The control unit is operated in a similar way to the key-mode operation of the Leica DM IRB microscope.

Significance of individual keys:

This is also the reason why the nosepiece rotation is slightly delayed after the keys are pressed.

The LAST key is used to switch to the objective that was used last.

LAMP

Brightness can be adjusted with the arrow keys: Up arrow brighter, down arrow darker. The ON/OFF key is used to switch the lamp off and on. When it is switched on again, the brightness that was set before it was switched off is reset.

MAG

The arrow keys are pressed to change the magnification. The objective nosepiece rotates to the next higher magnification within the same operating mode (IMM/DRY) when the upwards arrow key is pressed once. Similarly, the next lower magnification is switched to when the downwards arrow is pressed. If the same key is pressed more than once in quick succession, the nosepiece is rotated by the corresponding number of valid positions.

FLUOR

The arrow keys are used to switch from one filter cube to the next.

Pressing the keys several times causes the corresponding position to be jumped to.

The LAST key positions the filter cube that was set before the last keystroke.

The SHUT key is used to close the dark flap.

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Image 59
Leica DM IRB manual Lamp