GE Vivid 3N Pro Series, Руководство по обслуживанию

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GE M
EDICAL
S
YSTEMS
D
IRECTION
FK091075, R
EVISION
04 V
IVID
3N P
RO
/E
XPERT
S
ERVICE
M
ANUAL
Chapter 5 Components and Function (Theory) 5-23
5-4-9 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.
5-4-9-1 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 5-13 RFT Processor Board
To
Image Port
Board
RFT Board