Cryo-con Model 24C Front Panel Operation
Keypad Data Entry
The keypad is used to enter data and make selections in the various configuration
menus. Fields require the entry of numeric or enumeration data.
Enumeration fields are display fields where the value is one of several specific
choices. For instance, the Heater Range field in the Loop 1 setup menu may contain
one of only three possible values: HIGH, MID and LOW. There are many enumeration
fields that contain only the values ON and OFF.
Enumeration Fields
An enumeration is always indicated by the + character in the first column of the field.
To edit an enumeration field, place the cursor at the desired field by using the
Navigation keys. Then, use the + or 0 keys to scroll through all of the possible
choices in sequence.
When a field has been changed, the cursor will flash over the + symbol. To select the
displayed value, press the Enter key. To cancel selection without updating the field,
press the Esc key.
To select the displayed value, press the Enter key. To cancel selection without
updating the field, press the Esc key. The cursor will then return to the + symbol.
Numeric Data Fields
Numeric data is indicated by a pound-sign (#) in the first column of the field.
The Keypad Keys are used to enter data into numeric fields. These keys are: the
numerals 0 through 9, the period key (.) and the +/- key.
When the cursor is positioned to a field that requires numeric data, the keypad keys
become hot and pressing one of them will result in the field being selected and
numeric entry initiated. This is indicated by a flashing cursor.
When the Enter key is pressed, numeric data in the selected field will be checked for
range and the instrument’s configuration is correspondingly updated.
i Note: If the numeric entry is outside of the required range, an
error is indicated by the display of the previous value of the field.
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