Agilent Technologies 1220 Infinity II LC User Manual

174 1220 Infinity II LC System User Manual
9 Test Functions and Calibration
Diode Array Detector (DAD)
Slit Test
The slit test verifies correct operation of the micromechanical slit. During the
test, the slit is moved through all slit positions while the detector monitors the
lamp intensity change. When the slit position is changed, the intensity drop
(move to smaller slit) or intensity increase (move to larger slit) must be within
a defined range. If the intensity changes are outside the expected range, the
test fails.
Slit Test Evaluation
Limit: 0.7 - 1.3 (for standard flow cell)
Test Failed
Probable cause Suggested actions
1 Flow cell still installed.
Remove the flow cell.
2 Old or non-Agilent lamp.
Run the “Intensity Test” on page 177.
Exchange the lamp if old or defective.
3 Defective slit assembly (stray light).
Exchange the slit assembly.
4 Defective detector main board.
Exchange the detector main board.
5 Defective PDA/optical unit.
Exchange the optical unit.

Agilent Technologies 1220 Infinity II LC Specifications

General

Brand	Agilent Technologies
Model	1220 Infinity II LC
Category	Laboratory Equipment
Language	English