A standard sample is kept in the magnet at all times and the spectrometer should
be in locked mode with the sample spinning. You must remove this sample from the
spectrometer before inserting your sample!!! To do so press the button labeled "acqi"
on the far left of the upper-most menu bar as shown below.
A new window will appear with controls for ejecting and inserting samples as well
as locking and shimming, as shown below.
Clicking the LOCK button will open a screen which is shown below. This screen is
the one which wil be used for establishing the lock condition.
To eject the sample it is best to first turn off the sample spinning by first clicking
the SPIN: off choice in the upper left corner. While not strictly neccesary, this
keeps the sample from rotating as it ejects and lessens the chance of it breaking.
It also makes the subsequent new sample insertion easier by allowing the sample
to sit fully down in the probe.
Next, click the LOCK: off choice to disable the lock. Again, while not strictly
neccesary this keeps the machine from trying to establish lock while you change
the Z0 if you are inserting a sample in a different solvent. The machine will display
the message LOCK OFF.
Now, click the SAMPLE: eject choice. The sample will eject out the top of the magnet.
CAREFULLY remove the sample from the bore tube and place your sample in the bore
NOTE: you must have previously positioned the sample in a spinner turbine at the
appropriate level according to the depth gauge (see separate page on sample prep).
Make sure your sample is supported by the eject air stream before letting go and
walking back to the console.
Click the SAMPLE: insert choice to lower your sample into the probe. You should
hear a distinctive "click" as the sample engages in the probe.