GE MEDICAL SYSTEMS
D
IRECTION 2392751-100, REVISION 3VIVID™ 4 SERVICE MANUAL
Chapter 5 - Components and Function (Theory) 5-27
5-4-7 RF and Tissue Processor Board (RFT)
The RF and Tissue Processor Board (RFT) receives data from the BF1 Board in the Front End. Both
types of data samples (RF_MODE) are communicated to the RFT Board from the Front End Controller
Board, via the Front End Bus.
5-4-7-1 Control
The RFT Board has a local DSP with an external
EPROM. The DSP performs the following control tasks:
• Handles communication with the BE over the VME Bus and the PCI Bus.
• Updates filter coefficients and other parameters in the data path.
• When output events are received from the FEC, the RFT Board sets up the pipe link to output
control, for data tagging and transfer.
• During transfer of time motion data, the RFT Board creates a “time slot” data transfer, which
replaces the output event base transfer.
Figure 5-14 RFT Processor Board
To
Image Port
Board
RFT Board
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