Switching ON the GCTU
For instruments equipped with GCTU (if unknown, please ask your Bruker SLS office), the unit needs to be permanently switched on to stabilize temperature changes and to reduce magnetic field drifts by heating and stabilizing the temperature of the shim system. However, after a power outage, it is not automatically switched on again. Therefore, the user might need to switch it on.
Start screen of the GCTU 2.
In case the start screen is shown in the display, proceed as follows:
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- Press Access Level selection and select the Access Level 1 followed by the password “full”. It is best to use a pen for keyboard selections on the tiny touch screen.
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- The control panel displayed in level 1 allows the user to switch ON/OFF all the shim heaters. Most other parameters are inaccessible.
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- The control panel appears.
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- In case the channels are not ON, press Ch1 ON to switch ON channel 1.
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- Continue to switch ON the remaining channels, correspondingly.
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- Control Panel Information