Winco DPG-2145-001 - Manual (Page 33)

Manual 36526F DPG-21XX-00X Digital Controllers
Woodward 25
Tuning View
The Tuning View panel is displayed only after pressing the <View Chart> button.
The Tuning View panel is part of the Chart View display mode.
To modify a tuning parameter’s current
value, it must first be selected. Do this by
double-clicking the left mouse button on a
cell in the table that is at the intersection of
the
parameter’s row and the Value
column.
The selected cell will be highlighted and
the value can now be modified. When
done modifying the value, press the
computer keyboard’s <Enter> key to
transmit the new value to the controller.
Chart Recorder
The chart recorder is part of the Chart View display mode. Each time Chart View is
entered the last used Data File is reset, the Vertical Scale defaults to [0 Hz to
12000 Hz], and the Horizontal scale defaults to 20 seconds.
The chart recorder’s display characteristics are configured using the Vertical Scale
options, the Horizontal Scale options, and the Chart Recorder Signal Filtering
options.
The Vertical Scale options provide three different ways to view engine speed data.

The [0 to 12000 Hz] option is the default and sets the vertical axis range to
its absolute minimum and maximum measurable values.

The [_____] to [______] Hz option allows you to enter the minimum and
maximum speed values to zoom in on a viewing range of interest.

The +/- 10% of [______] Hz option is primarily used to zoom in on the target
speed and center it in the chart recorder. This is most useful during
controller tuning to see if the engine speed stays within +/- 10% of the target
speed during load on/off cycling.
The Horizontal Scale options allow you to set how much data is displayed in the
chart recorder window. Larger values compress the display and show more data.
Smaller numbers expand the display and show less data. A Horizontal Scale
setting of 20 seconds is approximately the same as a 5-millimeter per second
paper travel speed of a conventional paper tape chart recorder.
The Chart Recorder Signal Filtering options can be used to smooth out noisy
signals. The default setting is Min, which is no filtering. Note that filtering will round
out peaks and give a less accurate display of the speeds actually measured by the
DPG.