You can use the absolute time stamp of the real-time system for the X-axis. You can also use a relative time from the start of chart recording for the X-axis.

Table 42. Time Stamp Type
Type Activation Advantages Disadvantages
Absolute time In the Properties dialog on the X-Axis tab, activate the Use absolute time stamp. The times of messages from the runtime system and certain events that may occur in the graphics window match. If the PXI controller is synchronized with a time server, inconsistencies in the absolute time will occur at the time of synchronization. Make note of the time especially for long-term measurements.
Relative time In the Properties dialog on the X-Axis tab, deactivate Use absolute time stamp. The X-axis describes a continuous course without jumps. Establishing a relation between the following is difficult:
  • Course of the chart
  • The occurrence of events that are written to the message window or logbook
Note If you change between absolute and relative time, all previously displayed data points will be lost.