpers or doors, frame.. triggers the warn away.. and of course a harder hit triggers full alarm.
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