Date   

Re: Latest e-mail from ops

BARRY DAY <barryday@...>
 

Thanks David do you think they would take a travellers cheque?
Barry

----- Original Message -----
From: "David Taylor" <david-taylor@...>
To: <MSG-1@...>
Sent: Saturday, November 15, 2003 11:22 AM
Subject: [MSG-1] Re: Latest e-mail from ops


--- In MSG-1@..., James Brown <satellite@m...> wrote:
Interesting stuff from OPS. A new format for you to wrestle with
David for the IODC (MET 5) relay! And hopefully we are going to
find the UK Met office willing to supply us with a licence for the
dongles.


James,

This announcement puzzles me. I am in touch with Eumetsat and have
just received a data sample of Meteosat 5 data prepared for MSG-1
from July (unfortunately just a single segment). This is in
segmented image format, just like all the other satellite data, and
could easily be added to the program.

However, the OPEN_MTP format is not compressed, or segemented, and
the data files are huge. Even with BZ2 compression (as used on the
FTP services) a single visible-channel file occupies over 8MB (for
the 5000 x 5000 image). So receiving these files will be more
difficult, and require that the OPEN-MTP file be stored on disk
(probably being built up from chunks of files), and then read back
in, be calibrated, and converted to an image.

I hope that Eumetsat reconsider this format, and allow Meteosat 5
data to be sent in the segmented image format used for all other
satellites.

Cheers,
David



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Re: Sky2PC USB

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

I have not encountered any problems so far. The only thing I have
noticed is the difference in Quality and SNR which as you say appear
meaningless although more in line with those on my Digital STB.

Peter
I found that the USB dongle was very unreliable on the one system I
tested with the V2.4.8 drivers. For no apparent reason, the light
on the dongle would go out and no data would be received. The
system could be revived simply by unplugging and re-inserting the
dongle (if you happened to be near the PC at the time), but the lost
data was gone for ever.

OK, it is uncertain what the exact problem was - on that system I am
now running a 1m USB extension cable (having the dongle visible at
the front of the PC it's much easier to check the status, but was
there an issue before with bad contact?), and I am running a
replacement dongle. However, the first dongle now seems to be
running OK on a backup PC (also with the V4.2.2 drivers).

That, coupled with the odd CPU utilisation pattern, says to me steer
clear of V4.2.8.

Cheers,
David


Re: Latest e-mail from ops

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

--- In MSG-1@..., James Brown <satellite@m...> wrote:
Interesting stuff from OPS. A new format for you to wrestle with
David for the IODC (MET 5) relay! And hopefully we are going to
find the UK Met office willing to supply us with a licence for the
dongles.


James,

This announcement puzzles me. I am in touch with Eumetsat and have
just received a data sample of Meteosat 5 data prepared for MSG-1
from July (unfortunately just a single segment). This is in
segmented image format, just like all the other satellite data, and
could easily be added to the program.

However, the OPEN_MTP format is not compressed, or segemented, and
the data files are huge. Even with BZ2 compression (as used on the
FTP services) a single visible-channel file occupies over 8MB (for
the 5000 x 5000 image). So receiving these files will be more
difficult, and require that the OPEN-MTP file be stored on disk
(probably being built up from chunks of files), and then read back
in, be calibrated, and converted to an image.

I hope that Eumetsat reconsider this format, and allow Meteosat 5
data to be sent in the segmented image format used for all other
satellites.

Cheers,
David


Re: Sky2PC USB

Peter Benney <tugboat@...>
 

Changing the drivers may not have been a wise move. With the PCI
card, the V4.2.8 drivers have caused me major problems. Indeed,
having contacted about the problems their advice included trying the
older drivers...which I now use with the V2.6B PCI card.
I have not encountered any problems so far. The only thing I have noticed is the difference in Quality and SNR which as you say appear meaningless although more in line with those on my Digital STB.

