Omron ZG User Manual page 161

Sensitivity Adjustment Functions of the ZG Series
The ZG series is provided with three sensitivity adjustment functions.
MULTI sensitivity
The optimum sensitivity is
adjusted for individual line
and combined to form the
image.
AUTO sensitivity
The optimum sensitivity
common to all lines is
adjusted.
FIXED sensitivity
Sensitivity is fixed
for all lines.
ZG User's Manual
The amount of received light per individual
line is judged and the appropriate sensitivity
for each individual line is adjusted to
accommodate for all kinds of shape, color
and material.
The measurement target must be made
stationary as time is required to capture
multiple image frames while changing the
sensitivity.
The amount of received light for all lines is
judged to adjust to the appropriate sensitivity
for the entire area.
As sensitivity is batch-adjusted for all lines,
the response is not as slow as that for
MULTI sensitivity, so this mode is a
generally applicable mode.
In this mode, a predetermined sensitivity is
used. As sensitivity is not adjusted during
measurement, response is fast, making it
ideal for when a trigger is input at short
intervals to perform measurement.
Basic Knowledge for Operation
159