IsoPrime User’s Guide
Version 1.01 IsoPrime100 User’s Guide Page 95 of 219
electron volts, the voltage on the half plates, Z-plates, extraction and ion
repeller, and the current on the ion trap. Other instrument settings may be scanned by selecting
Other Setting and pressing the Select button.
Scan Type. Choose Start/Stop for a normal scan, Centered for a peak centre scan, which is
centered on the current control setting.
Range. Enter the start and stop values for a start-stop scan, and the width for a centered scan.
Step. This defines the size of the time interval between steps, and the change in the scanned
parameter for each step.
Acquire Map. This specifies the channels to be acquired, if the scan is initiated from this dialog.
Display Template. The user can select a defined template for a scan. Any source parameter or
readback can be monitored during the scan.
Press the Acquire button. Data is not saved to a data file, but the beams displayed in the
defined acquire map will be shown in the peak display window.
The ten most recently run scans may be repeated by selecting them from the acquire menu.
To abort a scan, either press the Stop Acquire toolbar button or select Acquire,
Stop Acquisition.
SETTING UP A PEAK CENTRE SCAN
A peak centre scan is associated with each tuning file. The default scan has a width of
70 V (180 V for hydrogen). To change the scan width, carry out the following steps:
Choose Acquire, Edit Scan, which opens the Scan Setup window.
Select File, Select Peak Centre Scan. Choose one of the peak centre scan
files and press Open.
Change the width. To save the changes to a new file, press File, Save As.
Press the Close button in the scan setup window. Save any changes that were
made to the current file. The selected scan file will now be used for peak centering.
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