Hitachi Microscope & Magnifier S-4800 Manual De Usuario

PRECAUTION - 10  

(6)  Signal processing modes ....................Automatic brightness control, 

Gamma control, 
Automatic focus, 
Automatic stigmator 

 
(7)  Automatic data display ........................Image number, accelerating voltage, magnification, 

micron bar, micron value, date/time and working 
distance can be printed on the film. 

 
(8)  Data entry ............................................Alphanumeric characters, numbers, and marks can 

be written on the image from the keyboard. 

 
(9)  Electrical image shift............................

±

12 

µ

m (WD = 8 mm) 

 
 
6.  Evacuation System 
 
(1)  System type.........................................Fully automatic pneumatic-valve system 
 
(2)  Ultimate vacuum levels........................Specimen chamber 

: 

7 

×

 10

-4

 Pa 

Electron gun chamber : 

 

IP-1 1 

×

 10

-7

 Pa or better 

IP-2 2 

×

 10

-6

 Pa or better 

IP-3 7 

×

 10

-5

 Pa or better 

 
(3)  Vacuum pumps....................................Electron optical system :  3 ion pumps 

Specimen chamber 

:  Turbo molecular pump   

1 oil rotary pump should be provided by user. 

 
(4)  Compressor .........................................Oil-less type compressor should be provided by user. 
 
 
7.  Protection Devices 

 

Warning devices ..........................................Power failure, Cooling-water interruption, Inadequate 

vacuum