I want to find out if anybody out there has seen the following problems
on the AMX-600 and AM-250 instruments.
AMX-600: Calibration of the proton pulse is asymmetric. For ex: if HL1=3
and using PAROPT with p1 starting at 1u and incremented by 1u for 32
increments. The 90 maximum is reached early at about 8u and 180 is at
about 20u. The pulse width I usually get is 10u for 90 pulse. I see this
at all different power levels of the proton e-coupler. It is really bad
at low power levels like HL1=40 for a 1ms pulse for saturating water in
watergate sequence. The 90 I get in the last case is at about 700u
instead of 1000u, but 180 is at 2000u. I have tried everything. Please
help.
AM-250: Suddenly we get memory full error after 4 scans and just garbage.
We have rebooted the system, but of no use.
Your responses will be greatly appreciated
Vikram
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Vikram Roongta *
612-624-7620 office *
612-624-7124 NMR lab. *
e-mail roong001@maroon.tc.umn.edu *
office 3-135 Jackson Hall *
Fax: 612-626-2325 *
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