Zeiss EVO - Choosing the Lab₆ Mode

ZEISS 5 First Operating Steps | 5.4 Acquiring an Image
à In the right part of the Status Bar, the vacuum, gun and EHT status buttons merge to
.
5.4.6 Choosing the LaB₆ Mode
SmartSEM offers two modes for running the LaB₆ filament:
§ Normal mode for ultimate resolution
Normal mode is mainly used by experienced users to achieve the ultimate resolution and/or
to have continuous control of the beam settings. The filament lifetime will however be gener-
ally reduced in this mode, due to the use of relatively high acceleration voltages, beam and fil-
ament currents (up to 30kV, 40µA and 2.050A).
§ Long Fil. Life mode for longer filament lifetime
Long Fil. Life mode has a slightly reduced resolution but the filament lifetime is increased
due to the use of lower filament currents (around 1.950A). The Long Fil. Life mode is the
preferred mode for most applications.
Procedure
1. Toggle the Long Fil. Life checkbox to switch
between the two modes.
INFO: This applies to both LaB₆ variants (1mm
and 1.5mm Wehnelt bore diameter).
Instruction Manual ZEISS EVO | en-US | Rev. 10 | 354706-0780-006 69