If this is not the case, the reference voltages can be manually readjusted on the card. If a Datacon fault is encountered on this read operation, a calibration fault status shall be set for this calibration. Limits for values on the second read operation shall be less stringent as the probability of getting the correct sub-address data is high on the second read. A calibration fault status will be set if the second read operation shows invalid data. A converter shall be adjusted with offset values taken from differences between current calibrated measurement readings and latest setpoint values sent.
Monitoring involves comparing setpoints with calibrated measurements at regular intervals.
This operation is repeated until the measurements fall within tolerance or it has been ascertained by the number of tries attempted that the measurements will never fall within tolerance. It differs from monitoring only in that it never aborts the process of trying of get calibrated measurement values to setpoint within tolerance levels. It may temporarily suspend sending adjusted setpoints when measurements oscillate around a setpoint but resumes the cycle when measurements start to drift from the oscillation range. To accomplish this, a closed-loop system of instrumentation devices has also been designed to directly and separately control this particular set of Acme Power Supplies in tandem with the Datacon2 system. The system also includes a beam position monitor of ionized gas which feeds back its normalized sum and difference data to determine the voltage to be added to the relevant Acme Power Supply.