Thank you, Jason. I'll you know how it goes. B.t.w., this is the
beginning of development for the DSN Transient Observatory about which
Kara Kundert spoke at the last workshop. The hardware for Goldstone is
still being assembled but we now have a test set-up in the lab.
We will be happy to host any designs and requests for commensal
observations when we are set up.
Thanks again,
Tom
On 03/05/2012 12:05 AM, Jason Manley wrote:
For those interested, here is a design similar to tut3 for the katADC...
Attached is an example of an RFI monitoring system that we used last
year to do some electric fence measurements, along with some basic
software to control it. Apologies for the messy nature... it was
thrown together rather hurriedly. Still, it should demonstrate most of
what you want. It uses the KATADC in interleaved mode to give a
~900MHz band from a 900MHz, 0dBm clock source.
There is a katadc yellow block in the SKA-SA mlib_devel library and I
think it's already made its way into the "stable", standard CASPER
library. Get ours here: https://github.com/ska-sa/mlib_devel
The yellow block initialises the ADC and everything automatically, so
you shouldn't need anything else in the way of software to configure
it. But if you want to play with it, the katadc control software
resides in corr (the packetised correlator control package), available
on pypi: http://pypi.python.org/pypi/corr or get the bleeding-edge
version here: https://github.com/ska-sa/corr/. CORR's probably got a
lot more in there than you need but you can rip-out the bits you want
(see src/katadc).
Jason
PS:
to use the included software, run rfi_init.py, then run either
rfi_spec or rfi_time.py to bring up some plots. Try 'em with the -h
flag to see command-line options. You will need corr installed to make
this lot work and you'll also need to modify line 13 in src/cam.py to
reflect your roach's IP address. You can also add antenna calibration
files and things to take calibrated electric field measurements so
this is a useful little instrument.
On 04 Mar 2012, at 21:38, Tom Kuiper wrote:
> I would like to test a set-up that I've just configured. I've got a
KatADC in Z-Doc 0 of a ROACH-1. The signal is going into IF 0.
Pretty much anything will do, though. It's easy to swap Z-Docs and
IF inputs, so that's not a constraint.
>
> Even the first stage of a FX correlator would be fine. The ROACH is
connected to a computer with a 10 GBe card and there are two GPU
enabled computers, also with 10 GBe ports, on the same subnet.
>
> The KatADC version of Workshop 2010 Tutorial 3 is nice because it
has a graphical output that shows everything is working, i.e., I don't
have to do anymore work :-) .
>
> Thanks and regards,
>
> Tom
>
> --
> I or me? http://www.oxforddictionaries.com/page/145
>
>
>
Jason Manley
082 662 7726
--
I or me? http://www.oxforddictionaries.com/page/145
