Accessing The Attenuators; Adjusting The Attenuators - Thermo Scientific Surveyor PDA Plus Hardware Manual

Accessing the Attenuators

Adjusting the Attenuators

Thermo Scientific
The controls for the attenuators are located on the front panel of the detector behind the flow
cell cover.
 To access the attenuators
1. Open the front doors of the detector.
2. Unscrew the captive screw and remove the flow cell cover (see
The attenuators are located on the right side of the front panel. There are two black tabs
attached to the attenuators for manual adjustments (see
The left tab is the deuterium lamp attenuator and the right tab is the tungsten lamp
attenuator. Pushing the attenuator tab up increases light output and pulling the tab down
decreases light output.
Figure 73. View of the attenuators
 To adjust the attenuators
1. Return to the Display page.
2. Adjust the attenuator with the left tab on the PDA (UV attenuation) to achieve a
Channel A value of between 750000 and 775,000 intensity counts.
3. Adjust the attenuator with the right tab (Visible attenuation) to achieve a Channel C
value of between 750000 and 775000 intensity counts.
4. After you finish adjusting the attenuators, replace the flow cell access cover and close the
front doors of the detector.
5
ChromQuest Diagnostics for the PDA Detector
Adjusting the Light Output from the Lamps
Figure 13
Figure 73).
Surveyor PDA Plus Detector Hardware Manual
on page 16).
Deuterium
attenuator
Tungsten
attenuator
83