Peter


Re: Sky2PC USB

Peter Benney <tugboat@...>
 

Eliminate the IPQ quandary???? Not really. The USB passes its data to the
CPU via an IRQ, usually shared with other system hardware. And you don't
have any option to change it!
My quandry was the B2C2 sharing IRQ18 with the onboard NIC, this is no longer the case with the USB Host Controller with IRQ21.

Peter


Re: Sky2PC USB

Alan Sewards <alan.sewards@...>
 

Eliminate the IPQ quandary???? Not really. The USB passes its data to the
CPU via an IRQ, usually shared with other system hardware. And you don't
have any option to change it!

Best regards - Alan

----- Original Message -----
From: "Peter Benney" <tugboat@...>
To: <MSG-1@...>
Sent: Friday, November 14, 2003 2:26 PM
Subject: [MSG-1] Sky2PC USB


I have just installed Sky2PC USB replacing my original Sky2PC Rev 2.3.
This should eliminate the IRQ quandry. The unit from Timestep came with the
4.2.2. driver/software package but I have downloaded and installed V4.2.8.

Set4PC now show Quality at 96-100% and SNR 16.9 compared with 46% and 8.5
with the 4.2.2 software.

Peter



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Re: Sky2PC USB

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

--- In MSG-1@..., "Peter Benney" <tugboat@g...> wrote:
I have just installed Sky2PC USB replacing my original Sky2PC Rev
2.3. This should eliminate the IRQ quandry. The unit from Timestep
came with the 4.2.2. driver/software package but I have downloaded
and installed V4.2.8.

Changing the drivers may not have been a wise move. With the PCI
card, the V4.2.8 drivers have caused me major problems. Indeed,
having contacted about the problems their advice included trying the
older drivers...which I now use with the V2.6B PCI card.

Set4PC now show Quality at 96-100% and SNR 16.9 compared with 46%
and 8.5 with the 4.2.2 software.

... which appears to be completely meaningless, sadly. Do be sure
that when anyone reports signal levels you specify the DVB receiver
(V2.3 , V2.6B or USB) and the driver version in use.

Cheers,
David


Eumetcast sets new record !

a_van_belle
 

Yesterday 13th November I had no missing segments and even all GOES images were present.
_______________________
Date: 2003-11-13
Missing cycles report
(none)
_______________________
Date: 2003-11-13
Late segments report
(no report)
_______________________
Date: 2003-11-13
Missing HRIT & LRIT segments report
(none)
_______________________
Date: 2003-11-13
Missing rebroadcast & derived segments report
(none)
_______________________
DCP report
151 DCP sequence numbers found, 0 missing
_______________________
DCP/WMO report
232 DCP/WMO sequence numbers found, 0 missing
_______________________
MDD report
206 GTS sequence numbers found, 0 missing


I checked the raw data folder and have the following score:

HRIT MSG (12 channels) 6880 MB
LRIT MSG (5 channels) 160 MB
FSD (3 x 3 channels) 138 MB
DCP data 76 MB
MPEF data 369 MB
GTS data 44 MB
EARS data 160 MB
----------------------------------------------------------+
Total: 7827 MB in 24 hours ! (in over 15.000 files)

With MET5 (IODC) added we might peak at 7.9 GB a day !
Quite a remarkable achievement for an "old" Pentium 3 at 1GHz with 256 MB memory.
Dish 80 cm, Skystar rev2.3, SQ=70-75%

Greetings,
Arne van Belle


Re: Latest e-mail from ops

Douglas Deans <douglas@...>
 

----- Original Message -----
From: "James Brown" <satellite@...>
To: <MSG-1@...>
Sent: Friday, November 14, 2003 3:03 PM
Subject: [MSG-1] Latest e-mail from ops


Interesting stuff from OPS. A new format for you to wrestle with David
for the IODC (MET 5) relay! And hopefully we are going to find the UK
Met office willing to supply us with a licence for the dongles.

Incidentally I have managed to find an application which does interrupt
MSG ingestion and processing - tired running a parallel port zip drive
today. The whole thing snarled up and lost lots of segments.

