Operating The Vga Optica; Operating The 4X40 Optica - GE Optica Operator's Manual

Chapter 3. Operation

3.3 Operating the VGA Optica

The parameters chosen during programming are displayed numerically in the top half of the screen, and graphically at
the bottom (see Figure 23 below). To program the unit, see Chapter 4. "Programming the VGA Optica".
A balance indicator is shown as a vertical bar on the right side of the screen. It shows the state of the feedback control
loop controlling the mirror temperature. When the system reaches steady-state (the Control status indicator is
displayed), the balance indicator should be near the center of its range. If the balance indicator is near the top or bottom
of its range, the dew point sensor may need to have its optics signal level adjusted (see "Minor Maintenance of Sensor
Optics" on page 75).
Figure 23: Typical VGA Display Screen

3.4 Operating the 4x40 Optica

The parameters chosen during programming are displayed numerically on the top three lines of the display. For
programming, see Chapter 5. "Programming the 4x40 Optica". A typical 4x40 display screen is shown below. The
system status is shown at the lower left, and the balance indicator is shown at the lower right.
Tdew ° C 8.47996 Heat
%RH 10.3 Cool
Tmp ° C 25.355 Pacer
Control
Figure 24: Typical 4x40 Display Screen
28 Optica™ Operator's Manual