Dear Rick,
I think MTE will be happy to supply the CX4-SFP+ converter box. We have
been trying to collect the set of requirements from all Casperites, so
that MTE can think of a big, single order (Rakesh Mehta, owner of MTE, is
also cc'ed here). So, if you would like to send in your requirements, we
can add those to the total count.
With best wishes,
Yashwant.
------------------------------------------------------
Yashwant Gupta
National Centre for Radio Astrophysics (TIFR)
Pune University Campus, Pune 411 007
India.
Phone : +91-20-25719242 (Pune);
+91-2132-252119/258316 (GMRT)
Fax : +91-20-25692149/25697257
email : [email protected]
------------------------------------------------------
On Fri, 5 Oct 2012, John Ford wrote:
hi rick,
there are no cx4-sfp+ cables, as there's a format conversion
(8/10 encoding to 64/66) so you need electronics.
you can purchase single cx4-sfp+ adapters,
made by ~three different companies, $1Kish.
there are less expensive CX4 fiber cables than the one you received a
quote
on.
details on various cable vendors are on the casper web site.
but as far as i know, the fiber cables all need power through the
connector.
we might have some you can try out. perhaps you could open the
connector, and solder a wire, and feed 12 volts in.
MTE India sells the 4 and 8 channel cx-4 to SFP converter box.
Looks like a good solution.
Search the casper mail archive for:
8-port CX4 to SFP+ adapter unit : now available
by Yashwant Gupta:
Dear Casperites,
During the CASPER workshop last month, we announced the development of the
CX4 to SFP+ standalone unit for ROACH-1 board which has been produced
jointly by Mechatronics Test Equipment (MTE) Ltd., Pune and GMRT
(NCRA-TIFR). A poster about this was also displayed during the workshop, a
copy of which is attached alongwith.
We are pleased to announce that this is unit is now fully tested and ready
for release.
The unit comes with four/eight port CX4 to SFP+ conversion options. It is
available in a standard 2U rack mountable enclosure. It has two PCBs each
having a quad PHY chip from Vitesse for CX4 to SFP+ conversion. The unit
has in-built SMPS and cooling arrangement. It is meant for use with the
ROACH-1 board and has passed preliminary tests, including test runs in the
GMRT packetised correlator.
Mechatronics Test Equipments is willing to mass produce these units for
use by CASPERites. However, they would like to get an estimate of the
number of units required within the CASPER community, so that appopriate
pricing can be decided.
We request all those interested in procuring this adapter to send us the
number of units they would be interested to order, and also some
indication of the time scale of the requirement.
With best wishes,
Yashwant
best wishes,
dan
On Thu, Oct 4, 2012 at 3:07 PM, rick raffanti <[email protected]>
wrote:
Hi Casperions,
See below from Anton Tremsin at SSL. We are using the ROACH-I and
have no need for the power of ROACH-2. So we're stuck with CX4
cables, and a CX4 NIC. Are there any other ways to go here? I saw a
posting here about a 4-channel CX4-to-SPF+ box, but that's big and
unwieldy and power hungry. Is it possible to go CX4 to SFP+ in the
cable and then buy an SFP+ NIC? Or something like that?
Thanks,
Rick
Raffanti
-------- Original Message -------- Subject: 10Gb fiberoptic cable
Date: Thu,
04 Oct 2012 14:21:10 -0700 From: Anton Tremsin
<[email protected]><[email protected]> To:
Rick Raffanti <[email protected]> <[email protected]>
Hi Rick,
I found the company which can sell us the 10Gb fiberoptic cable, exactly
the same as I have now. I went through a long chain of very helpful
people and in the end here it is.
If anyone at Casper need that one we can share the access to those guys.
They did not ask for the minimum order, but their price is quite a bit
higher than what we had before. Since we do not have choice and do need
those I guess we should buy a couple of them before they become obsolete
in that company.
Do you think they will keep active the network cards with CX4 (this new
version T420)? Or we will have to deal with the conversion to SFP(?)
fiberoptic on one side and a converter (quite expensive and bulky) on
Roach side?
Anton
