The Instrument Setup Dialog Box's Y Focus Tab - Waters Autospec Premier Operator's Manual

To set a new accelerating voltage limit
1. On the Instrument Setup dialog box's Limits tab, specify the required
value in the Voltage Limit text box.
2. Click Return.
Use the slider bar to enter the required value.
Alternative:
The default value is 8000, maximum value is 8000, and minimum
Tip:
value is 100.
To set a new magnet limit
1. In the Instrument Setup dialog box's Limits tab, specify the required
value in the Magnet Limit text box.
2. Click Return.
Use the slider bar to enter the required value.
Alternative:
The default value is 2300.0, maximum value is 20000.0, and
Tip:
minimum value is 100.0.

The Instrument Setup dialog box's Y Focus tab

Use the Y Focus tab to create a Y-focus calibration table, which specifies
Y-focus lens offsets at specified masses. The resulting table is saved in a
Y-focus (*.ypr) file, specified in the Y Focus Setup Parameter File box.
When opened, the Y Focus tab contains a default table of Y Focus Values. You
can add entries to, delete entries from, and edit existing entries in, this table.
The corrected Y Focus values shown in the table are calculated by adding the
Y-focus correction for each table entry to the current Y Focus setting on the
Tune window's Lenses 2 tab. This forms the Y-focus calibration table, which is
saved into the Y-focus file when the Instrument Setup dialog box is closed.
The masses specified in this table are set using the magnet only. As
Note:
mass can normally be set using the magnet and the accelerating voltage, the
masses are taken to be at full accelerating voltage, that is, 8000 V.
See "Y Focus lens" on page G-5
analyzer resolution)" on page
and "The Lenses 2 tab parameters (for
D-37.
The Tune window Options menu D-17