4
III. OPERATION
A.
Front Panel Controls
This section describes all operational controls located on the front panel of
the NCA-200 (Figure 2).
1. Power Switch
This is a push on/push off switch that applies line power to the unit.
Power-on is indicated by the illumination of the digital display.
2. Digital Display
When setting temperature with the Warm Temp/Cool Temp set controls,
the display indicates temperature with a "C" to indicate degrees Celsius.
"S" indicates time in seconds, presented when the flow time is being
displayed. The default settings on power-up provide selection of the
cool stimulus and display of the cool stimulus temperature.
3. Warm (orange) or Cool (blue) Temperature Select Controls
The warm or cool temperature select buttons allow the operator to select
the stimulus (warm or cool) by depressing the associated pushbutton.
Temperature selection will be indicated by the illumination of a green
light adjacent to the temperature select button. The digital display will
present the actual corresponding temperature. Once a temperature has
been selected, it takes no more than 60 seconds for the system to come
to equilibrium at the new temperature.