Contrast (Contr); Noise Filter (Flter); Noise Filter Bypass (Bypas) - FlowLine LI25 Series Instruction Manual

LI25 Series Loop-Powered Meters Instruction Manual

Contrast (contr)

LCD contrast is adjustable through the front panel buttons. Select contr
and increase level using Up Arrow/Max button. Settings 1 through 9 will
be displayed on the screen as 11111 to 99999. Settings 1 through 4 are
usually best when viewing from below the angle perpendicular to the
display. Settings 5 through 9 are usually best when viewing straight on
(meter is at eye level) or when viewing from above.

Noise Filter (fltEr)

Most applications do not require changing this parameter. It is intended
to help attain a steady display with an unsteady (noisy) input signal.
The field selectable noise filter averages any minor or quick changes in
the input signal and displays the reading with greater stability.
Increasing the filter value will help stabilize the display, however this will
reduce the display response to changes on the input signal.
The filter level may be set anywhere from 1 to 199.

Noise Filter Bypass (bypAs)

The meter can be programmed to filter small input changes, but allow
larger input changes to be displayed immediately, by setting the bypass
value accordingly.
If the input signal goes beyond the bypass value, it will be displayed
immediately with no averaging done on it.
The noise filter bypass value may be set anywhere from 0.2 to 99.9. It
corresponds to percentage of full scale.
Increasing the bypass value may slow down the display response to
changes on the input signal.
Pressing the Right Arrow/Reset button will also bypass the filter and
provide an instant update.
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