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20-3
20 SPECIFICATIONS
Tilt Correction
Method : Automatic vertical and Horizontal index
: Liquid type
Compensating Range : ±4'
Correction unit : 1"(0.1mgon)
Others
Instrument height : 196mm (7.7 in) Base unit detachable
(Height from the tribrach dish to the center of telescope)
Level sensitivity
Circular level : 10'/2mm
Plate level : 30"/2 mm
Optical Plummet Telescope
Magnification : 3 ×
Focusing range : 0.5m to infinity
Image : Erect
Field of view : 4°
Optical communication
Laser class : Class 2 (Class ll) laser product
Dimension : 325 (H) × 229 (W) × 211 (L) mm
(12.8 (H) × 8.9 (W) × 8.3 (L) in)
Weight
GTS-820series : 7.5kg ( 16.6 lbs)
Plastic carrying case : 5.4kg ( 11.9 lbs)
Durability
Protection against water and dust : IP54 (with BT-56Q)
(Based on the standard IEC60529)
Computer unit
OS : MS-DOS Ver.3.22
Internal Memory
System memory : FEEPROM 512KB
Main memory : RAM 640 KB
Data memory : FEEPROM 2 MB
Program memory : FEEPROM 1 MB
Application program memory : FEEPROM 2 MB
PC Card Slot : Based on PC Card Standard 95
(Memory card or ATA card, Type l/ll)
Max. 32MB
Display and keyboard
GTS-821A : Both sides
GTS-822A : One side
GTS-823A : One side
GTS-825A : One side