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what's wrong here?
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| Gesualdo |
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Posts: 224
Joined: 09 Jun 2005
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Posted: Tue May 27, 2008 3:18 pm
Post subject: what's wrong here?
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What's wrong here?
When I replaced my front camera I moved the existing ex40mnx camera with an 8mm lens and 940nm filter from the front of the house to the side to cover a walkway to the back. it actually is in a more restricted area than before, it is now 12 ft up and on the side of the house, above the gate pointed at a brick sidewalk that is picked up 5ft in front of the camera at the bottom of the picture to maybe 20ft max at the top of the picture. there is biege siding on the left, with a 10 foot tall juniper bush 20 ft in front of camera between the house and the sidewalk, the base is just out of the picture area , a narrow strip of grass and then a driveway to the right (also not in picture). there is a street light 30 ft beyond the viewing area. It does switch to b&w but fades to nothing and all snow as the sun sets.
The problem is, when I walk right up to the camera waving my arms you can barely see me. I went out with a flashlight and it pick up great and can see clearly. turn aff the light and al snow. with that much to bounce off of it should see a person at 5 ft shouldn't it? They should be overpowered. What's wrong? IR not working?
I would post pictures but the picture didn't go to the usb drive properly so onl have a day image, maybe tomorrow
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| Gesualdo |
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Posts: 224
Joined: 09 Jun 2005
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Posted: Tue May 27, 2008 8:13 pm
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| kensplace |
Moderator
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Posts: 920
Joined: 30 May 2006
Location: UK
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Posted: Wed May 28, 2008 3:41 am
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Not familiar with that camera, but maybe you could see if the IR is reflected in a mirror? It sounds like the IR is not on, if you cant see anymore in the dark with that camera..
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| Gesualdo |
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Posts: 224
Joined: 09 Jun 2005
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Posted: Wed May 28, 2008 11:46 am
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Thanks for response and the idea. I will do that and if neccessary I will take it down and bench test it again. there is, I believe, an adjustment screw for the level of ir. It's for that or the sensor, can't remember which. I will have to check the manual.
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| zmxtech |
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Posts: 285
Joined: 09 May 2007
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Posted: Wed May 28, 2008 5:58 pm
Post subject: ex40
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If the IR cut filter is working [it goes b&w] then and you are getting a dark picture the IR lEDs might not be on. I have fixed a few ex40 domes and the LEDs tend to burn out.
hold up you phone camera etc to check they are on
z
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| Gesualdo |
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Posts: 224
Joined: 09 Jun 2005
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Posted: Wed May 28, 2008 6:05 pm
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well tried to post video and can't find a place that can host the type of file  
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| Gesualdo |
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Posts: 224
Joined: 09 Jun 2005
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Posted: Wed May 28, 2008 6:06 pm
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| zmxtech |
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Posts: 285
Joined: 09 May 2007
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Posted: Wed May 28, 2008 6:23 pm
Post subject: ir
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you should see a dull glow of the LEDs [thru your camera] as 900nm+ cant be seen by us.
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| Gesualdo |
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Posts: 224
Joined: 09 Jun 2005
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Posted: Wed May 28, 2008 7:24 pm
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will try it when it kicks over to b&w about 15 min or so
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| Gesualdo |
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Posts: 224
Joined: 09 Jun 2005
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Posted: Wed May 28, 2008 8:50 pm
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well... I think there was a real faint glow and the mirror did brighten the picture almost perceptably so they are working but it does not appear to be very much.
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| Gesualdo |
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Posts: 224
Joined: 09 Jun 2005
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Posted: Thu May 29, 2008 8:34 am
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Ok, let me think out loud here for a moment... Correct me if I'm wrong, PLEASE!!!
I am going to switch power supplies and see if it is a power problem. but i want to clearify control settings and functions. The led array is set at the factory and can not be changed. Correct? PG16 of manual.
http://www.extremecctv.com/product_detail.php?product_id=197
The blue phillips screw is going to adjust the photocell brightness and will only adjust the time the the photocell tells the camera to switch from day to night. Correct? Pgs. 16, & 8 of manual
Therefore it has no effect on the level of IR produced.
Thanks,
Gesualdo
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| rory |
Moderator & Founding Member
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Posts: 14310
Joined: 10 Nov 2003
Location: Bahamas
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Posted: Fri May 30, 2008 10:48 pm
Post subject:
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if you haven't made any adjustments and its less IR than before and in a smaller area, maybe a power issue.
Also make sure no wires came loose in the move of the camera. Check all connectors inside the camera as well, make sure they are attached properly.
According to Figure 2.2 on Page 8 that is the adjustment for the IR brightness, the amount of power than is sent to the IRs.
_________________
BahamasSecurity.com - Bahamas Real Estate - Bahamas Yellow Pages
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| Gesualdo |
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Posts: 224
Joined: 09 Jun 2005
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Posted: Sat May 31, 2008 12:15 pm
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Thanks for correcting me. that was my first thought, then reread it and second guessed myself into a wrong assumption. I will check connetions and adjustments when it stops raining.
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| Gesualdo |
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Posts: 224
Joined: 09 Jun 2005
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Posted: Sun Jun 01, 2008 8:32 pm
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| Gesualdo |
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Posts: 224
Joined: 09 Jun 2005
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Posted: Mon Jun 02, 2008 8:13 pm
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 old location view
 new view daytime
 new location changeover
 image gradually goes to this -full dark
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