RE: EN61000-4-3 Radiated Immnuity Product Monitoring

2003-03-27 Thread richwo...@tycoint.com

Alex, we used a standard camera with a good zoom with remote control,
mounted it to the ceiling in the upper corner of the room behind the antenna
with the wires running out a small hole and covered it in a screened
enclosure. Before we did that we verified that the enclosure did not perturb
the calibrated field. It works great up to 10V/m.

Richard Woods
Sensormatic Electronics
Tyco International



From: Alex McNeil [mailto:alex.mcn...@ingenicofortronic.com]
Sent: Wednesday, March 26, 2003 6:34 AM
To: emc-p...@majordomo.ieee.org
Subject: EN61000-4-3 Radiated Immnuity Product Monitoring



Hi Forum,

I have a EN61000-4-3 compliance test set up in a Chamber. Some of our
products have LCD displays 2cm X 8cm. My problem is I bought a Teseo RF
proofed camera that cannot zoom in on the display at a distance of 2m (from
the corner of the chamber). I can obviously see the display if I place the
camera next to the product. However, it seems that the camera must be
positioned outwith the 1.5Msq calibrated field area?
I heard that there are fibre optic probes that can be positioned at the
display and fed back into the camera lense via an adaptor?
Has anyone heard of this method?
Has anyone any idea of overcoming my problem without the need to purchase a
£5K camera? 
How near am I allowed to place the camera?

Thanks in advance for your kind comments.

Kind Regards
Alex McNeil
Principal Engineer
Tel: +44 (0)131 479 8375
Fax: +44 (0)131 479 8321
email: alex.mcn...@ingenicofortronic.com



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EN61000-4-3 Radiated Immnuity Product Monitoring

2003-03-27 Thread Alex McNeil

Hi Forum,

I have a EN61000-4-3 compliance test set up in a Chamber. Some of our
products have LCD displays 2cm X 8cm. My problem is I bought a Teseo RF
proofed camera that cannot zoom in on the display at a distance of 2m (from
the corner of the chamber). I can obviously see the display if I place the
camera next to the product. However, it seems that the camera must be
positioned outwith the 1.5Msq calibrated field area?
I heard that there are fibre optic probes that can be positioned at the
display and fed back into the camera lense via an adaptor?
Has anyone heard of this method?
Has anyone any idea of overcoming my problem without the need to purchase a
£5K camera? 
How near am I allowed to place the camera?

Thanks in advance for your kind comments.

Kind Regards
Alex McNeil
Principal Engineer
Tel: +44 (0)131 479 8375
Fax: +44 (0)131 479 8321
email: alex.mcn...@ingenicofortronic.com



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Re: EN61000-4-3 Radiated Immnuity Product Monitoring

2003-03-27 Thread lfresea...@aol.com
Hi Alex,

talk to Sensormatic, the are in Florida, but great folks to deal with.

Don Umbdenstock would be the chap.

djumbdenst...@tycoint.com

They have a remarkable camera that can sit in the roof and zoom quite hi.
While I was at his lab, I didn't see it respond to fields up to 10 v/m. The
zoom is remote controlled too.

If you were looking for point of use cameras, I have a fibre optic version
just a bit bigger than a cigarette case for under $2000. The lenses are
C-type, they can be what ever you want.
.
Cheers,

Derek.



Re: EN61000-4-3 Radiated Immnuity Product Monitoring

2003-03-26 Thread John Woodgate

I read in !emc-pstc that Alex McNeil alex.mcn...@ingenicofortronic.com
wrote (in 5685ADDE2285D511925200508BB9F5031EC41C@FORT2) about
'EN61000-4-3 Radiated Immnuity Product Monitoring' on Wed, 26 Mar 2003:

My problem is I bought a Teseo RF
proofed camera that cannot zoom in on the display at a distance of 2m (from
the corner of the chamber). 

Can you get a telephoto adapter for the camera? 
-- 
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk 
Interested in professional sound reinforcement and distribution? Then go to 
http://www.isce.org.uk
PLEASE do NOT copy news posts to me by E-MAIL!


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