If a macro cannot be stopped, it may interfer with another one. Try to interrupt both by using "abort". If acquisiiton times are long, this can take a few minutes. It might be quicker to stop (ctrl-C from the command window) and restart "UMeasure".

The undulator cannot be moved, i.e. you cannot set gap and phase. The beamline controls window shows that the undulator status is different from "3" (which means "ready"), indicating that the communication with the beamline control system works. The undulator is "stuck", because of a well-known problem with its encoders. Abort any macro (if running) and call the control room (8262). Kindly ask the operator to move the undulator for you to the desired settings. This operation resets the readout of the undulator encoders, so that afterwords you will be enabled to move the undulator from the beamline.

The beamline paramters cannot be visualised. Try this: go to the options menu and select "BCS communication/Online". If the problem persists, try "BCS communication/Offline" and wait 5 minutes, in order to let the BCS server to restart automatically. Then go "Online" again. If the beamline is still not reponding, the beamline control system (BCS) is down (see next!).

The beamline controls system (BCS) is down. Quit all programs which send commands to the BCS, i.e. "UMeasure" and "BCSjava". Check that out on all beamline computers. Then wait at least for 5 minutes. This will allow the BCS to automatically restart the TCP/IP server, which crashed. If this operation is not successful, the BCS computer needs to reboot. This operation has to be performed by the beamline personnel.

"Damn, there was a discharge in the microscope!" During a discharge the start voltage goes to 500 V, to protect the detector. Furthermore, the voltage of the analyser lenses might need to be reset. This can be done, from LEEM2000 by selecting the the tools menu and clicking on the "refresh HV rack" menu item. If is also necessary to reset the HV to -18000 V in the microscope HV rack.