preliminary fringetest report for N11L1
     =======================================
 
Participating stations:  |Ef | Jb1 | Mc | On |Tr | Wb | Zc | Bd | Sv| Hh | Ur | Sh |

Summary:   Ftp data arrived for all participating stations
           There were fringes to all participating stations except Ef and Tr

Selected fringe plots and sampler stats can be found at:
           "http://www.evlbi.org/tog/ftp_fringes/N11L1"

Legend: Y = Performed as expected
        N = Did not perform as expected
        ? = No feedback available from station
        Blank = Not applicable or waiting for further tests

N11L1, Freq=1634.49 MHz; Mode=512-8-2; obs date=24/02/2011


Stations          |Ef |Jb |Mc |On |Tr |Sh |Ur |Wb |Zc |Sv |Bd |Hh |
Observed          |y  |y  |y  |y  |y  |y  |y  |y  |y  |y  |y  |y  |
Fringes (ftp)     |n  |y  |y  |y  |n  |y  |y  |y  |y  |y  |y  |y  |
Clock offset (ftp)|-  |-1 |-2 |-10|-  |-3 |-3 |ref|8  |3  |4  |-1 |
Recording o.k.    |n  |(y)|y  |y  |n  |y  |y  |y  |y  |y  |y  |y  |
Cross pols o.k.   |n  |y  |y  |y  |n  |y  |y  |y  |y  |y  |y  |y  |
Sampler stats o.k |n  |y  |y  |y  |n  |y  |y  |y  |y  |(y)|y  |y  |
Check BBCs        |n  |ok |ok |ok |n  |ok |ok |ok |ok |ok |ok |ok |
See notes below   |a  |b  |   |c  |d  |   |e  |   |   |f  |   |g  |


Notes:

a ) No Effelsberg fringes, as one of the four MKIV data cables to the MArk5 was connected to the VLBA input. The cable was connected to the correct port after the end of the NME and in time for the user experiments.

b ) Initially the ftp data transfer failed, then file size sent was too big/there was a recording glitch in first ftp scan, but fringes ok for the last two ftp scans

c) Terrible RFI in BBC1 and 2

d ) Mk5 did not extract the ftp portion of any of the scans for Torun; tried unsuccessfully to manually extract the data afterwards. The correlation did not work as the byte offset corresponding to the correct timestamp was not found.

e ) Heavy snow in Nanshan, Urumqi, bad RFI in BBC 1. Could not find p-cal signal in spectrometer, the case is unknown so far.

f) BBC 13 and BBC 12 LSB were swapped for first two ftp scans, thus no fringes in those BBCs. Svetloe has swapped BBC12 and 13 cables to sampler unit for the next experiment. Fraction of high to low bits too high (~60%) in BBC 5 USB/RCP

g) Problems sending data/firewall issue preventing ftp at start of experiment, which was solved quickly (thanks to Paul Boven).