Bruker BioSpin GRASI-1.0, Руководство пользователя

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14 (41) BRUKER BIOSPIN User Manual Version 001
Operation
Amplifier selection 4.1.1
The first step before starting is to select the type of amplifier used with the GRASI
unit. This selection is performed using a dedicated Web page. This action should
be done only by Bruker trained personnel. Choosing a wrong amplifier type can
lead to irreversible damage of the entire spectrometer. The selection is done once
at the first switch on. Once this selection is made, there should be no reason to
select another type of amplifier. If for any reason a change of amplifier type is
made, the type of the previously selected amplifier will be saved for safety
reasons.
Coil code selection 4.1.2
The Coil Code selection occurs automatically when the SUB-D 37 connector is
inserted. The code is detected and in accordance with the selected amplifier, the
different limit values for the power control are set. The control function supported
by the DSP uses these values to check if a limit is overridden.
Powering up 4.1.3
The GRASI Unit is switched on helps the "ON/OFF" button located on the front
panel.
Initialisation process 4.1.4
The initialisation process needs about one minute to be completed. During the
initialisation process, the output channels are calibrated and the offset corrected.
Important : After switching on the GRASI Unit, the switch light lights red. A few
seconds after switching on, the three front panel LEDs light up red and remain
lightened for about one minute. This is the external sign for the operator to
announce initialisation process. Once the three front panel LEDs switched off, the
GRASI Unit is ready for operation. Please note that during initialisation process,
no commands should be sent to the GRASI Unit.
Calibration 4.1.5
Before the device can be used for imaging application, all calibration steps must
be done according to the ParaVision/TopSpin tune-up procedure.
Warning : Danger harware damage. Missing or wrong calibration settings can
lead to destruction of gradient hardware and insufficient image quality.