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FEMA US&R Response Sys/U.S. Army Corps of Engineers
STRUCTURES SPECIALIST SKILLS TRAINING
October 2007
TST – Total Station Training
There are four BMS screens which are viewed
in order by pressing the DSP key repeatedly.
When the NPL-352 is used as a theodolite, only
the first screen is needed.
After leveling the instrument with the bull's-eye level, turning it on, and before
tilting the telescope, the instrument may need to be fine leveled using the
electronic angle compensators. Fine leveling is done using the three leveling
screws under the leveling base. Again, return to the BMS screen by using the
ESC key and tilt the telescope to establish the zero zenith (vertical) angle.
Monitoring points with the theodolite is done by
sighting on a point to be monitored and
recording the horizontal angle (HA) and the
vertical angle (VA). Several points can be
monitored from a single location this way. As
long as the instrument is not moved, this can
be an adequate method of monitoring a structure. If the instrument must be
removed from its location, it must be reset exactly in its horizontal and vertical
location or the previous monitoring data cannot be repeated.
Measurement Basics and Theodolite Use Page 11
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