Topcon AT-G4 Скачать руководство пользователя страница 2

Note:
Be sure that the leveling rods are almost vertical.

It is recommended to position the level almost in the center of points A and B to 

avoid influence by the axis of vision on the measuring even if it varies a little in 

terms of being horizontal.

Measuring (Horizontal angle)

The horizontal circle has a clockwise graduation from 0° to 359° (0 to 399g)  

numeric indications every 10 degrees (10g).

1

Attach the plumb bob string to the plumb bob hook and adjust the string length.

2

Loosen the tripod screw a little, and move the instrument according to the apex 

to match the plumb bob end with the measuring point.

3

Re-tighten the tripod screw.

4

Use the leveling screws to center the circular level.

5

Sight target A and turn the horizontal circle to bring the scale to “zero”.

Sight target B, and then the reading 30° (33g) will be a horizontal angle 

between points A and B.

Leveling (for 4 points)

1

Set up the instrument almost in the center of the 4 points.

2

Match the bottom of a rod with pile A marked line (a).

3

Sight the rod and mark (e) on the rod that coincides with the horizontal line of 

the reticle.

4

Place the rod at B and move it vertically to sight the marked line (e).

5

Mark (b) in ink on pile B according to the rod bottom.

6

Mark piles C and D in the above manner.

Horizontal line

Checking and adjusting

Operation of the automatic compensating mechanism

1

Adjust the three leveling screw to center the circular level.

2

Sight the target, then strike the tripod slightly by hand.

3

The reticle may swing, but it will soon return to its position. This provides that 

the mechanism is functioning

Checking and adjustment of the circular level

1

Operate the three leveling screws to center the circular level.

Turn the instrument 180°

.

No adjustment is necessary if the bubble lines in the center circle. If not, take the following 
measures for adjusting.

Checking

Center circle

Turn the 
instrument180°.

No adjustment is 
necessary if the bubble 
lines in the center circle.

1

Use the hexagonal wrench to turn 

the three circular level adjusting 

screws to center the bubble by a half 

that it is out-of-level.

2

Turn the three leveling screws to 

bring the bubble to the center.

Check the instrument again by turn-

ing 180°, and adjustment is satisfac-

tory if the bubble remains at the 

center. If not, repeat the adjusting 

procedure

Leveling screw

Hexagona
l wrench

Adjusting screws

Adjusting

Collimation of the instrument

 

1

Place leveling rods A and B about 30 

to 40 meters away from each other, 

and set up the instrument with a tripod 

almost in the middle between the 

rods.

2

Use the leveling screws to center the 

circular level.

3

Sight the rods for A and B reading. 

(a1, b1)

4

Move the instrument to a position 2 to 

3meters (7 to 8 feet) away from point 

A.

5

Center the bubble again.

6

Sight the rods for reading again. (a2, 

b2)

7

No adjustment should be necessary if the difference between to pairs of read-

ings is equal: b1-a1=b2-a2.

If not, make the following adjustment.

Checking

Rear View

Front View

 

1

Calculate b2'=a2+(b1-a1) and apply 

to the rod farther away.Use adjusting 

pin to turn the reticle adjusting screw 

for collimating b'.

2

Follow “Checking” again, and confirm 

that the adjustment is satisfactory.

Adjusting

Hexagonal wrench

Cover

TOPCON CORPORATION

75-1 Hasunuma-cho, Itabashi-ku, Tokyo 174-8580, Japan  
Phone: 3-3558-2520  Fax: 3-3960-4214   www.topcon.co.jp

TOPCON POSITIONING SYSTEMS, INC.

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Phone: 925-245-8300 Fax: 925-245-8599 www.topcon.com

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Phone: 916-374-8575 Fax: 916-374-8329

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Phone: 010-458-5077 Fax: 010-284-4941 www.topconeurope.com

 

TOPCON DEUTSCHLAND G.m.b.H.

Giesserallee 31, 47877 Willich, GERMANY
Phone: 02154-885-100 Fax: 02154-885-111  [email protected]
www.topcon.de

TOPCON S.A.R.L. 

89, Rue de Paris, 92585 Clichy, Cedex, France.
Phone: 33-1-41069490  Fax: 33-1-47390251  [email protected] 

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Phone: 031-7109200 Fax: 031-7109249

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Topcon House Kennet Side, Bone Lane, Newbury, Berkshire RG14 5PX U.K.
Phone: 44-1635-551120 Fax: 44-1635-551170
[email protected]   [email protected]

TOPCON SOUTH ASIA PTE. LTD.

Blk 192 Pandan Loop, #07-01 Pantech Industrial Complex, Singapore 128381
Phone: 62780222 Fax: 62733540  www.topcon.com.sg

TOPCON INSTRUMENTS (THAILAND) CO., LTD.

77/162 Sinn Sathorn Tower, 37th Fl.,
Krungdhonburi Rd., Klongtonsai, Klongsarn, Bangkok 10600 Thailand.
Phone: 02-440-1152~7  Fax: 02-440-1158

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Excella Business Park Block C, Ground & 1st Floor,   Jalan Ampang Putra, 
Taman Ampang Hilir, 55100 Kuala Lumpur, MALAYSIA  
Phone: 03-42701068  Fax: 03-42704508

TOPCON KOREA CORPORATION

2F Yooseoung Bldg., 1595-3, Seocho-Dong, Seocho-gu, Seoul, 137-876, Korea.
Phone: 82-2-2055-0321 Fax: 82-2-2055-0319  www.topcon.co.kr

TOPCON OPTICAL (H.K.) LIMITED

2-4/F Meeco Industrial Bldg., No. 53-55 Au Pui Wan Street, Fo Tan Road, 
Shatin, N.T., Hong Kong
Phone: 2690-1328  Fax: 2690-2221  www.topcon.com.hk

TOPCON CORPORATION BEIJING OFFICE

Building A No.9, Kangding Street
Beijing Economic Technological Development Area, Beijing, China 100176
Phone: 10-6780-2799  Fax: 10-6780-2790

TOPCON CORPORATION BEIRUT OFFICE

P. O. BOX 70-1002 Antelias, BEIRUT-LEBANON. 
Phone: 961-4-523525/961-4-523526  Fax: 961-4-521119 

TOPCON CORPORATION DUBAI OFFICE

C/O Atlas Medical FZCO., P. O. Box 54304, C-25, Dubai Airport Free Zone,UAE
Phone: 971-4-2995900 Fax: 971-4-2995901 

IRELAND OFFICE

Unit 69 Western Parkway Business Center

Phone: 01460-0021 Fax: 01460-0129

Lower Ballymount Road, Dublin 12, Lreland

3C

31745 90011

AT-G4(E).fm  Page 2  Thursday, September 7, 2006  2:20 PM

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