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Calibrations
TPS400-5.0.1en
Calibrations
Determining Line-of-sight error and V-Index
The calibration contains the determination of the
following instrument errors:
•
Hz-collimation
•
V-index (simultaneously electronic level)
For determining the Hz-collimation or the V-index it
is necessary to measure in both telescope positions.
The procedure can be started in any telescope posi-
tion.
The user is guided clearly through the procedure. A
wrong determination of instrument error is thus elim-
inated.
The instruments are adjusted in the factory prior to
shipping.
Instrument errors can change with time and temper-
ature.
)
These errors should be determined before
the instrument is used for the first time, before preci-
sion surveys, after long periods of transport, before
and after long periods of work, and if the tempera-
ture changes by more than 10°C (18°F).
Before determining the instrument
errors, level-up the instrument using the
electronic bubble. The instrument should
be secure and firm, and should be
protected from direct sunlight in order to avoid
thermal expansion on one side only.
