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4
Xcalibur Diagnostics for the PDA Detector
Adjusting the Attenuators
58
Surveyor PDA Plus Detector Hardware Manual
Thermo Scientific
To adjust the attenuators while viewing the light intensities
1. Access the attenuators as instructed on
.
2. Open the Instrument Setup view as follows:
a. Open Xcalibur:
• For Xcalibur 2.0 or lower, from the computer desktop, choose
Start >
All Programs > Xcalibur > Xcalibur
.
• For Xcalibur 2.1 or higher, from the computer desktop, choose
Start >
All Programs > Thermo Xcalibur > Xcalibur
.
b. In the Xcalibur Home Page, click the
Instrument Setup
button to open the
Instrument Setup window.
3. Set your chromatographic pump to deliver HPLC-grade water at a flow rate of 1 mL/min
as follows:
a. In the view bar of the Instrument Setup view, click the
Surveyor LC Pump
or
Surveyor MS Pump
button to open the instrument setup view for the pump.
b. Choose
Surveyor LC Pump > Direct Control
or
Surveyor MS Pump >
Direct Control.
The Direct Control dialog box for the pump appears.
c.
Select a solvent bottle that contains HPLC-grade water and set the flow rate to
1 mL/min.
4. Create the display method for the Surveyor PDA Plus Detector as follows:
a. In the view bar of the Instrument Setup view, click the
Surveyor PDA Plus Detector
icon to open the Surveyor PDA Plus Method page.
b. In the Units area, select the
Diode/Intensity
option. This sets the Y- Axis of the
spectra on the Direct Control dialog box – Display page to Intensity and the X-axis
to Diode number.
c.
Verify that the following parameters are specified in the Spectra area of the Surveyor
PDA Plus Method Page:
Start Diode = 2
End Diode = 511
Diode Step = 1
Sample rate = 1
d. Save the display method.
See
“Creating a Display Method to View the Light Intensity”
instructions on creating and saving a display method.