June 11, 2015, 715004752 Rev. A
Page 56
4. To display a choice list, press Enter. Then take one of these actions:
•
Press the corresponding number key to select an item immediately.
•
Use the up and down arrow keys to scroll through the list, and then press
Enter.
Tip:
You can press the numeral that corresponds to a desired choice without
first pressing Enter.
Rule:
The Up and Down arrow keys do not incrementally increase or decrease
numerical field entries. Use the numerical keypad for that purpose.
3.2.3.1
Navigating to and from the absorbance screen
Pressing HOME from most screens causes the absorbance screen to appear. From the
absorbance screen, you can access several secondary functions. To move to the
secondary function screens of the absorbance screen, press Next. These are the
secondary functions:
•
Analog output specifications
•
Time constant
•
Absorbance offset
•
Voltage offset
•
Chart polarity
•
Enable/disable inputs
•
Enable/disable external events
Tip:
The parameters you enter into the secondary function fields become part of the
current method conditions and are stored when you store the method (see
In
single-wavelength mode, the detector displays three additional screens, labeled 2
of 4, 3 of 4, and so on. In dual-wavelength mode, the detector displays four additional
screens, labeled 2 of 5, 3 of 5, and so on (see
).
3.2.3.2
Setting up a run
Once you press HOME, causing the absorbance screen to reappear, and you select a
wavelength mode (
λ
or
λλ
), you can set up the detector for a run. In addition to
wavelength mode, you must program these parameters before beginning a run:
•
Operating wavelength
•
Sensitivity
•
Time constant
•
Analog output sensitivity
Depending on the other functions that you can perform during a run, several other
parameters can require programming. See
and the table on for the function
descriptions, fields, screen number, type of function, display units, allowable ranges,
and the default settings for the absorbance screen and the secondary function
screens.
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