-7-
OPERATION
Initial Operation
!
WARNING
Protect the instrument
against moisture and
direct sun light.
Do not subject the instrument to extreme
temperatures or variations in temperature.
As an example, do not leave it in vehicles
for long time. In case of large variations
in temperature, allow the measuring tool
to adjust to the ambient temperature
before putting it into operation.
In case
of extreme temperatures or variations
in temperature, the accuracy of the
measuring tool can be impaired.
Avoid heavy impact or falling of the
instrument.
After heavy exterior impact on
the instrument, an accuracy check should
always be carried out before continuing
to work.
Setting Up Instrument
!
WARNING
It is important that the
tripod is set up firmly.
Make sure that the tripod points are well
into the ground.
On paved surfaces, be
sure the points hold securely.
The legs should have about a 3-1⁄2 foot
spread, positioned so the top of the tripod
head appears level.
If using a tripod with adjustable legs, be
sure the leg clamps are securely hand
tightened.
Before setting up your instrument, be sure
clamps are loosened.
Attach the instrument to the tripod
securely, hand tightening the instrument
base to the 5/8-11 tripod head.
Setting Up Over a Point
!
WARNING
Never use force on any
parts of the instrument.
All moving parts will turn freely and easily
by hand.
The LT8-300LTULP is equipped with a
laser plummet.
This eliminates the need to use a plumb
bob. The instrument is set up over
a reference point by using the laser
plummet beam (LT8-300LTULP).
Move the tripod and instrument over the
approximate point. (Be sure the tripod
is set up firmly again. Loosen leveling
screws and shift the instrument laterally
until the instrument is positioned directly
over the point.
To switch ON the laser plummet, press
and release the ON switch
16
. A laser
point will project through the center of the
instrument to the reference point (a stake
on the ground).
- Line up the tripod over the reference
point.
- Remove the plumb bob hanger from
the center stud of the tripod.
- Attach the instrument to the tripod.
- Level the instrument.
- Line up the laser point with the
reference point.
If necessary, the instrument can be
shifted by loosening the tripod center stud
and sliding the instru ment from side to
side for proper positioning.
Leveling the Instrument
Set the instrument leveling screws.
Turn down the leveling screws until firm
contact is made with the instrument base.
!
CAUTION
Do not overtighten the
leveling screws.
It is
very possible to overtighten the leveling
screws. Only a firm contact between the
screws and the base is necessary. If the
instrument shifts on the base, turn down
the screw more firmly by hand.
Leveling the instrument so the vial bubble
remains centered through a 360° rotation
of the telescope is the most important
operation in preparing to use your
instrument.
