Spectra Precision FAST Survey Reference Manual - Manual (Page 142)

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to use the Offset button in Store Points, and then the Point method. You do a Read and enter 0 for all offsets, then
Store. Then change the description and tap Store again (no additional Read is necessary), and a second point with a
different description (or rod height, or offset) is stored. Some office software programs require distinct readings on the
same point to process multiple descriptions, in which case the use of Offsets to store multiple readings with one field
measurement is recommended.
 2-Point Offset
: This creates a 2-point 3D “vector”, where the offset direction, distance, and vertical offset are
computed from the delta N, delta E and Delta Z of the two points that are measured or entered. If Read Inst is
enabled, then the two points are measured in the field. If, instead, you wish to obtain the offset vector from two
points, then disable Read Inst and enter the two point numbers. The offset entered will extend the vector from point
“P2” in the direction of “P1” to “P2”. The vector offset will also impact the elevation that is calculated. This might
be used to calculate a point at the top of a cliff, for example, where you stand above the cliff top, pick up two points
on the slope to the cliff edge, and estimate the distance to the cliff face from the second point. The offset by two
points routine will write an SS record in the RW5 file (raw file), which enables re-processing.
 Settings
: The Settings tab appears with robotic total stations running remotely (from the prsim) and permits reading
the target height from a laser and accesses the entire range of laser devices found in the Peripherals menu option
under Equip.
Store Points (GPS)
Store Points is the principal data collection routine for GPS equipment. Store Points interacts with numerous settings,
including the feature codes, and will draw line work. The Store Points screen in GPS shows the cursor moving on the
screen in real-time. Shots can be taken anytime by pressing Enter. The screen will pan automatically, so you are
always in view as you move. Points will plot on the screen as shots are taken. See File, Feature Code List, for
discussion of drawing linework, symbols, Line Details and Point Details (option to re-measure existing points).
In GPS mode, Enter has only one function: Read & Store. The after-shot antenna height and description prompt can be
enabled in Configure (C or ALT-C from the Store Pints screen.). If you don't have the height and description prompt
turned on, then each shot is a single press of Enter, and you must enter antenna height, description, or point ID changes
prior to pressing Enter and taking the shot.