LR usually needs padding in that scenario, IMHO.
Usually does not.
1G parts are so cheap that measurement, test and the attenuators
(unless you are wrapping the fibre round a pencil) will cost more
than each device is worth. How many fail?
If in doubt check the device spec such as
Hi Chris,
I'm with an optics vendor, Luma optics. All our optics are field programmable
to work in any intended network environment. Regarding your question, its
unnecessary to pad a 10km LR, even with such a short reach ( 20m) . If it were
an ER or ZR, it would be a different story.
Good
It's a pretty normal situation. even with a 1-2m jumper I see light levels
that are well below the maximum rx levels for 10km optics. e.g. the max might
be .5 and the actual readings are -1.4 - -2.7. our WDM terminals sit in the the
adjacent racks to the pop routers so they're all like that.
On Sun, 20 Oct 2013, joel jaeggli wrote:
It's a pretty normal situation. even with a 1-2m jumper I see light levels
that are well below the maximum rx levels for 10km optics. e.g. the max might
be .5 and the actual readings are -1.4 - -2.7. our WDM terminals sit in the the
adjacent racks to
Subject: Re: Pad 1310nm cross-connects? Date: Sun, Oct 20, 2013 at 07:21:42AM
+0200 Quoting Måns Nilsson (mansa...@besserwisser.org):
Subject: Pad 1310nm cross-connects? Date: Sat, Oct 19, 2013 at 07:33:19PM
-0700 Quoting Chris Costa (ccosta92...@gmail.com):
What are the opinions/views
In a message written on Sat, Oct 19, 2013 at 07:33:19PM -0700, Chris Costa
wrote:
What are the opinions/views on attenuating short, 1310nm LR cross-connects.
Assume 20m cable length and utilizing the same vendor optics on each
side of the link. Considering the LR transmit spec doesn't
What are the opinions/views on attenuating short, 1310nm LR cross-connects.
Assume 20m cable length and utilizing the same vendor optics on each
side of the link. Considering the LR transmit spec doesn't exceed the
receiver's high threshold value do you pad the receiver closer to the
median RX
On Sat, 19 Oct 2013, Chris Costa wrote:
median RX range to avoid potential receiver burnout over time, or just
leave it un-padded?
By padding, you mean insert attenuator?
I have run networks with thousands of 10km optical links (1GBASE-LX,
10GBASE-LR) and none of them have used attenuators
On Sat, 19 Oct 2013, Chris Costa wrote:
What are the opinions/views on attenuating short, 1310nm LR cross-connects.
Assume 20m cable length and utilizing the same vendor optics on each
side of the link. Considering the LR transmit spec doesn't exceed the
receiver's high threshold value do you
Subject: Pad 1310nm cross-connects? Date: Sat, Oct 19, 2013 at 07:33:19PM -0700
Quoting Chris Costa (ccosta92...@gmail.com):
What are the opinions/views on attenuating short, 1310nm LR cross-connects.
Assume 20m cable length and utilizing the same vendor optics on each
side of the link
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