RE: ToO for Wednesday (VX017A)
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From: <Jamie.Stevens_at_email.protected>
Date: Wed, 29 May 2013 00:34:36 +0000
Hi Shinji,
As cdisko is only sending control requests to the recorder_server, restarting it does not change anything. The latest cdisko2 is required to correctly operate the new features of the latest recorder_server, although the old cdisko can still control the basic functionality.
You can fix the problems easily though by simply restarting the recorder_server. As vlbi on tdvsi (or whatever the machine is called): "/etc/init.d/recorder_server restart". This will reset all the recording parameters to the defaults, which will be smaller files and non-inverted recording.
cheers
Jamie
________________________________________
From: owner-vlbiobs_at_atnf.<!--nospam-->csiro.au [owner-vlbiobs_at_atnf.<!--nospam-->csiro.au] on behalf of Horiuchi, Shinji [shoriuchi_at_cdscc.<!--nospam-->nasa.gov]
Sent: Wednesday, 29 May 2013 10:28
To: Reynolds, John (CASS, Marsfield); shinji horiuchi; Phillips, Chris (CASS, Marsfield)
Cc: James Lovell; Cormac Reynolds; LBA list observers; Jean-Pierre Macquart
Subject: RE: ToO for Wednesday (VX017A)
Hi John and Chris,
OK, I understand that our goal is not detection of pulsars but detection
of fringes.
But it appears we have only 64MHz_f.pro for 64MHz recording at Tid.
There is another version with "64MHz_Spec_Flipped" parameters 1 & 1
(while 64MHz_f.pro has 0 & 0) but this doesn't seems to change spectra.
Can I use either of these?
Then I tried to use cdisko2 and I could change mode to invert the
spectra. Now even cdisko (not 2) is recording inverted spectra once this
was done.
But the problem now is it doesn't break up into small files (i.e. every
10 sec) but just records into a big file. I might have done something
bad.
How can I fix?
Because I haven't tested cdisko2 long enough, I would use just cdisko
(not 2) for tonight.
Cheers,
Shinji
-----Original Message-----
From: John Reynolds [mailto:John.Reynolds_at_csiro.<!--nospam-->au]
Sent: Wednesday, 29 May 2013 9:57 AM
To: shinji horiuchi
Cc: James Lovell; Cormac Reynolds; LBA list observers; Jean-Pierre
Macquart; Horiuchi, Shinji
Subject: Re: ToO for Wednesday (VX017A)
Shinji,
>By the way, do we turn off the automatic gain control on DAS for this
>experiment?
I would say leave AGC and thresholds running as normal. Otherwise it
will become even more difficult to manage the difference in levels
between the target and the cals.
In any case the ToO proposal appears to discount the possibility of a
pulsed signal being detectable at this frequency so I assume there'd be
no interest in disabling these loops.
Cheer,s
John R
On Wed, 29 May 2013, shinji horiuchi wrote:
>By the way, do we turn off the automatic gain control on DAS for this
>experiment?
>
>Cheers,
>Shinji.
>
>
>On 28 May 2013 16:40, shinji horiuchi <shoriuch_at_gmail.<!--nospam-->com> wrote:
>
>>Cormac,
>>
>>I guess SgrA* at L-band is still weaker than ambient load. DAS for
>>64MHz profile for L-Band looks fine with the level between sky and
ambient load.
>>
>>As I told you in the separate email, 70m is only available for
>>limited time, i.e. 10:00-13:00 and 17:45-19:30, we should take some
lisk for Tid.
>>The antenna is yet to return to be operational and I won't be onsite
>>to run this, leaving Phil Pope in ops team to run this.
>>
>>Cheers,
>>Shinji.
>>
>>
>>On 28 May 2013 15:50, John Reynolds <John.Reynolds_at_csiro.<!--nospam-->au> wrote:
>>
>>>Shinji,
>>>
>>>
>>>I would just play with manual attenuators to get the signal within
>>>the
>>>>right range.
>>>>
>>>
>>>That could be twice every 6 minutes, as we switch between the pulsar
>>>and the cal. Be nice to have some help if you're doing this.
>>>
>>>On the other hand the DAS might just be able to cope with the range,
>>>though SgrA* is the strongest source in the sky other than the Sun
>>>so I'm guessing maybe not.
>>>
>>>Cheers,
>>>John R
>>>
>>>
>>>On Tue, 28 May 2013, shinji horiuchi wrote:
>>>
>>>I would just play with manual attenuators to get the signal within
>>>the
>>>>right range.
>>>>
>>>>Cheers,
>>>>Shinji.
>>>>
>>>>
>>>>On 28 May 2013 14:27, James Lovell <Jim.Lovell_at_utas.<!--nospam-->edu.au> wrote:
>>>>
>>>>Some programmable attenuators would be nice at Tid. There were
>>>>some
>ready
>to install when I was there. Leigh Cameron even got them working
>but they caused RFI (or something) so had to be removed.
>
>Maybe if Shinji could plumb the signal though the MkIV rack as
>this has programmable attenuators that can be controlled from the
Field System.
