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Troubleshooting and Test Functions
4
1100 Series FD Reference Manual
117
Dark-Current Test
The dark-current test measures the PMT signal with maximum and minimum
gain while the lamp is off. It also reads the signal of the reference diode. The
resulting values (two via reference diode and two from PMT) are shown in a
table and checked against reasonable limits (see below).
Dark-Current Test Evaluation
Test Failed
Probable Causes
•
Defective PMT.
•
Defective reference diode or A/D converter
Suggested Actions
✔
Exchange the PMT.
✔
Exchange the FLF board
Figure 45
Dark-Current Test
Summary of Contents for 1100 Series
Page 1: ...s1 Agilent 1100 Series Fluorescence Detector Reference Manual Agilent G1321A Asset 304025 ...
Page 12: ...12 1100 Series FD Reference Manual ...
Page 58: ...60 1100 Series FD Reference Manual 2 First Steps with the Fluorescence Detector ...
Page 126: ...128 1100 Series FD Reference Manual 4 Troubleshooting and Test Functions ...
Page 260: ...262 1100 Series FD Reference Manual 7 Introduction to the Fluorescence Detector ...
Page 324: ...326 1100 Series FD Reference Manual 9 Introduction to the Control Module ...
Page 340: ...342 1100 Series FD Reference Manual A Safety Information ...
Page 345: ......