Elekta Neuromag NM21283A, Руководство пользователя

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Basic measurements 8
NM21283A-A 45
button” is changed to “Stop collector”. Another press will then stop the
acquisition and release the acquisition front end.
The measurement system must be idle to start new measurements using
the normal acquisition program. It is not necessary (but recommend) to
exit the Tuner in order to use acquisition, but the measurement must be
stopped into idle mode.
8.3 Measurement parameters
Each measurement or job has a set of parameters associated to it. These
affect the exact details how some operation is performed. Typical exam-
ples are sampling frequencies and number of averages taken. The default
values are adjusted to be good for normal usage, but some times it is use-
ful to be able to adjust them. In addition to measurement parameters, pro-
gram uses also various other parameters for defining operating points,
preferences etc.
The following sections describing a job also describe the associated
parameters. For a complete list of all parameters see Appendix B.
The parameters can be adjusted using dialogs that can be accessed
through the
Parameters
menu. They are classified using two classifica-
tion schemes: parameter sets and classes. The parameter set defines which
parameter dialog is used to edit them, and the class defines the general
context in which the parameter is used. Typical sets are e.g. “Noise mea-
surements” and “Tuning settings”, containing the parameters affecting the
noise measurements, and fine tuning. Typical classes are e.g “Measure-
ment parameters” and “State parameters”, giving instructions to measure-
ment routines and describing operating point settings.
To change a parameter value:
1. Select the button corresponding the parameter set of the parameter in
the Parameters menu.
2. Edit the value in the text box by the parameter name and press
RETURN
.
3. Close the parameter box.
Closing the box is not necessary since the values are changed immediately
when
RETURN
is pressed.