If the tab Modify Devices is selected a list of the available devices will appear. The Temperature Controller device can be selected and a button Modify will be available.

By hitting the button Modify, a first dialog appears giving the possibility either to change the setpoint(s) (Modify Temperature) or modify the setup (i.e. when changing holder or cryostat; Modify Setup).
Also the user has the possibility to put the controller in the Control or Monitor mode.
The button Reset Average may be used to reset the calculated average temperature during a run.
If the checkbox Update Title is active, the temperature setpoint in the title of the run will be updated by the present temperature controller when a new setpoint is choosen. Also the temperature average values calculated by the present temperature controller will be written in the header of the run (if correctly set in the MIDAS database – usually done by the Instrument Scientist). Note that the user should ensure that no other temperature controller will update the run title.

First dialog to modify the temperature setpoints(s) or setup of the LTC20/LTC21 temperature controller.

When modifying the temperature setpoint(s) a second dialog will appear with the currently set and the modified setpoint(s), the temperature range(s) and time(s) for the stability criterium. The values can be modified in the table and changes will be applied by pressing the button OK.

Second dialog to modify the temperature setpoints(s).

To modify the setup of the controller (for example when changing the sample stick) the button Modify Setup has to be pressed. A "wizard" dialog will appear with a drop-down list on the first page giving the possibility to choose the new sample stick.

Dialog to choose the new sample stick.

By hitting the button Next, the second page will appear where the configuration can be choosen (1 or 2-loop mode, etc...). By choosing the corrected entry, the setup can be finished by hitting the button Apply & Exit.

Dialog to choose the configuration for the new sample stick.

At this point the temperature controller should be configured with the corresponding parameters, and a new setpoint may be set.