Viewing Tube Adjustment - Leica DM Series Manual

Viewing Tube Adjustment

Adjust the eyetubes
1. Adjust the eyetubes for your interpupillary
distance. Fold or unfold the eyetubes to
decrease or increase the distance between
the eyepieces until you see one illuminated
circle.
The viewing tubes maintain a constant
tube length for all interpupillary settings.
This means that a change of interpupillary
distance does not affect parfocality, magnifica-
tion, or calibrations that depend on magnifica-
tion.
Leica DM 750
Leica EZ Viewing Tube
If you are using a Leica EZ viewing tube,
Ϙ
which has the eyepieces integrated with the
eyetubes, there are no additional adjust-
ments necessary. Be sure you are wearing
your eyeglasses or contact lenses.
If you have a DM 750 with standard illumi-
Ϙ
nation (no Koehler Field Diaphragm) go on
to section "Oil Immersion Technique" on
page 39.
If you have a Leica DM 750 with a Koehler
Ϙ
Field Diaphragm, go on to section "Koehler
Setup" on page 37.
Standard Viewing Tube with Two Fixed
Eyepieces
If you are using a standard viewing tube
Ϙ
with two fixed eyepieces (no focusing
eyepieces), there are no additional adjust-
ments necessary. Be sure you are wearing
your eyeglasses or contact lenses.
Manual
If you have a Leica DM 750 with standard
Ϙ
illumination (no Koehler Field Diaphragm)
go on to section "Oil Immersion Technique"
on page 39.
If you have a Leica DM 750 with a Koehler
Ϙ
Field Diaphragm, go on to section "Koehler
Setup" on page 37.
Standard Viewing Tube with One or Two
Focusing Eyepieces
If you are using a standard viewing tube with
one or two focusing eyepieces, you need to
make some adjustments.
1. Set the focusing eyepieces to the "0" diopter
setting.
35