7. Start-up

¥Then pivot the arcÕs mirror image with the ad- justing knobs (100.2) and (100.4) and focus it using the reflector (100.3).

¥Use the adjusting knobs (100.2) and (100.4) to orient the mirror image symmetrically to the direct image (Fig. 103).

The V-shaped irradiation of the direct image and mirror image arcs can be superimposed.

Caution!

The bright tips of the arcs, the focal spots, must never be projected onto each other, as this results in a danger of explosion by over- heating.

Caution!

The structure of the arc can no longer be made out clearly in lamps that have been in service for a long time. The image and mirror image can no longer be superimposed ex- actly. In this case, align both images.

¥Using the collector, defocus the image with the knob (100.6) until the arc image and mirror image are no longer recognizable and the im- age is homogeneously illuminated.

¥Replace the lamp adjustment reflector with the original filter cube.

Fig. 101 Direct arc image focused but not centered (in reality, the image is less focused)

Fig. 102 Direct arc image in target position (in reality, the image is less focused)

Fig. 103 Direct arc image and mirror image in target position (in reality, the image is less focused)

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Leica DMI6000B, DMI3000B, DMI4000B manual Start-up