Leica DM4000B Manuel D’Utilisation

52

• The brightness is set using the function keys

(65.5). Then, the INT function keys are as-
signed to the currently active axis for trans-
mitted light (TL) or incident light (IL).

• For TL and IL:

Settings can be made either in large or small
increments. Pushing both INT buttons
simultaneously switches between coarse and
fine setting. The display indicator changes ac-
cordingly.

0-20

Coarse adjustment:

 ======

0-255

Fine adjustment:

 ----------

• For Fluo:

The brightness is set in 5 fixed steps (FIM):
100% / 55% / 35% / 20% / 10%

Fig. 645 Control panel
1 Variable function keys
2 Aperture diaphragm
3 Transmitted light/incident light
4 Field diaphragm
5 Light intensity

1

2 3 4 5

Both diaphragms are already factory-set to the
optimum setting for the current objective.

• The AP (65.2) keys for the aperture diaphragm

and the FD keys (65.4) for the field diaphragm
may be used to change each diaphragm’s set-
ting at any time.
Then, the function keys are assigned to the
currently active axis for transmitted light (TL)
or incident light (IL).

When doing so, old values are overwritten and
the new values are stored!

While using PH or DF the aperture diaphragm is
completely opened and locked.