4
Xcalibur Diagnostics for the PDA Detector
Controlling the Lamps from the Xcalibur Data System
Thermo Scientific
Accela PDA Detector Hardware Manual
35
Controlling the Lamps from the Xcalibur Data System
As lamps age, they emit less light, which results in increased baseline noise. If the noise level
on your detector signal is unacceptable, and cleaning the LightPipe flowcell does not help, use
the diagnostic features of the software to determine the cause of the problem. If light output
becomes too low and adjusting the attenuators as described in
Throughput with the Xcalibur Data System”
does not help, replace the lamps.
The detector keeps track of the number of hours each lamp has been operating. The
deuterium lamp has a lifetime of approximately 2000 hours and the tungsten lamp has a
lifetime of approximately 2500 hours. Lamp lifetime varies depending on the application (see
“Lamp Lifetime and Detector Noise”
).
Turning On the Lamps
Y
To turn on the lamps
1. Open the Accela PDA Direct Control dialog box (see
“Opening the Accela PDA Direct
).
2. Click the
Configuration
tab.
The Configuration page appears (see
).
Figure 28.
Configuration page of the Accela PDA Direct Control dialog box
