GE MEDICAL SYSTEMS PROPRIETARY TO GE
D
IRECTION 2294854-100, REVISION 3 LOGIQ™ 9 PROPRIETARY MANUAL
Chapter 5 Components and Functions (Theory) 5-9
5-3-2-4 TD, TD4, TD5 (Time Delay) Boards (8)
Major functions of the TD boards are:
- Transmitter
- Analog Receive
- A/D (Analog to Digital conversion)
- Digital Receiver (Rigel Beamformer Chip)
- Control & Timing
The TD (Time Delay) boards send 128 transmit signals to the XDIF board. The 128 receive channels
from the RF board get low pas filtered, converted from analog to digital and then use the Rigel
beamformer chip to generate complex digital data signals representing one or two beams of ultrasound
echo information sent to the EQ board.
Figure 5-8 Basic TD Board Functions
Figure 5-9 Basic TD Input/Output Signals
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