Slit Test; Slit Test Evaluation - Agilent Technologies 1260 User Manual

9
Test Functions

Slit Test

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

Slit Test Evaluation
Limit: 0.7 - 1.3
Test Failed
Probable cause
1
2
3
4
5
166
Flow cell still installed.
Old or non-Agilent lamp.
Defective slit assembly (stray light).
Defective detector main board.
Defective optical unit.
Suggested actions
Remove the flow cell.
Run the "Intensity Test"
the lamp if old or defective.
Exchange the slit assembly.
Exchange the detector main board.
Exchange the optical unit.
Agilent 1260 Infinity DAD and MWD User Manual
on page 170. Exchange