Cheers,

James
--
James Brown

Very interesting mail. I think the OpenMTP format has already been cracked
as I know GSS 4 can deal with those files from Eumetsat's RSS Archive. So
hopefully not too much work for David.
I have had no word yet either from the Met Office but there is still plenty
of time. Hope it goes smoothly !
I thought printing from the parallel port would be a problem for me (old
printer so no USB option) but surprisingly I can print without any troubles
to the data.

Regards
Douglas.


Latest e-mail from ops

James Brown
 

Interesting stuff from OPS. A new format for you to wrestle with David for the IODC (MET 5) relay! And hopefully we are going to find the UK Met office willing to supply us with a licence for the dongles.

Incidentally I have managed to find an application which does interrupt MSG ingestion and processing - tired running a parallel port zip drive today. The whole thing snarled up and lost lots of segments.

Cheers,

James
--
James Brown


Re: MSG PAYMENT PROBLEM HELP

Timestep <Information@...>
 

From: Dave Cawley
Timestep Dartmouth England
e-mail Information@...
Web site http://www.Time-step.com
Tel. +44 (0)1803 833366
Fax. +44 (0)1803 839498

Without being rude, pay the 8 quid and be very grateful !

Dave


Sky2PC USB

Peter Benney <tugboat@...>
 

I have just installed Sky2PC USB replacing my original Sky2PC Rev 2.3. This should eliminate the IRQ quandry. The unit from Timestep came with the 4.2.2. driver/software package but I have downloaded and installed V4.2.8.

Set4PC now show Quality at 96-100% and SNR 16.9 compared with 46% and 8.5 with the 4.2.2 software.

Peter


MSG PAYMENT PROBLEM HELP

BARRY DAY <barryday@...>
 

HI ALL, dose anyone know how to pay EUMETSAT with out haveing to pay the
bank �8.00 for a bank draft??
I would like to do it on VISA..
Thanks
Barry
barryday@...


Re: May I not regret saying this....

Lawrence <lawrence@...>
 

On Fri, 14 Nov 2003 11:42:02 -0000, you wrote:

Have a look at the Event Viewer.

Cheers, Guy
Yes, I have been, Guy.

best wishes

Lawrence



----- Original Message -----
From: David Taylor
To: MSG-1@...
Sent: Friday, November 14, 2003 11:11 AM
Subject: [MSG-1] Re: May I not regret saying this....


--- In MSG-1@..., Lawrence <lawrence@a...>You could maybe scan for .LOG files timestamped around the time of
the problem, or indeed any files around that time. Might give a
hint as to what is causing the problem!


Re: May I not regret saying this....

Guy Martin <agm@...>
 

Have a look at the Event Viewer.

Cheers, Guy

----- Original Message -----
From: David Taylor
To: MSG-1@...
Sent: Friday, November 14, 2003 11:11 AM
Subject: [MSG-1] Re: May I not regret saying this....


--- In MSG-1@..., Lawrence <lawrence@a...>You could maybe scan for .LOG files timestamped around the time of
the problem, or indeed any files around that time. Might give a
hint as to what is causing the problem!

Cheers,
David


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Re: May I not regret saying this....

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

You could maybe scan for .LOG files timestamped around the time
of
the problem, or indeed any files around that time. Might give a
hint as to what is causing the problem!
Yes, but I admit to not understanding the exact meaning of the log
file
messages. Some say things like 'key expired'. I shall look more
closely when I spot a missing segment, though this will probably be
after the event.
Lawrence,

I meant look on your hard disk for any files modified around the
time of the missing segments, not the Tellique log files (although
they are also worth checking). The idea as that if you find a
modified file in &#92;Pogram Files&#92;Nero etc. it might mean that Nero was
doing the regular activity. Just a thought.

David


Re: May I not regret saying this....

Lawrence <lawrence@...>
 

On Fri, 14 Nov 2003 11:11:27 -0000, you wrote:

snip

So far today - no problems!
Good to hear that, Lawrence.