>
>Or perhaps better to record to Mark5 and have a couple of extra
>procedures that are called after source changes to adjust the
>attenuation? Then no re-wiring is needed.
>
>Cheers,
>Jim
>
>
>
>
>On 28/05/2013, at 2:14 PM, John Reynolds <John.Reynolds_at_csiro.<!--nospam-->au>
>wrote:
>
>Cormac,
>>
>>some Tid time has just become available for vx017a, so I have
>>updated
>>>
>>
>>Should be fun maintaining acceptable levels when switching on and
>>off
>>
>SgrA, something that promises to be interesting at Parkes as well.
>
>>
>>Cheers,
>>John R
>>
>>On Tue, 28 May 2013, Cormac Reynolds wrote:
>>
>>hi,
>>>
>>>some Tid time has just become available for vx017a, so I have
>>>updated the schedule (and redistributed). Please make sure you
>>>are using the vex file with 'PI revision number: 2.0'. Some of
>>>the scan timings have changed to incorporate the slower moving
antenna.
>>>
>>>thanks,
>>>Cormac.
>>>
>>>On 27 May 2013 18:40, Cormac Reynolds <c.reynolds_at_curtin.<!--nospam-->edu.au>
>>>wrote:
>>>
>>>>hi all,
>>>>
>>>>I have created a schedule for Wednesday's LBA ToO. Schedules
>>>>have been distributed to the telescopes and the wiki pages are
>>>>in place:
>>>>http://www.atnf.csiro.au/vlbi/**wiki/index.php?n=LBAMay2013.**V
>>>>X017A<http://www.atnf.csiro.au/vlbi/wiki/index.php?n=LBAMay2013
>>>>.VX017A>
>>>>
>>>>Regards,
>>>>Cormac
>>>>
>>>>--
>>>>------------------------------**----------------------
>>>>Cormac Reynolds
>>>>Phone: +61 8 9266 3785
>>>>Fax: +61 8 9266 9110
>>>>email: c.reynolds_at_curtin.<!--nospam-->edu.au
>>>>------------------------------**----------------------
>>>>
>>>
>>>
>>>
>>>--
>>>------------------------------**----------------------
>>>Cormac Reynolds
>>>Phone: +61 8 9266 3785
>>>Fax: +61 8 9266 9110
>>>email: c.reynolds_at_curtin.<!--nospam-->edu.au
>>>------------------------------**----------------------
>>>
>>>
>
>
>>>>
>>
>
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Received on 2013-05-29 10:34:53
Date: Wed, 29 May 2013 00:34:36 +0000
Hi Shinji,
As cdisko is only sending control requests to the recorder_server, restarting it does not change anything. The latest cdisko2 is required to correctly operate the new features of the latest recorder_server, although the old cdisko can still control the basic functionality.
You can fix the problems easily though by simply restarting the recorder_server. As vlbi on tdvsi (or whatever the machine is called): "/etc/init.d/recorder_server restart". This will reset all the recording parameters to the defaults, which will be smaller files and non-inverted recording.
cheers
Jamie
________________________________________
From: owner-vlbiobs_at_atnf.<!--nospam-->csiro.au [owner-vlbiobs_at_atnf.<!--nospam-->csiro.au] on behalf of Horiuchi, Shinji [shoriuchi_at_cdscc.<!--nospam-->nasa.gov]
Sent: Wednesday, 29 May 2013 10:28
To: Reynolds, John (CASS, Marsfield); shinji horiuchi; Phillips, Chris (CASS, Marsfield)
Cc: James Lovell; Cormac Reynolds; LBA list observers; Jean-Pierre Macquart
Subject: RE: ToO for Wednesday (VX017A)
Hi John and Chris,
OK, I understand that our goal is not detection of pulsars but detection
of fringes.
But it appears we have only 64MHz_f.pro for 64MHz recording at Tid.
There is another version with "64MHz_Spec_Flipped" parameters 1 & 1
(while 64MHz_f.pro has 0 & 0) but this doesn't seems to change spectra.
Can I use either of these?
Then I tried to use cdisko2 and I could change mode to invert the
spectra. Now even cdisko (not 2) is recording inverted spectra once this
was done.
But the problem now is it doesn't break up into small files (i.e. every
10 sec) but just records into a big file. I might have done something
bad.
How can I fix?
Because I haven't tested cdisko2 long enough, I would use just cdisko
(not 2) for tonight.
Cheers,
Shinji
-----Original Message-----
From: John Reynolds [mailto:John.Reynolds_at_csiro.<!--nospam-->au]
Sent: Wednesday, 29 May 2013 9:57 AM
To: shinji horiuchi
Cc: James Lovell; Cormac Reynolds; LBA list observers; Jean-Pierre
Macquart; Horiuchi, Shinji
Subject: Re: ToO for Wednesday (VX017A)
Shinji,
>By the way, do we turn off the automatic gain control on DAS for this
>experiment?
I would say leave AGC and thresholds running as normal. Otherwise it
will become even more difficult to manage the difference in levels
between the target and the cals.
In any case the ToO proposal appears to discount the possibility of a
pulsed signal being detectable at this frequency so I assume there'd be
no interest in disabling these loops.
