Hitachi Microscope & Magnifier S-3400N 用户手册

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2.3.7 
2 - 41 
2.3.7.3  VACUUM MODE Window 
 
This window can be used to switch vacuum modes and set a vacuum level. 
 
 
 
 
Fig. 2.3-27    VACUUM MODE Window 
 
(1)  Vacuum mode selection control 
This control switches between the VP-SEM and SEM modes. 
If the VP-SEM mode is selected, the vacuum level is set to the level specified in the Setting 
Vacuum option in the block. 
 
(2)  Vacuum level display area 
This area shows the current vacuum level in the specimen chamber in terms of an indicator 
and a numerical value. 
 
(3)  Vacuum level setting control 
This control sets and displays the vacuum level that is specified in the VP-SEM mode. 
The allowable range of vacuum level is from 6 to 270Pa. 
 
 
Vacuum mode selection control
Vacuum level display area 
Vacuum level setting control