Elapsed Time Table Logging

Summary

Elapsed Time table logging instructs the equipment to log at specified time intervals.  Humboldt equipment will accept up to 25 logging intervals.  At each interval specified the equipment will record a data point.

A common misconception is that the equipment/test is limited to logging at only those 25 specified time intervals when in fact the logger will continue to record past the last time span difference of the last two non-zero time entries.

Requirements

• First time entry can't be zero.  A zero time entry is recorded when the test triggers.
• A minimum of two time entries are required.
• A zero time entry between two time intervals is NOT allowed.
• Each time entry should be greater than the previous entry.
• All entries in the time table do NOT need to be completed.

Examples

Example 1:

00:00:30, 00:01:00, 00:02:00, 00:04:00, 00:08:00,

00:15:00, 00:30:00, 01:00:00, 02:00:00, 04:00:00,

08:00:00, 00:00:00, 00:00:00, 00:00:00, 00:00:00,

00:00:00, 00:00:00, 00:00:00, 00:00:00, 00:00:00,

00:00:00, 00:00:00, 00:00:00, 00:00:00, 00:00:00

This time table will log at the specified time increments.  After the 8 hour mark it will continue to record every 4 hours.  The continued recording of 4 hours is determined by computing the time difference of the last non-zero time (08:00:00) and the next to last non-zero time (04:00:00).

Example 2:

00:00:30, 00:01:00, 00:02:00, 00:04:00, 00:08:00,

00:15:00, 00:30:00, 01:00:00, 02:00:00, 04:00:00,

08:00:00, 12:00:00, 16:00:00, 20:00:00, 24:00:00,

00:00:00, 00:00:00, 00:00:00, 00:00:00, 00:00:00,

00:00:00, 00:00:00, 00:00:00, 00:00:00, 00:00:00

This time table will log at the specified time increments.  After the 24 hour mark it will continue to record every 4 hours.  The continued recording of 4 hours is determined by computing the time difference of the last non-zero time (24:00:00) and the next to last non-zero time (20:00:00).

NOTE:  Example 2 uses more time intervals values to produce the same results as example 1.