8
REFLECTED LIGHT BRIGHTFIELD/DARKFIELD
OBSERVATION PROCEDURE
}The following flow chart pertains to the reflected light brightfield/darkfield observations.
The controls used for a system using the U-HSTR2 hand switch, U-FH focus adjustment knob unit and TH4 power supply
unit for halogen bulb together with those used for a PC-controlled system.
For details on the PC control, also refer to the tutorial or help provided with the BX2-BSW software.
Start observation.
(Non PC Controlled System)
(PC Controlled System)
Set the main switch to “
I
” (ON).
1
BX-UCB main switch “
I
” (ON)
2
TH4 main switch “
I
” (ON)
1
Main switch “
I
” (ON)
3
PC “
I
” (ON)
Select BF (brightfield) or DF
(darkfield).
4
BF/DF button (Page 10)
3
PC command
Select the light path (when a trin-
ocular tube is used).
5
Light path selector knob (Page 15)
5
Light path selector knob (Page 15)
Place the specimen on the speci-
men table.
Engage the 10X objective in the
light path.
6
Revolving nosepiece button
3
PC command
Bring the specimen in focus.
7
Objective Up/Down buttons, or
8
Focus adjustment knob
3
PC command
Adjust the brightness.
9
Light intensity adjustment knob
3
PC command
Adjust the interpupil-
lary distance.
Adjust the diopter.
a
Binocular sleeves (Page 14)
b
Diopter adjustment ring (Page 14)
a
Binocular sleeves (Page 14)
b
Diopter adjustment ring (Page 14)
Adjust the aperture iris and field
iris diaphragms.
}In DF observation, both should
be opened fully.
c
AS+/– buttons (Page 11)
d
Field iris diaphragm auxiliary
lever (Page 11)
3
PC command
d
Field iris diaphragm auxiliary
lever (Page 11)
Engage the objective to be used
in the light path and bring the
specimen in focus.
6
Revolving nosepiece button
7
Objective Up/Down buttons or
8
Focus adjustment knob
3
PC command
3
PC command
Engage the required
filters.
e
Filter insertion slot (Page 13)
e
Filter insertion slot (Page 13)
Adjust the brightness.
9
Light intensity adjustment knob
3
PC command
