Hitachi S-4800 manual Adjustment of Specimen Height, Specimen Exchange Position

3.2.3Adjustment of Specimen Height

Put the specimen stub on the specimen holder and adjust it to the proper height using the specimen height gauge as shown in the figure. To adjust, loosen the lock screw and adjust the specimen height so that the highest point of the specimen is the same as the bottom of the height gauge. Then, tighten lock screw.

specimen

stub

lock screw

height gauge

CAUTION

Specimen height must be adjusted carefully. It must not be 0.5mm higher than the bottom of the height gauge. If it is higher than this, the specimen may strike the objective lens and cause damage when operating at a short working distance or at a high tilt angle. Also, accurate setting of specimen height minimizes image shift during specimen tilting.

3.2.4Specimen Exchange Position

(1) Type 1 (Manual stage):

Confirm that the Stage Lock is free (the lamp of Stage Lock switch is off).

Then set the X, Y, R, T and Z knobs of the specimen stage to the specimen exchange position.

Specimen exchange positions: X: 25.0 mm		Y: 25.0 mm
R: 0゜	T: 0゜	Z: 8.0mm
Z		stage lock

T

R

X

Y

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