4 DESCRIPTION OF CONTROLS
EM210F-1
4-25
⑤
Illumination condition when the photographing is performed (
F
Fig. 4.21).
Illumination:
The illumination mode when the photographing is performed
(Left main screen
①
)
Spot:
The spot size value when the photographing is performed (Left
main screen
③
)
Alpha: The
a
-value when the photographing is performed (Left main
screen
④
)
⑥
The magnification, camera length or energy dispersion when photographing
(Left main screen
②
)
⑦
Amount of focus change when photographing (Left main screen
⑤
)
⑧
Accelerating voltage (
F
HT screen
②, Fig. 4.22
)
⑨
Specimen position
4.4.6b High Voltage Control screen
⑤
②
③
①
④
⑥
⑦
Fig. 4.26 High Voltage Control screen
①
HT and Filament mission
HT Status:
“Ready” is displayed when accelerating voltage generation is
allowed and “Not Ready” is displayed when accelerating volt-
age generation is not allowed. “On” is displayed when an ac-
celerating voltage is being generated.
Mission Status:
“Ready” is displayed when electron beam generation is al-
lowed and “Not Ready” is displayed when electron beam gen-
eration is not allowed. “On” is displayed when an electron
beam is being generated.
HT:
The present accelerating voltage value
Dark Current:
The dark current in the high voltage circuit
Mission current:
The electron beam current
Valve buttons
Open:
Depressing this button opens valve V1. The electron beam
reaches the fluorescent screen when the valve opens.
Close:
Depressing this button closes valve V1. The electron beam
stops at the valve when this valve closes.
