Teledyne 9110T instruction manual Manual

Model 9110TH NOx Analyzer Data Acquisition System (DAS) and APICOM

7.1.3.2. Editing DAS Triggering Events

Triggering events define when and how the DAS records a measurement of any given data channel. Triggering events are firmware-specific and a complete list of Triggers for this model analyzer can be found in Appendix A-5. The most commonly used triggering events are:

∙ATIMER: Sampling at regular intervals specified by an automatic timer. Most trending information is usually stored at such regular intervals, which can be instantaneous or averaged.

∙EXITZR, EXITSP, and SLPCHG (exit zero, exit span, slope change): Sampling at the end of (irregularly occurring) calibrations or when the response slope changes. These triggering events create instantaneous data points, e.g., for the new slope and offset (concentration response) values at the end of a calibration. Zero and slope values are valuable to monitor response drift and to document when the instrument was calibrated.

∙WARNINGS: Some data may be useful when stored if one of several warning messages appears such as WTEMPW (GFC wheel temperature warning). This is helpful for troubleshooting by monitoring when a particular warning occurred.

To edit the list of data parameters associated with a specific data channel, follow the instruction shown in Section 7.1.3 then press:

Note	A full list of DAS Trigger Events can be found in Appendix A-5 of this
	manual.

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