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Glossary
ZEISS
EHT
Extra High Tension
EIGA
European Industrial Gases Association
EM server
A server that implements the internal
communication between control soft-
ware and microscope hardware.
EMC
Electromagnetic Compatibility
EMO
Emergency Off
Eucentric
Type of stage, the rotation axes of which
intersect in the same point. The specimen
surface is located in the eucentric point,
where the tilt axis meets the beam axis.
This guarantees that the focus is main-
tained when the specimen is tilted at a
certain working distance.
Extractor
Positive electrode that attracts electrons
from the filament.
Faraday cup
Small insulated metal container,
equipped with an aperture where elec-
trons can enter but not escape. Used to
measure the specimen current in the mi-
croscope.
FESEM
Field Emission Scanning Electron Micro-
scope
Focus wobble
Function that sweeps the focus of the
objective lens backwards and forward
through the focus on the specimen
plane. When the aperture is misaligned a
lateral shift is observed.
GIS
Gas Injection System
GUI
Graphical User Interface
H
Height
HD
High Definition, an imaging component's
or technique's attribute of yielding an in-
creased amount of information per area
compared to concurrent components or
techniques
HDAsB
High Detection Angle-selective Backscat-
tered
HDBSD
High Detection Backscattered Electron
Detector
HV
High Vacuum
IGC
Industrial Gases Council
IGP
Ion Getter Pump
IR
Infrared
MSDS
Material Safety Data Sheet
Operator
A trained person, who is assigned to op-
erate the microscope. Basic operator:
Person who has been trained to perform
fundamental operation sequences. Ad-
vanced operator: Technically skilled per-
son who has in addition been trained to
perform basic maintenance tasks.
OptiProbe
Optional function which allows you to
continuously adjust the probe current.
PC
Personal Computer
PE
Protective Earth (ground)
PE
Primary Electron
164
Instruction Manual ZEISS SIGMA series | en-US | Rev. 7 | 352102-9344-006