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Turn on the filament/beam  

(a) Turn on the filament voltage (

if the filament voltage is off

      - “

Operation

” -> “

HV/Filament Operation

” 

      - click “

Filam. on

”, it takes about 30 seconds 

(b) Turn on the beam 
      - Select Auto mode, click “

Beam On

”  

        under Auto mode, the filament current will automatically turn on and turn off when you 
        loading or remove the sample holder 
(c) Click 

Run

, to turn on the screen camera. (Left display) 

 

 Specimen height adjustment  

(a) Push “

Lens reset

” button on the operation panel Once  

(b)At 20 Kx, find a feature near the middle of the viewing screen  
(c) Press the “

WOB

” button on the operation panel;  

(d) Adjust image focus by manipulating the Z control knob of the specimen stage the image on the screen 
should remain steady, cancel “

WOB

” button

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for HT7700

Page 1: ...ome position x y α 0 Check the box next to the greyed out Reset button and then click Reset button to reset the stage NOTE If the specimen holder is taken out other than in the home position the objective lens and adjacent parts may be damaged by the specimen holder Pull the sample holder out of the column Draw out the specimen holder from the column hold the handle and pull straight back until th...

Page 2: ...ample Do not touch to the left of the O ring for this is the vacuum side of the holder Fix the holder with the holder fixing table Flip the end of the sample holder up and insert your grid with the darker side up Flip the end of the sample holder down to secure the sample Check to make sure the sample will not fall out of the holder Insert the sample holder ...

Page 3: ...the specimen holder If this switch has not been pressed the instrument system may judge that no specimen holder is set in the stage and evacuation may not start In this case push the holder lightly into the stage NOTE Expect for 10 Seconds after completion of pre evacuation the specimen holder cannot be inserted into the objective lens If the holder is forcibly turned problems such as damage of th...

Page 4: ...atically turn on and turn off when you loading or remove the sample holder c Click Run to turn on the screen camera Left display Specimen height adjustment a Push Lens reset button on the operation panel Once b At 20 Kx find a feature near the middle of the viewing screen c Press the WOB button on the operation panel d Adjust image focus by manipulating the Z control knob of the specimen stage the...

Page 5: ... of the image window adjust the intensity 2 000 3 000 e Use Focus on the operation panel to adjust the focus of the sample f Click Start Acquire to record the final image g Click File Save Display As to save your image h Switch to Screen camera Click Stop View then Scr in left display double click Link Screen Before changing samples please reduce magnification to 4 K and set the spacemen stage at ...

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