You are right, in that a program does not have to be shown as a
scheduled task to be scheduled! Any of the processes listed in the
Taks Manager processes tab can, at any time, decide that it wants to
do something. An example is the MSG Data Manager, which wakes up
every 20 seconds or so to look for new files. With something that
is on a daily basis, my guesses would include:

- anti-virus software looking for a data file update
My receive computer does not have anti-virus installed because I don't
receive e-mail or web activity on it.

- any Internet program (e.g. Zone Alarm) looking to see if it is the
latest version
Ditto.


- Windows Update
Inhibited - only run manually as necessary.


What surprises me, though, is that any of these activities result in
missing segments. Although perhaps the story is: no update
required, the program goes back to sleep - update required, CPU-
intensive task required. So only on those days when something was
updated does the segment loss occur.

You could maybe scan for .LOG files timestamped around the time of
the problem, or indeed any files around that time. Might give a
hint as to what is causing the problem!
Yes, but I admit to not understanding the exact meaning of the log file
messages. Some say things like 'key expired'. I shall look more
closely when I spot a missing segment, though this will probably be
after the event.

Lawrence


Re: May I not regret saying this....

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

--- In MSG-1@..., Lawrence <lawrence@a...> wrote:
David - yes, I understand that idea, but again this morning there
were *no* missing segments, so it is not completely consistent. I
cannot see any scheduled tasks listed, though experience tells me
that they can exist with no obvious indication until they happen. I
shall keep investigating, anyway.

So far today - no problems!
Good to hear that, Lawrence.

You are right, in that a program does not have to be shown as a
scheduled task to be scheduled! Any of the processes listed in the
Taks Manager processes tab can, at any time, decide that it wants to
do something. An example is the MSG Data Manager, which wakes up
every 20 seconds or so to look for new files. With something that
is on a daily basis, my guesses would include:

- anti-virus software looking for a data file update

- any Internet program (e.g. Zone Alarm) looking to see if it is the
latest version

- Windows Update

What surprises me, though, is that any of these activities result in
missing segments. Although perhaps the story is: no update
required, the program goes back to sleep - update required, CPU-
intensive task required. So only on those days when something was
updated does the segment loss occur.

You could maybe scan for .LOG files timestamped around the time of
the problem, or indeed any files around that time. Might give a
hint as to what is causing the problem!

Cheers,
David


Re: May I not regret saying this....

Lawrence <lawrence@...>
 

David - yes, I understand that idea, but again this morning there were
*no* missing segments, so it is not completely consistent. I cannot see
any scheduled tasks listed, though experience tells me that they can
exist with no obvious indication until they happen. I shall keep
investigating, anyway.

So far today - no problems!

regards

Lawrence

On Thu, 13 Nov 2003 19:36:20 -0000, you wrote:

--- In MSG-1@..., Lawrence <lawrence@a...> wrote:
So far this morning (and also some of yesterday evening) I have
not seen any holes in my images. There has *always* been a hole in
the 9.45am HRIT image set - but not today.

Long may it continue.

Lawrence
Lawrence, to me having such a time-consistent error points strongly
to a daily scheduled task affecting reception. Perhaps if you can
find out what it was, that might help others...

Cheers,
David


Re: File transmission ended/interrupted (files missing)

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

--- In MSG-1@..., "Peter Benney" <tugboat@g...> wrote:
After 30 hours of perfect reception I have 2 missing segments
reported this morning.
Cycle: 0600
msg-ch02, seg: 5
msg-ch03, seg: 5
Those segments were OK here.

It would seem that files can be reported missing incomplete but
later received. An example is shown here.

This is with data channel 3 - LRIT. I am advised that files of a
higher priority can interrupt the transmission of files at a lower
priority on this channel. MSG-1 SEVIRI data has priority over other
data, so if SEVIRI (MSG-1 imager) data becomes available, the other
data can be interrupted, held in a disk cache, and be resumed
later. You should not normally see this on data channel 2.

Cheers,
David