4. AT5600 Power on Screen
The AT5600 will then display to following screen
The screen shows
Serial number
Firmware version
Calibration date
Server settings
The Green icon in the bottom left indicated that the safety interlock is closed; i.e. that the unit can generate high voltages.
If this icon is red, then the means the safety interlock is open.
If this is the case, then check the fit of the interlock plug in the rear of the unit.