JEOL 8200 EOS Electron Optical System Monitor

Launch EOS Monitor

On JEOL EPMA Main Menu, Monitor, Select EOS Monitor

Filament Button

Filament set at standby of 90

Filament set at typical saturation level

Auto Filament Saturation Window

Accelerating Voltage

Condenser Lens Control – Probe Current Control

Scan Control (launched from Signal, Mode, and Speed Buttons)

Magnification Control

Probe Diameter Control – Beam Diameter in microns

Objective Lens Control – DAC Values not readily understood by humans

Right Hand Side of EOS Monitor

Alignment

Contrast and Brightness Control

Collector Control – Secondary Electron Collector Voltage Control

Shift Control – Centering of Electron Beam with Probe Scan turned on

Spot Control – Position of SGSP Green Cross Hair on OS-9 Monitor

Rotation Control – Scan Rotation Value