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                                                                                                                BM-800 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

 

 
 

23 

Figure 23 

 
Swing out Condenser 

 
Aperture Diaphragm 

 

21 

Figure 21 

 

22 

Figure 22 

4-7 Focus (figure21, figure22) 
 

1

 When not using the video set 

Push in the light path selector lever (figure 25) 
completely, then observe with both eyes. Use the 
10

×

objective focus, to avoid the objective touch 

with the specimen, you should raise the 
mechanical stage at first, let the specimen close to 
the objective, then slowly separating them to 
focus. 
The operator can converse turn the coarse focus 
knob to get the specimen down ,and search 
images in the 10

×

ocular simultaneously, then use 

the fine knob to focus. At this moment, you can 
replace other magnification objectives safely, and 
focus without the risk of destroying the specimen.

 

 
2

When using the video set 

Pull out the light path selector lever (see figure25), 
observe with both eyes, when the image is sharp, 
you can see the pictures directly on the video 
screen which connected by the microphotograph 
system through the video mount. 

 

 

If you need to fix the stage on a vertical 

position to make the observation become 
more convenience, take use of the locking 
set. 

 

4-8 

Adjusting 

the 

Swing 

out 

Condenser (Figure 23) 

The center of the condenser and the light axes of 
the  objective  are  coaxial.  It  has  been  adjusted 
before  leaving  factory,  so  the  user  needn’t  to 
adjust them by self. 
The  highest  position  of  the  condenser  has  been 
adjusted too. It also needn’t any user’s operation. 
Turn  the  condenser  focus  knob  to  shift  the 
condenser. It needs to raise the condenser when 
using  the  high  magnification  objective,  and  to 
decline when using the low magnification one. 
 

Summary of Contents for BM-800

Page 1: ...This manual is written for lab biological microscope BM 800 For safety exerting best performance of the instrument and making you familiar with the instrument entirely we strongly recommended that yo...

Page 2: ...Contents BM 800 Use Notices 1 Name of Components 1 2 Installation 2 2 1 Installation Diagram 2 2 2 Installation Steps 3 3 Adjustment 7 4 Operation 9 5 Technical Specifications 13 6 Trouble Shooting 14...

Page 3: ...tage or it will bring a serious damage to the instrument 9 Use the factory supplied power cord please II Maintenance 1 All the lenses have been well checked and adjusted It is forbidden to disassemble...

Page 4: ...1 Name of Components BM 800 Nosepiece Trinoclular Viewing Unit Objective Mechanical Stage Lamp House Video Port optional Eyepiece Ocular Microscope Body...

Page 5: ...nstallation sequence of the components The number in the figure show the installation steps Before installing be sure every components is clean do not score any parts or glass surface Keep well with t...

Page 6: ...Microscope Body Lamp House Mechanical Stage Support Device 10 Wide Field Eyepiece Infinite Plan Objective Trinocular Viewing Unit Video Port optional...

Page 7: ...2 2 2 Installation Steps BM 800 Guide Board 3 1 Locking Block and Bolt...

Page 8: ...l stage support device figure 2 place it from the top of the guide board figure 1 let the device figure2 falling free until it reach the limit position Use the hexagon wrench screw down the locking bl...

Page 9: ...amp holder 2 Replacing Lamp when using or soon after When using or soon after it is turned off the lamp the lamp house and nearby parts will be very hot and will cause serious burns Please turn the ma...

Page 10: ...epiece from the left or the right side figure 9 then push the nosepiece clockwise then place other objectives by the sequence of low to high magnification figure 10 Installing objective this way will...

Page 11: ...into the eyepiece tube until they are against each other The result is showing in the figure 14 2 2 7Installing the Video Port optional Insert the video port figure 12 into the trinocular unit figure...

Page 12: ...3 Adjustment BM 800 Diopter Ring Left Fine Focus Knob Left Coarse Focus Knob Clocking Set Condenser Focus Knob Video Port optional...

Page 13: ...o Port optional Interpupillar Distance Indicator Right Fine Focus Knob Tension Adjustment Collar Right Coarse Focus Knob Brightness Adjustment Knob Main Switch Field Diaphragm Swing out Condenser with...

Page 14: ...irection the voltage decline and the brightness weaken Using the lamp in a low voltage condition will prolong the use life 4 3 Adjust the Tension Adjustment Collar figure 17 The tightness of the tensi...

Page 15: ...ng the objective touch the specimen 4 5 Adjusting the Interpupillar Distance Figure 19 The interpupillar distance range 48mm 75mm When observing with two eyes hold on the left and right prism holder t...

Page 16: ...estroying the specimen 2 When using the video set Pull out the light path selector lever see figure25 observe with both eyes when the image is sharp you can see the pictures directly on the video scre...

Page 17: ...ture Diaphragm The aperture diaphragm is designed for the adjustment of the numerical aperture not for the brightness Generally reducing the diaphragm opening to 70 80 of the N A value of the respecti...

Page 18: ...he observed image of the field of view is sharp then open the field diaphragm let the image full of the field of view reduce the mixed light improving the quality of the image 4 10 Switching the Light...

Page 19: ...n lamp 6V30W Condenser Swing out condenser NA0 9 0 25 Configuration Table Viewing Head Compensation Free Trinocular Head Eyepiece Extra Wide Field Eyepiece Infinite plan objective 4 10 40 100 Objectiv...

Page 20: ...lens There are stains on the specimen Change the specimen 3 Find dust and stain in the field of view There are stains on the eyepiece Clean the eyepiece The objective damage Mend and correct the objec...

Page 21: ...he tension adjustment collar is too tight Loose properly 2 The image can t stay on the focal plane in the process of the observation The tension adjustment collar is too loose Tighten properly III Ele...

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