Torrey Pines Scientific, Inc.
12
PUSH BUTTONS
Two push buttons are provided on the front of the unit for user input. One button is labeled
with an UP ARROW and the other with a DOWN ARROW. When the buttons are pressed,
an audible beep will occur. The keys also have tactile feedback when they are depressed.
Using the buttons to set all of the parameters of the IC22/IC22XT is accomplished via
single and double key presses as well as press-and-hold double key presses.
Single key presses are accomplished by briefly pressing and releasing an UP ARROW or a
DOWN ARROW button. If a single button is pressed and held for 2 seconds, the setting
will increase or decrease rapidly depending on the button pressed. For example, in the
main IC22/IC22XT LCD display, briefly pressing and releasing the UP ARROW will
increase the set point temperature by 1C with each press. If the UP ARROW is pressed
and held down, the set point will increase by 1C after the first press but after holding for
2sec the set point temperature will rapidly increase until the button is released or until the
maximum set point for the unit is reached.
A double key press is accomplished by simultaneously pressing and releasing both UP
and DOWN ARROW buttons. For example, in the main IC22/IC22XT LCD display,
briefly pressing and releasing both arrows will toggle between control of the front or
back plates. When the arrow cursor is after the “F” on the bottom line of the
display(“F>”),single key presses will increase or decrease the set point of front plate.
Likewise, performing a double key press that results in the cursor moving to after the “B”
on the top line of the display(“B>”), single key presses will then increase or decrease the
set point of back plate.
A press-and-hold double key press is described as simultaneously pressing and continuing
to press both UP and DOWN ARROW keys for approximately 3 seconds. For example, in
