Motic GM-161 Series Manuel utilisateur

Dear Customer,

Thank you for choosing a Motic Microscope.

We are constantly improving our instruments and adapting them to the requirements of modern

research techniques and testing methods. This may involve modification to the mechanical as well as

optical components of our microscopes.

Therefore, all descriptions and illustrations in this instruction manual, including all specifications are

subject to change without prior notice.

Best regards,

Your Motic Team

Correct operation ensures the microscope’s long-term proper usage. Contact your local Motic

distributor for maintenance needs or contact Motic directly through our website www.motic.com.

CONTENTS

1. Please follow these instructions carefully 4

2. Nomenclature 5

2.1 GM-161B 5

2.2 GM-171T 6

3. Introduction 7

4. Instrument configuration and functions 8

Stereo Configuration:

4.1 Main body 8

4.2 Binocular Observation Tubes: (GM-171B) 8

4.3 Binocular Observation Tubes: (GM-161B) 9

4.4 Trinocular Observation Tubes: (GM-171T/ GM-161T) 9

4.5 Microscope Carrier 9

4.6 Base 10

4.7 Illumination 13

4.8 Stage 14

5. Accessories 15

5.1 Gemstone Holder 15

5.2 Polariser 15

5.3 Diamond Holder and 10X measurement eyepiece 16

5.4 Eyepieces 17

5.5 Auxiliary objectives 17

5.6 Immersion cell 17

5.7 Diffuser 18

5.8 Photo adapter 18

5.9 C-mount camera adapter 18

5.10 Large Gem Plate 19

6. Microscope assembly 20

6.1 Unpacking the microscope 20

6.2 Microscope assembly 20

7. Microscope adjustment and operation 21

7.1 Interpupillary distance 21

7.2 Focus and diopter adjustment 21

7.3 Magnification and working distance 22

7.4 Changing the bulb 22

7.5 Microscope operation 25

8. Camera and video equipment installation 26

8.1 Camera installation and use 26

8.2 Video installation and use 26

9. Operation safety measures 27

10. Microscope maintenance and care 27

10.1 Prevention against dust 27

10.2 Prevention against water and moisture 28

10.3 Proper cleaning techniques 28

10.4 Moving the Microscope 28

11. Troubleshooting 29

Appendix A (GM-171 Optical data) 30

Appendix B (GM-161 Optical data) 31

1. PLEASE FOLLOW THESE INSTRUCTIONS CAREFULLY

1.1 Use：

This microscope is to be used for observation purposes only.

1.2 Do not disassemble：

Disassembly may lead to possible damage of the instrument and voidance of warranty. If a problem is

discovered, please contact the Motic dealer nearest you.

1.3 Avoid getting burnt:

Wait for the bulb and surrounding parts to cool down before changing. Keep flammable objects

(gasoline, alcohol, cloth, paper, etc.) away from the bulb to avoid the possibility of a fire.

1.4 Check input voltage:

The label on the back of the microscope clearly specifies the microscope’s input voltage which must be

compatible with the local power supply. Using the microscope with a non-specified voltage rating can

lead to damage of the instrument.

1.5 When changing the bulb please note:

Only specified halogen bulbs and fluorescence tubes may be used.

Before changing the bulb, turn off the power and unplug the power cable to avoid being electrocuted.

When changing the bulb, do not let the bulb get dirty. The outer surface of the bulb must not be

contaminated with dust or fingerprints etc.

1.6 Storage：

Before moving the microscope, be sure the power is switched off.

Microscope working temperature and humidity requirements:

Room temperature: 5°C ~ 35°C;

Maximum relative humidity: 65%

1.7 Operation：

This microscope is a high precision instrument and must be handled and operated with extreme care.

Jolting or aggressive operation can lead to damage of the instrument.

2. NOMENCLATURE

2.1 GM-161B

Fig.1

2.2 GM-171T

Fig.2

3. INTRODUCTION

Thank you for purchasing a Motic GM-161/ GM-171 series Gemology Microscope. Before using this

instrument, please be sure to carefully read the instruction manual in order to ensure proper use,

maintenance and care of the instrument.

