9 Technical Data and Conformity | 9.3 Performance Data and Specifications | GeminiSEM 460
ZEISS
Parameter
Description
Focus
Working distance:
Range from 0.1 mm – 50 mm, depending on op-
erating conditions
Control:
Coarse and fine with control sensitivity related to magnifica-
tion.
Automatic focus control
: Automatic coarse and fine focus control
Focus compensation:
Automatic compensation to minimize focus
changes over the entire acceleration voltage range.
Dynamic focus:
For correction of focus on tilted specimens.
Automatic focus wobble:
For automatic assistance in aperture
alignment, with adjustable amplitude and speed.
Rotation compensation:
Automatic correction of apparent image
rotation with changes in working distance.
Stigmator
Type:
Eight pole electromagnetic.
Apertures
Number:
One single aperture with compensated alignment depen-
dant on probe current settings.
Beam shift
For precise adjustment of image position at high magnifications.
Width:
200 µm (±100 µm) at 20 kV and WD = 8.5 mm
Specimen Chamber
and Stage
Parameter
Description
Specimen chamber
dimensions
§
360 mm inner diameter
§
270 mm height
Free accessory
ports
12 accessory ports on the chamber are provided, four of them for an-
alytic applications with take-off angle of 35°
Analytical working
distance
8.5 mm
Specimen stage
Type:
5-axes motorized eucentric, controlled via the SmartSEM user
interface, operated by a dual joystick control box
Mounting:
Drawer-type door
Movements:
§
§
Z = 50 mm
§
T = −4° to 70°
§
§
3 µm repeatability in X/Y at 0° tilt
INFO:
The movements may be reduced by specimen size, operating
conditions, and accessories attached.
Accessory ports:
Two accessory ports on the stage door are pro-
vided
Specimen weight:
Up to 0.5 kg
Specimen current monitor
with integrated
Touch Alarm
(Audible
touch alarm warning with on-screen message)
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Instruction Manual ZEISS GeminiSEM series | en-US | Rev. 2 | 349500-8138-000