GE Vivid 3N Pro Series, Руководство по обслуживанию

Страница: 174 / 598

GE M
EDICAL
S
YSTEMS
D
IRECTION
FK091075, R
EVISION
04 V
IVID
3N P
RO
/E
XPERT
S
ERVICE
M
ANUAL
5-12 Section 5-4 - Front End
5-4-3-5 Transmit Signal Path
The transmit signal is configured via the operating mode that was selected by the user. When this mode
is selected, it sets those operating parameters for the FEC, and the FEC sends a signal to the high
voltage power supply (HVPS) to program one of the supplies (HVPS1 or HVPS2).
Once the signal is transmitted, it is received by the transmit pulsor (TP) which is a switching device that
will propagate the signal between different elements of the probe. The propagation of that signal
depends on the way in which the FEC programs the Front board RAM table.
The signal from the HVPS comes in to the TP; the TP then generates a signal to the probe (connected
to the Front board), in accordance with a command generated in Timing Pulse Generator (TPG). The
TPG operates according to tables in the RAM table - see
Figure 5-6 on page 5-12.
Figure 5-6 Transmit Signal Path Block Diagram
Front Board Front Board