Chapter 3
Theory of Operation
Trimble S, VX, SPS & RTS Service Manual3 - 20 P/N 57150002, Revision 5.0
F
TCU attachment
The TCU attachment is the interface between the Trimble S6 instrument and the Trimble CU.
The TCU attachment is not available on the Trimble S3 instruments. The Trimble S3 Robotic Total
Station is equipped with a Face 1 cover instead of the TCU attachment. The Trimble S3 Servo/
Autolock Total Stations is equipped with a fixed control panel.
Location of TCU attachment
Fig. 3-18 TCU attachment location
Function description
The TCU attachment includes:
• FPB board
• Balance weight
• Replaceable lock for the TCU
TCU attachment