Annunciator screen open, until their picture at the edge of field en shrinks.
Aperture diaphragm fully open. With dull contrast the aperture diaphragm should be closed only slightly: Loss at dissolution!
Note! When observations in the light field on the fact it respects that the iris screen existing in the objective is opened: Marking at
the tension ring consider or with Bertrandlinsekontrollieren (
►
(5)).
Objectively scolded
switch on:
Preparation with middle or strong drying system focus. This focusing maintain!
Lens turrets in such a way place that immersion objective point and-neighbouring drying objective as far as possible forward: both
objectives are distant from the work situation (rest) equal far and the preparation place which can be observed are accessible.
Oil droplets on the preparation bring.
Touch immersion objective at the engraved case, press case against the spring pressure of the preparation protection toward on
schraubgewinde. Objectively in working position flat ten, case slowly to lower leaves, until the front surface of the objective
dives into the oil droplet.
Preparation focus and observe.
switch off:
Hold focused condition of the objective the preparation.
It raises engraving case, switches objective off, vorteilhaftso that a neighbouring weak system in work position rests
(otherwise danger, the Frontlinse of Objekti ven small work distance with oil to moisten).
Preparation change or oil eliminate or work other requirements continue.
(8) the objective lens 1/1.6 in the Vergrößerungswechsler the
mechanism. Large field plan achromatic objective 1x/0,03 spec
In the Kontrasttubus (fig. 5/45) is the lens 1/1.6, which with the lever (fig. 4/41 into the path of rays too scolded is, if with the objective
GF-PA 1x/0,03 spec were to be worked. This objective results in-gun-balanced system for a Objektfeld of 25 mm in diameter together with
the lens 1/1.6. Focus the picture with the tension ring (fig. 4/40) at the objective (not with rough or Feintrieb of the stand!).
Objective lens 1/1.6 not in connection with other objectives switch on, it comes off no picture!
In the standard equipment JENAVAL without Kontrasttubus is the position o at the Vergrößerungswechsler by a screen abge covers.
The microscope can be re-tooled with the mechanism large field plan achromatic objective 1x/0,03 spec.
Clamping screw (fig. 2/21) with box spanner loosen and en off large change-over switch from the stand take. Thus the RH of the
Vergrößerungswechslers becomes accessible.
One of the gun eyes is abge by a black sheet metal covers. Retaining screws loosen, sheet metal off take.
Screw objective lens in 1/1.6 to attack into free the eye of the gun become (fingerprints avoid!)
Vergrößerungswechsler on the stand put on, to attack forward pull and clamping screw (fig. 2/21) again tighten.
Screw objectively 1x in into lens turrets. Note! With this objective the picture with the tension ring at the objective is focused, not
with focus-rubbed amStativ.
(9) correction of defective vision with diopter ring amBinokulartubus _
Different defective vision of the two eyes should absolutely place when micro copying without eyeglasses by correct in the diopter ring
(fig. 1/2) at the left connecting piece of the Binokulartubus to be compensated (fatigue-poor working with relaxed eyes!). The diopter ring
needs to be adjusted only once, if always the same person micro-copies.
Preparation for observation with middle or strong drying system furnish and after Köhler light up.
Eyepiece placable eyepieces (in right connecting pieces of the Binokulartubus) out or in-turn to the line figure of the eyepiece plate