Cheer,s
John R
On Wed, 29 May 2013, shinji horiuchi wrote:
>By the way, do we turn off the automatic gain control on DAS for this
>experiment?
>
>Cheers,
>Shinji.
>
>
>On 28 May 2013 16:40, shinji horiuchi <shoriuch_at_gmail.<!--nospam-->com> wrote:
>
>>Cormac,
>>
>>I guess SgrA* at L-band is still weaker than ambient load. DAS for
>>64MHz profile for L-Band looks fine with the level between sky and
ambient load.
>>
>>As I told you in the separate email, 70m is only available for
>>limited time, i.e. 10:00-13:00 and 17:45-19:30, we should take some
lisk for Tid.
>>The antenna is yet to return to be operational and I won't be onsite
>>to run this, leaving Phil Pope in ops team to run this.
>>
>>Cheers,
>>Shinji.
>>
>>
>>On 28 May 2013 15:50, John Reynolds <John.Reynolds_at_csiro.<!--nospam-->au> wrote:
>>
>>>Shinji,
>>>
>>>
>>>I would just play with manual attenuators to get the signal within
>>>the
>>>>right range.
>>>>
>>>
>>>That could be twice every 6 minutes, as we switch between the pulsar
>>>and the cal. Be nice to have some help if you're doing this.
>>>
>>>On the other hand the DAS might just be able to cope with the range,
>>>though SgrA* is the strongest source in the sky other than the Sun
>>>so I'm guessing maybe not.
>>>
>>>Cheers,
>>>John R
>>>
>>>
>>>On Tue, 28 May 2013, shinji horiuchi wrote:
>>>
>>>I would just play with manual attenuators to get the signal within
>>>the
>>>>right range.
>>>>
>>>>Cheers,
>>>>Shinji.
>>>>
>>>>
>>>>On 28 May 2013 14:27, James Lovell <Jim.Lovell_at_utas.<!--nospam-->edu.au> wrote:
>>>>
>>>>Some programmable attenuators would be nice at Tid. There were
>>>>some
>ready
>to install when I was there. Leigh Cameron even got them working
>but they caused RFI (or something) so had to be removed.
>
>Maybe if Shinji could plumb the signal though the MkIV rack as
>this has programmable attenuators that can be controlled from the
Field System.
>
>Or perhaps better to record to Mark5 and have a couple of extra
>procedures that are called after source changes to adjust the
>attenuation? Then no re-wiring is needed.
>
>Cheers,
>Jim
>
>
>
>
>On 28/05/2013, at 2:14 PM, John Reynolds <John.Reynolds_at_csiro.<!--nospam-->au>
>wrote:
>
>Cormac,
>>
>>some Tid time has just become available for vx017a, so I have
>>updated
>>>
>>
>>Should be fun maintaining acceptable levels when switching on and
>>off
>>
>SgrA, something that promises to be interesting at Parkes as well.
>
>>
>>Cheers,
>>John R
>>
>>On Tue, 28 May 2013, Cormac Reynolds wrote:
>>
>>hi,
>>>
>>>some Tid time has just become available for vx017a, so I have
>>>updated the schedule (and redistributed). Please make sure you
>>>are using the vex file with 'PI revision number: 2.0'. Some of
>>>the scan timings have changed to incorporate the slower moving
antenna.
>>>
>>>thanks,
>>>Cormac.
>>>
>>>On 27 May 2013 18:40, Cormac Reynolds <c.reynolds_at_curtin.<!--nospam-->edu.au>
>>>wrote:
>>>
>>>>hi all,
>>>>
>>>>I have created a schedule for Wednesday's LBA ToO. Schedules
>>>>have been distributed to the telescopes and the wiki pages are
>>>>in place:
>>>>http://www.atnf.csiro.au/vlbi/**wiki/index.php?n=LBAMay2013.**V
>>>>X017A<http://www.atnf.csiro.au/vlbi/wiki/index.php?n=LBAMay2013
>>>>.VX017A>
>>>>
>>>>Regards,
>>>>Cormac
>>>>
>>>>--
>>>>------------------------------**----------------------
>>>>Cormac Reynolds
>>>>Phone: +61 8 9266 3785
>>>>Fax: +61 8 9266 9110
>>>>email: c.reynolds_at_curtin.<!--nospam-->edu.au
>>>>------------------------------**----------------------
>>>>
>>>
>>>
>>>
>>>--
>>>------------------------------**----------------------
>>>Cormac Reynolds
>>>Phone: +61 8 9266 3785
>>>Fax: +61 8 9266 9110
>>>email: c.reynolds_at_curtin.<!--nospam-->edu.au
>>>------------------------------**----------------------
>>>
>>>
>
>
>>>>
>>
>
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If you received this email in error, please notify the sender
immediately and delete the email and attachments. This email may
contain private or sensitive information. Any forwarding or
dissemination of information, other than by entities directly
addressed in this email is prohibited. The views expressed in
this email do not necessarily reflect the views of CDSCC or its business partners. The organisations accept no
responsibility for any virus that potentially could be
transmitted in this email, however all email is scanned prior
to being transmitted.
################################################################
Received on 2013-05-29 10:34:53