Re: modulation of spin rate???

Charles G. Fry (fry@chem.wisc.edu)
Wed, 31 Jul 1996 12:43:53 -0500

Bruker Users,

Guess I should go ahead and ask the naive question, since I was
totally unaware of the RO function on Bruker spectrometers: what
is the utility of having variable spin rate? I thought it might
be to "blur" spinning sidebands when looking at very low intensity peaks
close to a solvent peak, for example; but not only could the spin rate
be changed to get around this (I think a better solution), but on our
AC's the variable rate change is so slow as to still give clean
sidebands during a nominal AQ.

Is there some application that I am not seeing where this function
becomes valuable?

>Turning on or off the variable spin rate can be done with the "RO"
>command in DISNMR. After typing RO, the computer asks if you want
>spinning on or off, then what the spin rate should be, and then if
>you want it to be variable. I don't know of a way to change this
>condition woth the keypad.
>Henry
>>
>> What keystrokes on the SCM unit are used to program it to triangle-wave
>> modulate the sample spinning rate, and how do you _DEPROGRAM_ it?
>>
>> ---------------------------------------------------------------
>> Gerald A. Pearson INTERNET: gerald-pearson@uiowa.edu
>> Chem. Dept., Univ. of Iowa OFFICE: 319-335-1336
>> Iowa City, IA 52242-1219, USA LABS: -1332, -0073 FAX -1270
>> ---------------------------------------------------------------
>>
>>
>==============================================================================
> . o . .
> . . . . Henry Luhrs
> . . . . hcl@bruker.com
> B R U K E R
> . . . . Phone 508-667-9580 Ext 329
> . . . . Fax 508-667-6406
> . o . .
>==============================================================================

----------------------------------------------------------
Charlie Fry Tel: (608)262-3182
Director, MR Facility Fax: (608)262-0381
Chem. Dept., Univ. Wisconsin
Madison, WI 53706 USA email: fry@chem.wisc.edu
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