Torun (Tr) Station Report
(TOG Meeting, Torun, April 17th, 2009)
Brief Report of Recent EVN Sessions Problems
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In the October-November 2008 session Tr was scheduled to observe for 17
experiments at 6 and 18 cm wavelengths. All these observations were performed
without any major problem.
The February-March 2009 session was longer and in Tr consisted of 26 experiments at
wavelengths of 5, 6 and 18 cm. Observations generally passed smoothly. Small perturbations
arised initially because of the new Mark5a software (SDK8) which wouldn't extract the
FTP file, but very soom JIVE experts amended the problem by supplying a patch.
We also lost some recording time in two C-band experiments due to a problem
with the recorder. It doesn't tolerate moving of partly recorded packs
from the bank B to bank A and hangs up (which in the past might have been mistakenly
attributed to a failing diskpack). Now it appears that this problem concerns all Mark5A units.
For these two sessions we experimentally posted some of our calibration data
in the internet in the form of graphs of the noise diode equivalent temperature (Tcal)
and system equivalent temperature (Tsys) for each experiment.
See these links:
Tcal and Tsys in Sesssion 3/08 (October 2008)
Tcal and Tsys in Sesssion 1/09 (Feb/Mar 2009)
No changes in this category.
Changes/Upgrades Made to Hardware/Software
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A second processor has been mounted on the matherboard of Mark5A along with
a stronger (1000 W) power supply
Mark5A OS is now Debian "Etch" version 4.0
with the package mark5a_1.0.2-i386.deb
Mark5A application code is Mark5A2007y.225d
FS 9.9.2 version has been used in both sessions.
The station has participated in all regular, testing and demonstration
experiments organized by JIVE. As proved during recent experiments and tests, our
Mark5A and fibre connection are now capable of sending e-VLBI data to JIVE at
the rate of 1024 Mb/s.
Kaz Borkowski, Magda Kunert-Bajraszewska & Genek Pazderski