The GM-161/ GM-171 series Gemology Microscope is highly effective in the observation of minerals

and crystals, the appraisal of precious stones, and may also be employed in chemical and biological

research. The microscope’s magnification system produces high definition, high resolution, and life-like

colour stereo images. An extra wide field of view (23mm at 10X of GM-171; 20mm at 10X of GM-161);

a continuous zoom system (from 7.5X-50X of GM-171; 7.5x-45X of GM-161); the ability to configure the

microscope with different eyepieces and objective lenses changing the total zoom range from 2.25X to

200X of GM-171 and 2.25X to 180X of GM-161, make this microscope a welcome addition to any

laboratory.

The instrument’s working distance is 110mm with a focusing range of 92mm. Select the desired

illumination method from bright field, dark field (for excellent dark field results, illumination vertical

distance should be approx.30mm), or daylight incident illumination. The microscope arm is able to tilt

from 0° ~ 45°allowing for the adjustment of observation eye point height and angle. The entire

microscope can be rotated 360°, making it more convenient for multiple users to observe. This

instrument also employs a high performance, safe, economical and reliable electric switching circuit.

The GM-161/ GM-171 Series Gemology Microscope comes with a photo/ video port, which provides

excellent image quality output and a multitude of professional optional accessories to select from.

4. INSTRUMENT CONFIGURATION AND FUNCTIONS

Stereo Configuration:

4.1 Main body：

The optical body supplies a 1:6.7 zoom ratio of GM-171 and 1:6 zoom ratio of GM-161, which

provides the microscope with long depth of field and stereoscopic capability. Throughout the

magnification change process, the microscope remains parfocal and parcentered (for specific

alignment and calibration instructions see the Microscope Adjustment and Operation section).

The zoom adjustment knobs (Fig.3) are located on both sides of the optical body, rotate these

knobs to change the magnification strength. For the specific magnification strength, see the values

on the adjustment knob (the current magnification strength is aligned with the 0 on the body).

The optical body is inserted into the microscope carrier and the holding screw located on the left

side of the carrier is used to secure the body to the frame.

Fig.3

4.2 Binocular Observation Tubes: (GM-171B)

Equipped with N-WF10X/F.N.23 eyepieces.

Adjust the two eyepiece tubes to adjust the interpupillary distance (interpupillary adjustment range:

48-75mm).

The diopter adjustment rings on the eyepieces are used to adjust the diopter scale (±5°) of the

eyepieces.

4.3 Binocular Observation Tubes: (GM-161B)

Equipped with N-WF10X/F.N.20 eyepieces.

Adjust the two eyepiece tubes to adjust the interpupillary distance (interpupillary adjustment range:

50-75mm).

The diopter adjustment rings on the eyepiece tubes are used to adjust the diopter scale (±5°) of

the eyepieces.

4.4 Trinocular Observation Tubes: (GM-171T/ GM-161T)

The trinocular tube structure is the same as outlined above with the addition of a port at the top of the

microscope body that allows for the addition of a camera or video camera.

There is a fixed 50:50 beam splitter for the trinocular models GM-161T/GM-171T. Binocular

eyepiece observation and trinocular digital imaging can be done simultaneously. 50% of the lights

will enter eyepieces and 50% of the lights for camera. The brightness could be fully satisfied with

the board-band anti-reflection technology and high brightness in illumination.

At the top of the trinocular tube, there is a locking screw that is used to secure the adapter for the

imaging device. After fitting the adapter, this locking screw should be tightened.

Fig.4

4.5 Microscope Carrier：

The microscope carrier is connected to the vertical bracket, which composes the microscope arm.

The focusing knobs are located on both sides of the arm (Fig.5). By rotating them, the optical body

(provided it has been installed) can be moved up and down allowing users to bring the specimen

into focus (Fig.6). To adjust the tension of the focusing knobs, use a small screwdriver (Fig.7) to

tighten or loosen the coarse focus torque adjustment rings located on the insides of the focusing

knobs (Fig.8).

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