These logs provide data with a sampling interval much smaller than the vertical resolution of the seismic data.

This means a huge resistance at the input takes longer to measure than a low resistance, which results in asymmetrical sampling intervals.

Let's , Where is the sampling interval and is the sampling frequency.

The researcher must ensure that the chosen sampling interval does not hide a pattern.

If , then is significantly larger than the sampling interval, and .

Instead of impulses, usually the sequence of numbers update the analog voltage at uniform sampling intervals.

To accomplish this, at the end of each sampling interval over which the averaging is performed, the following sums are evaluated:

The first use of a multilevel "eye pattern" to adjust the sampling intervals (a new, and important, instrumentation technique)

The format is based on successive digital frames of 1152 sampling intervals with four possible formats:

Users of can specify a sampling interval which permits observing system activity in near-real time.