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Today's Topics:
1. Re: PPS fanout buffer (Per Zetterberg)
2. Re: PPS fanout buffer (John Ackermann N8UR)
----------------------------------------------------------------------
Message: 1
Date: Sat, 12 May 2012 19:15:16 +0000
From: Per Zetterberg <[email protected]>
To: "[email protected]" <[email protected]>, "[email protected]"
<[email protected]>
Subject: Re: [USRP-users] PPS fanout buffer
Message-ID: <[email protected]>
Content-Type: text/plain; charset="us-ascii"
The price seems to be 445$ and up.
We built a similar PPS splitter based on a hex-inverter:
https://www.elfa.se/elfa3~eu_en/elfa/init.do?item=73-620-25&toc=0
It works fine for us even with more than 10 meter cables. I recall verifying
that the timing error between units was at most 10ns (or one clock cycle).
BR/
Per
________________________________________
From: [email protected] [[email protected]]
on behalf of Juha Vierinen [[email protected]]
Sent: Friday, May 11, 2012 11:25 PM
To: [email protected]
Subject: [USRP-users] PPS fanout buffer
Hi,
I found this supplier for connectorized fanout buffers.
http://www.pulseresearchlab.com/products/categories/fanout.htm
This should be useful for anyone working with lots of usrp2-series devices.
Does anyone know of another supplier with possibly cheaper prices?
juha
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------------------------------
Message: 2
Date: Sat, 12 May 2012 15:24:18 -0400
From: John Ackermann N8UR <[email protected]>
To: Per Zetterberg <[email protected]>
Cc: "[email protected]" <[email protected]>, "[email protected]"
<[email protected]>
Subject: Re: [USRP-users] PPS fanout buffer
Message-ID: <[email protected]>
Content-Type: text/plain; charset=windows-1252; format=flowed
Depending on the type of cable/connectors you're looking for, the TADD-3
PPS distribution amplifier from TAPR might work -- it has 6 BNC outputs
that can drive 50 ohm cables, and two RS-232 outputs on 10-pin IDC
headers. There are two BNC inputs jumpers let you either tie all 8
outputs to one input, or have each input drive four outputs.
It's a kit of through-hole parts, and is $69 (less if you join TAPR).
Here's info on it: http://tapr.org/kits_tadd-3.html
(Disclaimer: I designed the TADD-3, so I'm biased but don't have a
financial stake. TAPR is a non-profit organization and keeps all the
proceeds from sales to fund member services and new projects.)
John
----
Per Zetterberg said the following on 05/12/2012 03:15 PM:
>
> The price seems to be 445$ and up.
>
> We built a similar PPS splitter based on a hex-inverter:
>
> https://www.elfa.se/elfa3~eu_en/elfa/init.do?item=73-620-25&toc=0
>
> It works fine for us even with more than 10 meter cables. I recall verifying
> that the timing error between units was at most 10ns (or one clock cycle).
>
> BR/
> Per
>
>
> ________________________________________
> From: [email protected] [[email protected]]
> on behalf of Juha Vierinen [[email protected]]
> Sent: Friday, May 11, 2012 11:25 PM
> To: [email protected]
> Subject: [USRP-users] PPS fanout buffer
>
> Hi,
>
> I found this supplier for connectorized fanout buffers.
>
> http://www.pulseresearchlab.com/products/categories/fanout.htm
>
> This should be useful for anyone working with lots of usrp2-series devices.
>
> Does anyone know of another supplier with possibly cheaper prices?
>
> juha
>
> _______________________________________________
> USRP-users mailing list
> [email protected]
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
> _______________________________________________
> USRP-users mailing list
> [email protected]
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
------------------------------
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End of USRP-users Digest, Vol 21, Issue 13
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