Teledyne GFC-7001E - Trace CO Analyzer - Manual (Page 114)

Advanced Features Model GFC7001E Carbon Dioxide Analyzer
Teledyne Analytical Instruments 114
7.1.5.2. Editing iDAS Triggering Events
Triggering events define when and how the iDAS records a measurement of any given data channel. 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 occurrs.
To edit the list of data parameters associated with a specific data channel, follow the instruction shown in Section
7.1.5 then press:
NOTE