gmcintu...@packetengines.com writes:
Rick,
snip
But they can also be reduced to such a small power output, 50
mW that they should not be harmful.
Gary,
For the most part your comments are relatively accurate. Some comments
added:
1. Laser safety is covered in 21 CFR 1040.10 for the US.
Indeed.
The lower 5mW lasers used in some optical transport
systems may seem low. BUT, the beam is concentrated
into an area only a few mm^2 before it manages to get
dispersed. That's an amazing amount of energy for
eye tissue to receive.
A laser rated somewhere just above 20mW can
I missed one (a few) points here in the discussion about laser pointers.
The potential harm a laser beam can cause is not only related to power and
color, but also the
the quality of the focussing optics. A small (in diameter) beam ( f.i 10
micron) can cause serious harm to tissue
including eye
Chaps,
Before we go banning laser pointers because of a
potential
fatality sometime, lets get rid of all the guns, stop drinking alcohol,
and
wear our seat belts!
At this rate we will be suing the milk companies because milk contains
FAT,
FAT causes heart problems that lead to
# From: Rick Cooper rcoo...@metlabs.com
# Subject: RE: Laser pointers
# Date: Wed, 11 Nov 1998 09:43:19 -0500
# To: 'emc-p...@majordomo.ieee.org' emc-p...@majordomo.ieee.org
#
#
# All,
#
# The seaside resort town of Ocean City, Maryland passed
# an emergency
Greetings Joe,
I think that you need to look at the consumer of your equipment. If the test
equipment is to be used by an average person, then I believe multiple
languages are required. If you sell a specialized piece of test equipment,
then I believe the standard offers a different solution.
Why were you giving shrimp to your boss?
-Original Message-
From: Richard A. Schumacher
[mailto:schum...@valencia.rsn.hp.com]
Sent: Wednesday, November 11, 1998 12:31 PM
To: lfresea...@aol.com
Cc:
Greetings Bob,
I do not see much reference to this situation under EN 61010. I believe that
at some point in time, the customer has to take some responsibility for the
process that they use. But the manufacture of the piece of Test equipment
still has some duty to warn of any foreseen hazards.
A1. Since concrete is partly conductive and varies with mositure content and
ambient conditions, the reflected path with vary substantially. The solution
is to place a screen mesh over the top of the concrete.
A2. The specified size is that of the elipse which is 2d by root3d. A
practical size is
Gary,
as a vegitarian(?), I don't know why anyone would eat shrimp... However, it
came on a Pizza during a company event.
Derek.
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Antonio,
I'm not sure what the implication of your message was, but I NEVER drink
Alcohol, and I ALWAYS wear a seat belt.
As a father of 2 little girls, safety is my number one concern in the world.
Alas, laser pointers are less of a threat that the other things on the
previous list.
As an X
OK,
perhaps the comparison to foods strayed from the context a little, a sign of
the sue happy world we live in...
However, what about power tools, you could inflict harm with a paper knife for
goodness sake. Anyone remember all the fuss when superglue came out?
The point is that for a few
Hi Richard,
Would you please explain in detail what you said Raising your ground plane
above ground level is not recommended as it tends to create ground
discontinuities at the edge of the plane. in the 2nd paragraph of your
following article. To my limited knowledge, people don't have problem
This caught my eye. In particular the Ray's comments that English is a
common language. For ITE equipment there exists a paragraph (don't have the
standard handy right now) that does say common language but their is an
amendment AZ (I think) that specifies German.
I'm heading out of town and can
Hans, you raised a very good point that needs to be discussed - the need for
ferrites on the antenna cable. I have read articles indicating that adding
the ferrites when taking NSA measurements was the only way they could make
their site compliant. But I have also heard that the reason the
Enough already!
-Original Message-
From: lfresea...@aol.com lfresea...@aol.com
To: antonio.saro...@fer.hr antonio.saro...@fer.hr;
emc-p...@majordomo.ieee.org emc-p...@majordomo.ieee.org
List-Post: emc-pstc@listserv.ieee.org
Date: Thursday, November 12, 1998 1:27 PM
Subject: Re: Laser
I have no personal experience with raised sites, but I do know of folks that
skimped on the size of their ground planes when they were on the surface,
and they could not pass. I made my comments based upon that input and the
following.
According to C63.7 Section 6.1, . . . it may be prudent to
This will be my last comment on this topic.
The following bulletin came from the CDRH web page:
http://www.fda.gov/cdrh/radhlth/index.html
HHS NEWS
U.S. Department of Health and Human Services
P97-45 FOOD AND DRUG
ADMINISTRATION
FOR IMMEDIATE
Greetings EMC / Product Safety Professionals!
I am trying to contact Lorie Nichols of Conformity. Unfortunately, the phone
numbers I have are no longer in service. Does anyone have any current contact
information on Lorie or on Conformity?
Regards,
Randy Flinders
EMC Engineer
Emulex
Looks like if you hit someone who has been drinking with a laser pointer,
they blow up.
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