From: John Reynolds <John.Reynolds_at_email.protected>
Date: Fri, 19 Jun 2015 06:56:08 +1000 (AEST)

Jon,

ftp://ftp.atnf.csiro.au/pub/people/vlbi/lba_das/UserMan/MO_doc/bac_con2.doc

looks like it might be it. Dick - can you confirm?

Cheers,
John R


On Fri, 19 Jun 2015, John Reynolds wrote:

> Jon,
>
>>> If not the relevant files should be somewhere on the public VLBI site
>>> as we sent them to JER for this purpose quite recently. Have fun!
>
> Yep I recently stuck a bunch of files here;
>
> ftp://ftp.atnf.csiro.au/pub/people/vlbi/lba_das/UserMan
>
> which (without having checked) are the machine-readable versions of all/most
> of the docs in the printed DAS manual.
>
> Also if you have trouble resurrecting the DOS version of the control program
> I'm sure someone (Chris?) could help you with the more modern Linux version
> we run at the ATNF observatories.
>
> Cheers,
> John R
>
>
> On Thu, 18 Jun 2015, Jonathan Quick wrote:
>
>> Hi Dick
>>
>> On Thu, June 18, 2015 10:51 am, Dick.Ferris_at_email.protected
>>> Well, life has taken a few unexpected turns recently. Last year one
>>> consequence of a major budget cut was that my position became redundant so
>>> I
>>> took early retirement and now operate as a Hon Fellow, i.e. volunteer, two
>>> days a week, plus whenever I check my mail. This means I keep my desk and
>>> email so I can help support my toys like this!
>>
>> Thanks for 'volunteering' :-)
>>
>>> OK, I agree that it looks like a backplane fault, say a dry joint or
>>> hairline
>>> crack. There should be some connector pin tables towards the back of the
>>> manual. If not the relevant files should be somewhere on the public VLBI
>>> site
>>> as we sent them to JER for this purpose quite recently. Have fun!
>>
>> Erk. We don't have copies of those and I'm not quite sure where to look.
>> Anyone care to enlighten us where they can be found .. or to scan and send
>> us
>> a copy?
>>
>>> Also it seems there is little point in changing to manual control, as all
>>> the
>>> config stuff is managed by the Filter module, and if it can't talk to the
>>> Sampler regarding AGC mode it can't talk to it about anything else. Then
>>> again don't let me stop you trying, you never know your luck!
>>>
>>> I am still interested to see what the analog (reconstituted digital) port
>>> looks like, especially as "...>>> the level readout then takes a few
>>> seconds
>>> to >>> slide across from one end to the other". If the signal looks OK
>>> at
>>> this point, try increasing and decreasing the RF input level by a few dB
>>> and
>>> watch what happens. Likewise the threshold and statistics levels of the
>>> 2-bit data at the DAS Output / S2 Input ports would be interesting.
>>
>> Well I', going to have to try dig deeper as...
>>
>>> Our best hope is that Brett's suggestion nails it.
>>
>> ... that is rules out :-(
>>
>> Will keep you posted.
>>
>> Regards
>> Jon
>>
>>
>
Received on 2015-06-19 06:56:09