Total Station Topcon GPT-8200Aseries

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Review Total Station Topcon GPT-8200Aseries

Auto tracking pulse total station GPT-8200Aseries

The GPT-8200A series is auto tracking total stations of a dual mode type. One station is capable of non-prism range finding and auto tracking, accomplishing all positioning from surveying to instrumentation. The non-prism mode can comfortably measure distances beyond 1km. Easy observation of off-limits areas such as hazardous areas stricken by disasters and airports. High-speed auto tracking at 12°/s for instrumentation of moving objects. Powerful in instrumentation of various types in auto tracking and auto calibration.

<Specification>

Model		GPT-8201A	GPT-8202A	GPT-8203A	GPT-8205A
Telescope
Objective lens diameter		50mm
Magnification		30 ×
Image		Erect
Field of View		1°30′
Resolving Power		3″
Minimum Focusing Distance		1.3m
Focusing Speed		2 speeds	2 speeds	2 speeds	2 speeds
Auto Tracking/ Servo Mechanism
Max. Rotating Speed		50° / s
Max. Automatic Tracking Speed		12° / s
Auto Tracking Range	Prism 2	8m to 800m
	Prism A3/A3s	10m to 500m
Drive Range		All range rotating
Search Range		User definable
Coarse movement		Shuttle control (in 7 steps)
Fine movement		Jog Control (Min. 1 sec)
Collimation Accuracy *1		3″ (Standard deviation of repeatability)
Distance Measurement
Prism mode
Measuring Range	Prism 2*2	2 to 7,000m
Measuring Accuracy		±(2mm+2ppmxD) m.s.e.
Non-prism
Measurement Range (White surface)		3 to 120m (Long mode 30 to 1,200m)
Measuring Accuracy (Diffusing Surface)	3 to 25m 25m to Long mode *3	±(10mm) m.s.e. ±(3mm+2ppmxD*) m.s.e. ±(10mm+10ppmxD*) m.s.e.
Measuring time
		0.2mm: 3 sec. (Initial 4 sec) 1mm: 1.2 sec. (Initial 3 sec.) Long mode 1mm: 1.5 to 6 sec.
Angle Measurement
Method		Absolute reading
Horizontal/Vertical		2 sides
Minimum reading		0.5″ /1″ (0.1 / 0.5mgon)		1″ /5″ (0.2 / 1mgon)
Accuracy**		1″ (0.3mgon)	2″ (0.6mgon)	3″ (1.0mgon)	5″ (1.5mgon)
Diameter of circle		71mm
Tilt Correction
Type		Dual axis
Method		Liquid type
Compensating range		±4′
Correction unit		1″ (0.1mgon)
Computer unit
OS		MS-DOS® VER.3.22
Internal memory System memory Program memory Main memory Application program & data memory		FEEPROM 512KB FEEPROM 1MB SRAM 640KB FEEPROM 4MB
Display		Graphics LCD 40 characters × 10lines (240 × 80 Dots) w/backlight
Calendar clock		Provided
Card system (Type I/II)		PC Card Standard 95 Max./32MB
Interface
Serial I/F Parallel I/F		For computer:RS-232C(6 pin) For RC-2II:RS-232C(4 pin) For printer:Centronics Standard (12 pin)
Other
Instrument height		196mm
Level sensitivity Circular level Plate level		10″ / 2mm 30″ / 2mm
Optical plummet Magnification Focusing range Image		3 × 0.5m to infinity Erect
Tracking indicator		Provided
Dimension		211(L) × 229(W) × 325(H)mm
Weight Instrument(with battery) Plastic Carrying Case		GPT-8000A series:7.6kg 5.4kg
Durability Dust/Water protection Ambient Temperature Range		IP54 -20°C to + 50°C
Laser class		Class 2 (Class II)
Power Source
On-board battery BT-56Q Output voltage Capacity Maximum operating time (at +20°C) Angle and distance measurement Auto tracking measurement Weight		7.2V 4.0Ah(Ni-MH) Approx. 4.0 hours Approx. 2.5 hours 0.4kg
Battery Charger BC-27BR/27CR Input voltage Frequency Recharging time (at +20Åé) Ambient temperature range Weight Discharging function		AC 120V (BC-27BR), 230V (BC-27CR) 50/60Hz 2.5hours +10°C to 40°C 0.4kg Yes

*1 : The air condition is stable and prism is staying Automatic Collimation/racking accuracy is available only for prism use except for reflector.
*2 : Sight haze with visibility about 20km moderate sunlight with light heat shimmer.
*3 : Measurement distance: No more than 500m, When kodak gray card(white surface) is used.
*D : measuring distance (mm)
** : Standard deviation based on DIN18723