# Message 51

## Message

"51. Unable to Characterize Edges: item"

## Description

Sampling level is not in the valid range. The jitter sampling level determines the active sample area for the measurements. The default is a value that is 50% of the logic highs and lows values. If you change this setting above or below the acceptable limits, this message appears. Enter a units value that is inside the minimum and maximum values shown on the message line.

This message is displayed in the message area and is reported as a programming error message.