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| State | DEV_VOID | DEV_STATE | OPERATOR | This command gets the device state (stored in its device_state data member) and returns it to the caller. |
| Status | DEV_VOID | CONST_DEV_STRING | OPERATOR | This command gets the device status (stored in its device_status data member) and returns it to the caller. |
| Ramp | DEVVAR_FLOATARRAY | DEV_VOID | OPERATOR | Change temperature at a controlled rate. When ramping down in temperature, if the selected rate is too fast for the Cryostream Cooler to follow, the Controller will automatically enter the RAMP / WAIT mode (this will be indicated on the screen). The effect of this is to stop the ramp in order for the gas temperature to catch up to within 5K of the gas temperature. |
| Cool | DEV_FLOAT | DEV_VOID | OPERATOR | COOL is designed to get the system as cold as quickly as possible. It uses a flow rate of 10 l/min to draw the maximum amount of liquid out of the Dewar. This is called Machine Turbo and is indicated by the TURBO lamp flashing on and off. Once the system is cold the flow rate will drop to 5 l/min above 90K. To maintain 10 l/min, press the TURBO button so that the lamp remains on permanently. |
| Plat | DEV_USHORT | DEV_VOID | OPERATOR | Maintain temperature fixed for a certain time. |
| Hold | DEV_VOID | DEV_VOID | OPERATOR | Maintain temperature fixed indefinitely. |
| Purge | DEV_VOID | DEV_VOID | EXPERT | This function is designed to warm up the Coldhead as quickly as possible. It applies maximum power to the three heaters in the Coldhead to get to 300K as quickly as possible. The PURGE is replaced by a SOAK as the heaters run for a further 10 minutes. |
| End | DEV_USHORT | DEV_VOID | OPERATOR | The System will get back to a final temperature of 300K at the given RampRate and then the system is shut down. This is the controlled way to finish an experiment and should be used whenever possible. Once an END function has been programmed, it is not possible to enter any more phases. The only options available are to load or save a program or delete the last phase. |
| Pause | DEV_VOID | DEV_VOID | EXPERT | Temporarly hold the temperature fixed until RESUME is send. |
| Resume | DEV_VOID | DEV_VOID | EXPERT | Resume with the current program after PAUSE was send. |
| Stop | DEV_VOID | DEV_VOID | OPERATOR | Emergency stop, please do not use in normal operation. |
| Restart | DEV_VOID | DEV_VOID | OPERATOR | Restart a Cryostream which has shutdown. |