OPERATIONCarl Zeiss Axiovert 200 Axiovert 2003-10 B 40-080 e 03/01Condensers (3-1/23)Depending on their type, condensers (3-7/1) areequipped as follows:− 5- or 6-position turret for:brightfield: Hphase contrast: Ph0, Ph1, Ph2, Ph3 withcenterable stopsinterference contrast: DICVarel contrast: Var1, Var2− Aperture diaphragm (iris stop). Use knurledknob (3-7/2) to open and close the aperturediaphragm.− Turn the turret wheel (3-7/4) to swing thebrightfield insert or the contrast stops into thebeam path.− The brief description of the set turret position(e.g. H) is displayed to the user at the front.− Condensers for Varel contrast are equippedwith a knurled knob (3-7/3) which allows theposition of the Varel stop to be changed whenthe Varel turret position has been set. The lever(3-7/5) permits switching between Var1 andVar2.− The condensers 0.35 and 0.55 for phasecontrast require the use of one SW 1.5 Allenscrewdriver each (plugged in at 3-8/1) to centerthe phase stops. The condenser turrets feature the so-called automatic diaphragm mechanism, i.e. the aperturediaphragm (iris stop) is opened completely when a phase stop position is switched on. When anew turret position is switched on, the aperture diaphragm is automatically reset to its lastopening.Fig. 3-7 LD condenser 0.55, 6-position,H, Ph1, Ph2, Ph3, Var1/2Fig. 3-8 LD condenser 0.35, 6-position,H, Ph0, Ph1, Ph2, DIC, DIC
