Chapter 3
Theory of Operation
P/N 57150002, Revision 5.0 3 - 43 Trimble S, VX, SPS & RTS Service Manual
F
Base unit
The base unit is the horizontal rotating part and includes two Hirose connectors for power and
communication to the instrument.
Base unit together with the MSB board, angle disc and SCR board with magnets is named Horizontal
Turning Unit.
Location of base unit
Fig. 3-41 Base unit location
Function description
The base unit is assembled into one unit and not possible to open.
Base unit
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