User's Manual

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constant K value. Such as: the K has been measured as ‘-5’
according to the method above, and the original instrument
constant is ‘-20’, so the new value should be set as ‘-20-(5)
=-15’; Input ‘-15’ through "menu-> 6->2" and then confirm.
Use the vertical line of the reticle to orientate, make A, B
and C at the same line accurately. There must be a clear mark for
point B on the ground to focus.
Whether the prism center of the point B coincide with the
instrument center is the guarantee of checking the accuracy, so,
you have better use tripod and all-purpose tribrach, for example,
if you change the three-jaw type prism connector with tribrach,
keep the tripod and tribrach stable, just change the prism and the
part above the tribrach of instrument, and it can reduce the error
of misalignment
13.9 The parallelism of collimation axis and
photoelectricity axis
Checkout
1. Place a reflector prism 50 meters away from the
instrument;
2. Focus on the reflecting prism center with telescope
crosshair accurately;
3. Check whether the telescope crosshair center coincide
with the emission photoelectricity axis center, if they coincide on
the whole we can say it qualified;
Calibration
If the telescope crosshair center deviates from emission
photoelectricity axis center largely, send it to professional repair
and calibration department.