On Tue, 9 Jun 2009, Kevin Hodle wrote:
Hi Deepak,
Most modern DWDM transponders with 160km network side optics will
be launching anywhere from -2dBm to +2dBm depending on how warm the
laser is, assuming a +2 dBm launch you are looking at around 1.6mW -
It might be good to note that there
I forget who the vendor is now, but their shelves are sealed with a door
which, when opened, turns off all the lasers on the shelf so you can
work on it, yes, a simple provisioning operation causes an outage /
protection switchover!!
Dave.
Deepak Jain wrote:
At what power level do DWDM systems
Deepak Jain dee...@ai.net writes:
Any pointers to a document saying 1550nm becomes dangerous at dbM?
Even -30 dBM would be pretty dangerous. You sure you don't mean dBm?
;-)
-r
Reminds me of the old warning/attention sign over a termination rack...
WARNING: Do not look into laser with remaining eye.
Jeff
On Jun 9, 2009, at 12:43 PM, Jeff Kell wrote:
Reminds me of the old warning/attention sign over a termination
rack...
WARNING: Do not look into laser with remaining eye.
It will be the last thing you never saw.
--
TTFN,
patrick
On Tue, Jun 09, 2009 at 12:43:09PM -0400, Jeff Kell wrote:
Reminds me of the old warning/attention sign over a termination rack...
WARNING: Do not look into laser with remaining eye.
The only problem with those funny signs is they scare remote hands techs
into never looking at a fiber
On Jun 9, 2009, at 2:06 PM, Richard A Steenbergen wrote:
On Tue, Jun 09, 2009 at 12:43:09PM -0400, Jeff Kell wrote:
Reminds me of the old warning/attention sign over a termination
rack...
WARNING: Do not look into laser with remaining eye.
The only problem with those funny signs is they
In a message written on Tue, Jun 09, 2009 at 01:06:42PM -0500, Richard A
Steenbergen wrote:
The only problem with those funny signs is they scare remote hands techs
into never looking at a fiber because they don't want to try and
understand the difference between a SX GBIC and a class 3
Leo Bicknell wrote:
In a message written on Tue, Jun 09, 2009 at 01:06:42PM -0500, Richard A
Steenbergen wrote:
The only problem with those funny signs is they scare remote hands techs
into never looking at a fiber because they don't want to try and
understand the difference between a SX
On Tue, Jun 09, 2009 at 04:06:58PM -0400, Deepak Jain wrote:
This conversation has gone places I didn't expect. Leo, that card is
pretty cool, but for a few hundred $$ more, you can get a light meter
(if someone is smart enough to use the card...)
Now if only you could train people to use
Deepak Jain wrote:
Does anyone *use* any eye protection (other that not looking at the
light, turning off the light etc) -- I mean like protective goggles,
etc, when doing simple things like adding/removing patch cables from an
SMF patch panel.
There are osha requirements and ansi
On Tue, Jun 09, 2009 at 04:06:58PM -0400, Deepak Jain wrote:
This conversation has gone places I didn't expect. Leo, that card is
pretty cool, but for a few hundred $$ more, you can get a light meter
(if someone is smart enough to use the card...)
In a pinch the camera on a MacBook pro can be
- Original Message -
From: Kevin Loch kl...@kl.net
Cc: nanog@nanog.org
Sent: Tuesday, June 09, 2009 12:17 PM
Subject: Re: Eye protection in DWDM systems -- what threshold?
In a pinch the camera on a MacBook pro can be used to detect
presence of IR light. Here's light from a 10Gbase
At what power level do DWDM systems become dangerous to work near (i.e. not
staring into any optics, using light meters, etc)? I never see technicians on
inside DWDM systems using eye protection, but I see power levels of amps going
higher and higher. On a recent meter I saw almost .6mW...
There are erbium doped raman lasers with output of up to 10 watts
continuous wave, they are (obviously) class 4 devices and are considered
hazardous.
3r and 3b emitters shouldn't be directly exposed to the eye, and carry
an appropriate warnings. the 10-80km stuff should all be 1 or 1m and
does't
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