8. Operation

8.9 Light sources

Adjust the brightness using the function keys (66.5). The INT function buttons are always assigned to the currently active transmitted light (TL) or incident light (IL) axis.

For TL and IL:

The setting can be made in coarse and fine steps. Pressing both INT buttons at the same time toggles between coarse and fine adjust- ment. The light intensity in the display chang- es accordingly.

0-20

Coarse adjustment: ======

0-255

Fine adjustment: ----------

The intensity is individually adjusted and stored for each objective and contrast method.

For fluorescence:

The brightness is adjusted in 5 defined incre- ments (FIM):

100% / 55% / 35% / 20% / 10%

8.10 Aperture diaphragm and field diaphragm

Both diaphragms have been set to suitable val- ues for the current objective and contrast meth- od at the factory.

The diaphragms can be adjusted at any time using AP (aperture diaphragm) (66.2) and FD (field diaphragm) (66.4) function keys.

Caution!

The old values will be overwritten by the current ones!

The function keys are assigned to the current- ly active transmitted light (TL) or incident light (IL) axis.

Caution!

When the PH or DF is being used, the aperture diaphragm is opened completely and cannot be closed to prevent incorrect operations.

Fig. 66 Control panel

1Variable function keys

(also on the right side of the stand)

2Aperture diaphragm

3Transmitted light / incident light

4Field diaphragm

5Light intensity

1

2

3

4

5

59

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Image 59
Leica DM4500P, DM5000B, DM4000M manual Operation Light sources, Fine adjustment

DM4500P, DM5000B, DM4000M specifications

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