Sample Tilt; Astigmatism Correction Of Beam Tilt - Hitachi HF2000 TEM Operation Manual

13. Sample tilt

•
Press [DIFF]. (see Sec.9, SAED)
•
Adjust the sample tilt with electron beam direction along the zone axis.
HAND
L
FOOT
L
EFT

14. Astigmatism correction of beam tilt

•
Turn the WOBBLER ANGELE control on the right main panel fully clockwise.
•
Press the WOBBLER ON/OFF switch.
•
When astigmatism is not corrected, rotating motion in a specific direction is observed. Adjust the
[BTX] and [BTVX] controls on the left sub panel so that non-directional image rotation is observed as
shown below.
•
Turn the WOBBLER ANGELE control counterclockwise by 3 steps. When astigmatism is not
corrected, adjust the [BTY] and [BTVY] controls on the left sub panel so that non-directional image
rotation is observed as shown below.
EFT
FOOT
R
IGHT
HAND
R
IGHT
HAND
L
EFT
10
FOOT
R
IGHT