From: Hans T.H. Beernink <hbeernin@protein.med.uvm.edu>
  To  : RASMB@BBRI.HARVARD.EDU
  Date: Tue, 21 Jan 1997 10:35:49 -0500 (EST)

XL-I noise

Dear RASMBers, 

I'm running into a problem that seems to be common for XL-I users.  That
is, noise in the FFT scans when using the Rayleigh system.  I'm aware that
the low resonance from the frame of the instrument can interfere, but 
we've (supposedly) reduced that by dampening the diffusion pump.  The 
noise is most visible during equilibrium scans.  

Has anoyone else run into similar difficulties, and if so, what solutions 
are around?


Thanks, 
Hans


_____________________________________________________________________________
Hans T.H. Beernink, Department of Biochemistry, University of Vermont

hbeernin@protein.med.uvm.edu			FAX (802)862-8229 
hbeernin@zoo.uvm.edu				Tel.(802)656-8244