Waters 2489 - Page 87

Using the operator interface 3-19
Primary and secondary function (method) parameters
Function Screen Type Units Range Default
λ
(Wavelength)
1
(Absorbance
screen)
Numeric nm Integer 190 nm to
700 nm
254 nm
AUFS 1 Numeric AUFS 0.0001 to 4.0000 2.0000
Analog rate 2 (of 4) or
2 (of 5)
Choice Hz (λ): 10, 20, 40, 80
(λλ): 1 or 2
10
1
Filter time
constant
2 (of 4) or
2 (of 5)
Numeric Sec Slow
Normal
Fast
Other:
(λ): 0.0125 to 5.0
(λλ): 0.5 to 5.0
0 to disable
filtering
Normal
(for Other:)
1.000
Data out
(single λ)
3 (of 4) Choice None Absorbance A Absorbance
A
Data out (dual
λ)
3 (of 5) Choice None Absorbance A
Absorbance B
Maxplot A, B
Difference A-B
Ratio A/B
Absorbance
A
Auto zero on
inject
3 (of 4) or
3 (of 5)
Check
box
None Selected/
Not selected
Checked
Auto zero on λ
changes
3 (of 4) or
3(of 5)
Choice None To baseline
To zero
Disable
To zero
Voltage offset 4 (of 4) or
4 (of 5)
Numeric mV Integer –2000 to
2000
0
Chart polarity 4 (of 4) or
4 (of 5)
Choice None +
–
+
Minimum AU 5 (of 5) Numeric AU 0.0001 to 4.0000 0.1000