Hitachi manual Control Knobs and Switches on Main Unit Main unit Column, S-4800 Main Unit type

2.1Control Knobs and Switches on Main Unit

2.1.1Main unit (Column)

Fig. 2-2 shows the appearance of the S-4800 main unit (type I).

Electron gun

Gun valve

Anti-contamination trap dewar

Secondary electron detector (Lower)

Specimen stage

Beam monitor preamplifier

Beam monitor aperture

Secondary electron detector (Upper)

Objective movable aperture

Specimen exchange device

Evacuation control panel

Fig. 2-2 S-4800 Main Unit (type 1)

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