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5.2 Horizontal Collimation Error C
If the telescope’s sight line isn’t perpendicular to the horizontal axis, the
collimation error will appear. The assembling, transportation and
operation will cause this error.
If the collimation error isn’t over the permitted range, with the program
the instrument can correct this collimation error.
NOTE: After the program correction this deviation error is also on the
instrument.
1) Check
(1) Set-up the instrument on tripod or adjustment platform and leveling
accurately.
(2) Aim at the cross-hairs of collimator or the obvious target at a distance.
Get the face left angle reading H1 and the face right angle reading Hr.
(3) Calculating the horizontal collimation error C according to C=
（
Hl-
Hr±180°
）
/2,if C<8″, no adjustment will be necessary. If C>8″, proceed with
the following adjustment.
2) Adjustment by program:
Set-up the instrument on tripod or adjustment platform, and leveling
accurately.
Procedures:
1. Power on and enter into INST
Setting. On the screen tap ◄ or ►
keys until Collimation displays, tap
it to display collimation error and
vertical index error setting menu.
Summary of Contents for LPG-300 Series
Page 1: ...Basic Instruction Manual Total Station LGP 300 series LGP 302N LGP 305N TI Asahi Co Ltd...
Page 2: ...2...
Page 59: ...42...
Page 63: ...46...
