Hi all,
After I posted the previous message about the tcu error I received quite a
lot of replies. Thank you! I tried some suggestions but the problem
remains. More information about it is provided below.
The pulse sequence udeft I tried is from Dr. Martial Piotto, which is
suitable for C13 with long T1. The main part of the ppg is as the
following,
"d11=30m"
"d12=20u"
"d15=0.00301600"
"d20=d1-2*aq-3.01m-d15-2*d6-p11-p12"
"d21=aq+d15+d6"
1 ze
d24 do:f2 ;Set d24 to 5 times longest 13C T1
d11 pl13:f2
30s cpd2:f2 ;NOE build-up
2 d12 pl1:f1
d20
p1 ph1
go=2 ph31
d6
(p11:sp1 ph2:r):f1 ;180 adiabatic refocusing pulse
d21
p1 ph3
0.3u
(p12:sp2 ph4):f1 ;180 adiabatic flip back pulse
d12
lo to 2 times l4
d11 do:f2
d11 wr #0
exit
The pulse sequence is reported to be sucessfully used on Avance with SGU
and Topspin 1.3. My system is also Avance with SGU but Xwinnmr 3.0. When I
tried it I got the error message below,
tcuerror
line 48(pc=100,ld=118) in FCU1(rp=64,wp=75,stat=0*8040): ingored AQNEXT,
busy FIFO is stopped.
In the sequence line 48 is "d12", which is delay for power switching and
gets the default value 20usec.
Some suggested that the error was caused by wrong scon parameters and a
link was mentioned about the bug
http://www.bruker-biospin.com/shell/bkb/show_bug.cgi?id=6788
I tried the suggested scon parameters but it did NOT work. Then I tried the
scon parameters of the dataset from Dr. Martial Piotto ( DE1=5,
DEADC=7,DEPA=5, DERX=6)but still got the similiar error message.
Now I am stuck here. Is anyone able to figure out the problem? Any
suggestions will be appreciated.
Cheers,
Guangyu
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