Date: Thu, 19 Jan 2017 20:47:50 +0800
dear friends
is there anybody who have met such strange behavior: tuning and matching couldnot be done well for the nucleic at higher frequency, for example, 13C even change probe from 4mm to 7mm? I also changed preamplifier channel, but the same thing happened. anybody have any idea?
junfeng
iccas
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