Topcon AP-L1A - Page 124

22. SPECIFICATIONS
22-3
Angle Measurement
Method : Incremental reading
Detecting system :
Horizontal angle : 2 sides
Vertical angle : 2 sides
Minimum reading : 1"/5" (0.2mgon/1mgon,0.01mil/0.1mil) reading
Accuracy : 2"(Standard deviation based on DIN 18723 in 1"reading )
Diameter of circle : 71mm
Tilt Correction (H/V angle)
System : Automatic correction in 2 axis (Correction On / OFF)
Method : Liquid type
Compensating Range :
3'
Correction unit 1"
Wireless Communication
Method : Depends on the market.
Communication range8
: Depends on the market.
8 The communication distance will be determined by the circumstances of instrument occupation
and/or radio condition. Refer to the instruction manual in detail.
Others
Operating Temperature limit :
-20 ~+50C (Avoid not to be condensed drops)
(-4 ~+122F)
Storage Temperature limit :
-20 ~+60C (Avoid not to be condensed drops)
(-4 ~+140F)
Instrument height : 242mm (9.53in) 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(91mm
 /1.3m)
Communication system :
COM.1 : Based on RS-232C (3 lines system)
COM.2 : Based on RS-232C (AP-L1AN)