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10 

3. 2 Focus adjustment   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.2.1

 Adjusting the rotation tension of the focus 

adjustment knob 

(fig.13

fig.14)

 

        For  these  Microscopes  (Model  Number  :

 

STM-850  STM-864

),the  tension  has  been 

adjusted well before delivery. 

1

Rotate the focus adjustment knob

  to move 

the slider

  to a lower place for fear that the 

zoom  body  drops  down  suddenly  if  the 

tension is decreased too much.   

2

  Hold

 

the focus adjustment knobs

  with both 

hands, stop the left knob and rotate the right 

knob  to  increase  or  decrease  the  focus  knob 

tension.   

3.  Brightness  adjustment:  the  right  brightness 

adjustment  knob

  is  used  to  adjust  the 

bottom  illumination,  and  the  left  brightness 

adjustment  knob

  is  used  to  adjust  the  top 

illumination 

 

 

3.2.2 Adjusting tension collar

Fig.15

 

NSZ-810: 

1.    If the microscope body falls down by its own 

weight  or  the  focus  obtained  by  fine 

focusing  is  lost  immediately,  the  rotation 

tension  adjustment  may be too light. In  this 

case, rotate the  tension  collar with provided 

spanner to increase the rotation tension

..

 

2. The brightness adjustment method is the same 

as that    of    Model    STM-864

 

 

 

 

 

 

 

 

Spanner 

Fig.15 

 

 

 

② 

Fig.13 

 

 

Fig.14 

Summary of Contents for STM850

Page 1: ...nual is written for stereomicroscope STM850 STM864 STM880 To ensure the safety obtain optimum performance and to familiarize yourself fully with the use of this microscope it is recommended strongly t...

Page 2: ...2 1 Components 4 2 Assembly 5 2 1 Assembly diagram 5 2 2 Detailed Assembly Procedure 6 3 Adjustment and Operation 9 3 1 Adjusting binocular head 9 3 2 Focus adjustment 10 4 Specification 11 5 Troubles...

Page 3: ...the factory supplied power cord please 2 Maintenance and Storage 1 All the lenses have been well checked and adjusted It is forbidden to disassemble them yourself 2 The binocular viewing head and foc...

Page 4: ...mble any parts of the microscope which will affect the function or decline the performance of the microscope 8 Place the instrument in a cool dry position When not using the microscope keep it covered...

Page 5: ...64 Stereo Microscope STM 880 Adjustable WF10 eyepieces Focusing Assembly Binocular viewing head Zoom body Clamping Knob Objectives Glass stage Standard base Brightness adjusting knob Power cord Main S...

Page 6: ...bers indicate the order of assembly When assembling the microscope make sure that all parts are free of dust and dirt and avoid scratching any parts or touching glass surfaces Power cord Microscope ma...

Page 7: ...ewing head into the mounting port on the zoom body and tighten the viewing head clamping screw with provided hexagonal driver Note Working Environment Requirement 1 Ambient temperature 5 C to 40 C 41...

Page 8: ...e eyepiece as in Fig 5 When Not Wearing Eyeglasses Extend the folded eyeshades This makes observation easier by preventing the inverse incidence of light from between the eyepiece and your eyes 2 2 4C...

Page 9: ...depth The size of aperture iris diaphragm can be adjusted Switch the lever to left to open the aperture iris diaphragm to the right to close the aperture iris diaphragm Check the effect during observa...

Page 10: ...ob to focus the specimen 4 Rotate the zoom body knob to the lowest magnification 0 8 looking only into the left eyepiece adjust the diopter ring on left eyepiece to focus the specimen Then do the same...

Page 11: ...right knob to increase or decrease the focus knob tension 3 Brightness adjustment the right brightness adjustment knob is used to adjust the bottom illumination and the left brightness adjustment kno...

Page 12: ...M 850 STM 864 STM 880 Zoom Ratio 1 6 1 8 1 10 Objective Magnification 0 8 5 0 8 6 4 0 8 8 Eyepiece 22 10 WF Diopter adjustable Binocular Viewing Head Inclined at 20 interpupillary distance range 50 75...

Page 13: ...adjustment ring is too tight Loosen it properly 8 6 Zoom microscope body drops or specimen goes out of focus during observation Tension adjustment ring is too loose Tighten it properly 8 6 Outfit Comp...

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