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MODEL 2234 DIGITAL FLOW COMPUTER ___________________________
3.4
BASIC KEYBOARD/DISPLAY FUNCTIONS
3.4.1 SELECTING TEMPORARY OR PERMANENT DISPLAY
The display of the computer mnemonics and the operator-entered values are
temporary during startup. A "power-save" feature is used by the computer to cause
the display to remain on for a minute and then be replaced by a blinking
asterisk(*). The asterisk indicates that a term or value is in the display memory.
Recall the term to the display by pressing the DSPY (Display) key.
The temporary display of terms and values can be changed to a permanent display
(display always ON) after startup.
Press 1, then CMD to cause the display to remain ON. Press 2, then CMD to
return the display to the "timeout" mode if desired.
3.4.2 VALIDITY CHECKS OF DATA ENTRIES
The computer compares each operator entry with preprogrammed range and format
requirements. An unacceptable entry causes the computer to display one of several
terms: INVALID, RANGE ER, (Range Error), TOO HIGH, TOO LOW or else to
repeat the mnemonic term for the parameter.
Enter a new, valid parameter (or
Read Code number). The range requirements are described in paragraph 3.6 as part
of the instructions for accessing data.
SECTION 3
75
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