Bresser LCD-Micro Mode D'emploi page 9

f) The colour filter disc (Fig. 1+4.15, beneath the microscope table (Fig. 1+4.7)
helps you when viewing very brightly or transparent preparations. For this
please select the suitable colour depending upon the object being observed.
The components of colourless or transparent objects (e.g. grain containing starch,
single-celled organisms) will be much easier to recognise.
3.2 Operation of the screen module
3.2.1 Observing the screen
If you switch on the LCD monitor (see section 3.1 c), you will see the live image
of your object as well as five different displays:
If you've set the LCD screen option (see section 3.1 c) then you'll see a live
picture of your specimen with four different entries.
a) There's a camera symbol at top left (photo mode) together with the graphics
resolution (number of pixels by width and height).
b) Bottom left the remaining internal screen module memory for graphics files
is shown in square brackets.
c) EV brightness correction is shown first bottom right. Press the up or down
arrows (illustration 2.20) to adjust brightness from -1.2 (dark) to +1.2 (bright).
d) The electronic zoom factor is shown second bottom right next to a
magnifying glass symbol. Use the right and left arrows (illustration 2.20) to
enlarge the image by factors from 1 to 4. – Maximum LCD Micro enlargement
is hence 4 x 400 = 1600x.
3.2.2 Producing photographs
By pressing of the photo button "SNAP "(Fig. 2.21) a photograph is taken of
the live image, which is stored.
3.2.3 Photograph management
By pressing the change button "ESC "(Fig. 2.23) you change from live images to
the list of stored photographs. In the list, you can select a required picture by
pressing the appropriate arrow keys (Fig. 2.20); the selected picture has a
yellow border. To display it press the "OK" input key (Fig. 2.20). By pressing "ESC"
you can return to the list, press "ESC "again to return to the live image.
By pressing the "MENU" button (Fig. 2.22) whilst displaying the list, a menu bar
appears, which you can control using the appropriate arrow keys (Fig. 2.20, ).
Here you can also change certain settings and bring them into force by pressing
the "OK" input key (Fig. 2.20).
Menu overview in list display.
a) File Protect, Lock, Unlock, Exit. Use the left arrow key to leave the selection
screen.
b) Del File – Current (delete chosen graphics file), All (delete all graphics files).
This is queried for certainty reasons. If you decide yes use the left arrow key to
go to OK and press OK. If not leave Cancel activated and press OK to return to
the list.
c) Video (list of film records, Video Player), Picture (list of photo records, Picture
View). Video can be reached from the picture list and vice versa.
d) Exit has the same effect as "ESC".
3.2.4 Revise settings
By pressing the "MENU" button (Fig. 2.22) whilst displaying the live image a
menu bar appears, which you can control using the appropriate arrow keys
(Fig. 2.20). Here you can also change settings and bring them into force by
pressing the "OK" input key (Fig. 2.20).
Menu overview (during live image display):
a) Mode (photography mode): Single, Auto (at intervals given in Setting),
Setting (photo intervals in minutes and seconds, adjusted using arrow keys and
OK). Start the photo session with "„SNAP"; the countdown to the next photo is
shown in the middle of the screen. End it after the next snap with ESC.
b) Size (pictorial resolution, width x height) 2048 x 1536, 1600 x 1200, 1280
x 960, 1024 x 768, 800 x 600, 640 x 480.
c) Effect (graphical effect): Normal (normal positive colour image), Negative
(negative image), Sepia (sepia shading), BlackWhite.
d) Date Label of the stored snaps: Setting (time), Yes (label), None (no label).
If you're in Setting press OK. Use the up and down arrows to change the year
shown by a yellow arrow. Use the right and left arrows to alter the month and
day in "Date", the hours and minutes in "Time". Select the time set with OK -
this will be acknowledged by brief display of "Success". The year, month and
day of a picture is shown top left.
e) DV Record (mode for filming).
f) Exit (the menu).
3.2.5 Produce and administer film
In this mode resolution is shown top left outside the image during live picture
display and the internal memory time available for film at bottom left. The
electronic zoom factor (1.0 to 2.0) is shown bottom right. Start filming with SNAP
(illustration 2.21); press this key again to end filming. During filming a camera
symbol blinks at top left and the current filming time is shown at bottom left. Film
image resolution is 320 x 240. In Effect the same pictorial effects as for
photos are selectable. Use Capture to toggle between filming and photographing.
Use Exit or ESC to get out of the menu and then ESC to revert to the live
picture display. To view the stored films use ESC to get to the photo list and then
MENU to get to the film list via Video (see section 3.2.3). Use the arrows to
choose a film, select it and then play it endlessly with OK. During play use OK
to toggle between Pause (||) and Play ( ). Use the left arrow to choose the
previous film (| ) and the right the next ( |). A strip showing a film playing bar
graph, play duration and functions is briefly displayed here. This can also be shown
using Snap if you want to know current status. Use ESC" to end the play
function. Delete films using MENU and DelFile as for photos (see section 3.2.3).
You can view your films and manage them on any connected PC (see section
6 b) using a suitable media programme.
4. Viewed Object – condition and preparation
4.1 Condition
Transparent and non-transparent specimens can be examined with this
microscope, which is a direct as well as transmitted light model. If opaque
specimens are examined - such as small animals, plant parts, tissue, stone and
so on - the light is reflected from the specimen through the lens and eyepiece,
where it is magnified, to the eye (reflected light principle, switch position I). If
opaque specimens are examined the light from below goes through the
specimen, lens and eyepiece to the eye and is magnified en route (direct light
principle, switch position II). Many small organisms of the water, plant parts and
finest animal components have now from nature these transparent
characteristic, other ones must be accordingly prepared. Is it that we make it
by means of a pre-treatment or penetration with suitable materials (media)
transparent or thus that we cut finest wafers off of them (hand cut, Microtom)
and these then examine. With these methods will us the following part make
familiar.
4.2 Manufacture of thin preparation cuts
Specimens should be sliced as thin as possible, as stated before. A little wax
or paraffin is needed to achieve the best results. A candle can be used for the
purpose. The wax is put in a bowl and heated over a flame. The specimen is
then dipped several times in the liquid wax. The wax is finally allowed to harden.
Use a MicroCut (Fig 5.36) or knife/scalpel (carefully) to make very thin slices
of the object in its wax casing. These slices are then laid on a glass slide and
covered with another.
4.3 Manufacture of an own preparation
Put the object which shall be observed on a glass slide and give with a pipette
(Fig. 5.34 B) a drop of distilled water on the object (Fig. 6).
Set a cover glass (in each well sorted hobby shop available) perpendicularly at
the edge of the water drop, so that the water runs along the cover glass edge
(Fig. 7). Lower now the cover glass slowly over the water drop.
Note:
The gum medium supplied (Fig 5.37 B) is used to make permanent slide
cultures. Add it instead of distilled water. The gum medium hardens so that the
specimen is permanently affixed to its slide.
5. Experiments
If you made yourself familiar with the microscope already, you can accomplish
the following experiments and observe the results under your microscope.
5.1 Newspaper print
Objects:
1. A small piece of paper from a newspaper with parts of a picture and some
letters
2. A similar piece of paper from an illustrated magazine
Use your microscope at the lowest magnification and use the preparation of the
daily paper. The letters seen are broken out, because the newspaper is
printed on raw, inferior paper. Letters of the magazines appear smoother and
more complete. The picture of the daily paper consists of many small points,
which appear somewhat dirty. The pixels (raster points) of the magazine
appear sharply.
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