Waters 2489, Operator'S Manual

Page: 79 / 234

Using the operator interface 3-11
4 – See 0-9 above. System Info – Displays
system information including
firmware version and
instrument serial number.
6 – See 0-9 above. Contrast – Permits
adjustment of contrast
(viewing angle) of the liquid
crystal display.
0 – See 0-9 above. Cancel – In some modes,
Cancel backs out of a prompt
without completing the task.
The word “Cancel” appears as
a cue in the lower-right border
of the message text.
• – Enters a decimal point.
Also positions the cursor at
the last entry in a list.
+
/– – Some edit fields accept
negative number entry. Use
this function to invert the sign
of the number in the active
field.
CE – Clears an editing
change, and returns the
contents of a field to its
previous value. Sets the value
to a unique word for some
fields. For example, in the
voltage offset diagnostic
display, you can enter either a
numeric offset value or press
CE to change it to OFF. Clear Field – Clears the
current entry field before you
enter the desired values.
Enter – Completes the entry in an edit field. Also advances the
active field as if the Down arrow had been pressed (except
after editing the wavelength on the absorbance screen). Press
Enter to acknowledge error messages and other prompts. In
these cases, the word “Enter” appears as a cue in the
lower-right border of the message text.
Detector keypad description
Key
Description
Unshifted Shifted
System Info
4
Contrast
6
Cancel
0
+/–
•
Clear Field
CE
Enter