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FIGURE 2-2. TYPEWRITER KEYBOARD
FIGURE 2-3. OPERATOR CONSOLE KEYBOARD
A Security Key lock feature is provided as an optional feature to prevent unauthorized
operation of either keyboard. Although the cursor appears on the screen when this
feature is installed, the keyboard is inoperable unless the key is turned in the key lock
where it must remain for the duration of keyboard operation. The Security Key lock is
located on the righthand side of the keyboard.
The operation of the Audible Alarm feature has been expanded to include these
additional functions:
•
Indicates that the operator has attempted to enter data while the system is in
the INPUT INHIBITED mode.
•
Indicates that the operator has attempted to tag a non-selectable field using
the selector light pen.
•
Indicates that the operator has attempted to enter non-numerical data into a
program defined numerical field.
Although the status INPUT INHIBITED appears on the screen when a keyboard entry
is not accepted, the sounding of the alarm alerts the operator to discontinue entry at
the exact point where input is inhibited should the operator fail to see the status
1377.20-01-3/76
2-3
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