Zeiss EM 10 A, Operating Instructions Manual

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Page 2: ...A Each of these four lenses can be displaced against a restoring spring as a whole centering With C2 and PI it is possible in addition to displace one polepiece with respect ot the other this tilting...

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Page 4: ...in and use specimen drives to move image detail to central position between the two image positions Repeat polarity reversal until image detail appears in exactly identical position with both polariti...

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Page 6: ...is not satisfactory or after disassembling PI C 1 35 Set magnification to 20 000 and note direction of image sweep Switch back to 6 300 C 1 36 Use PI tilting screws 1 0 3 to displace image detail in...

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Page 8: ...and to adjust for m a x i m brightness turning each beam alignment potentiometer back and forth results in equal loss of brightness in both ways if aperture image is displaced during this procedure re...

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Page 10: ...C 1 46 Turn C2 switch clockwise from minimum spot setting C2 over excited and note sweep direction of growing spot Reset C2 switch for minimum spot size C 1 47 Use C2 tilting screws 1 0 1 1 to displa...

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Page 12: ...cation selector to 1 000x Repeat C 1 53 and C 1 54 until obtaining minirmun spot size Set magnification selector to 6 300 Center bright spot acc to C 1 54 C 1 56 Repeat final check as in C 1 45 If nec...

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Page 14: ...ce pole plate now displaceable Close column and pump down without inserting cooling plate C 1 62 Further preparatory steps Switch off all lenses keys on left alignment panel Fully withdraw all apertur...

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Page 16: ...in focusing position of Coarse knob turn 5 steps and note current center center point of image rotation C 1 644 Use alignment screws 10 7 to displace current center image detail coinciding with curren...

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Page 18: ...up t o 1 5 mm 114 length of center mark off screen center i n any direction C 1 66 Precision alignment on current center normal polarity C 1 661 Turn Coarse knob 5 21 3 steps from focus and note new c...

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Page 20: ...by magnetically a t t r a c t e d t o o l Place top cooling p l a t e 3 on copper studs 5 and f i x with 3 brass screws cf p a r t D Turn alignment screws 10 7 anti clockwise p u l l out u n t i l mee...

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Page 22: ...rn switch 1 25 clockwise until shadow image of new aperture is somewhat smaller than large screen C 2 14 Using axial and transversal aperture drives with left hand center aperture image on large scree...

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Page 24: ...cus c e n t r a l spot of d i f f r a c t i o n p a t t e r n with potentiometer 5 22 I f necessary correct astigmatism of c e n t r a l spot with PI stigmator cf p a r t B C 2 25 I n s e r t objectiv...

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Page 26: ...een edge with left hand C 2 34 Checking alignment of intermediate image aperture Set magnification to 6 300 aperture image decreases centeredly to screen center Otherwise recheck alignment of P1 and P...

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Page 28: ...ion signals burnt out filament Make sure that beam tilt system is switched off key 4 15 C 3 22 Set magnification to 1 000 and switch off P2 key 3 16 C 3 23 Press all three keys I 11 I11 of aligment ai...

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Page 30: ...i directional blur of image detail appears C 4 4 Use right potentiometers 3 23 alternately to minimize blur use small screwdriver complete elimination of blur impossible C 4 5 Release key 3 19 and pre...

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