Product Principle 4-5
4.2.3 Engine Board
Figure 5 Principle Diagram of Engine Board
The hardware circuit of engine board is shown in the figure above.
Function:
 Distribute the clock.
 Provides the control and management function of probe related.
a) Probe online, IDs, hot-plug.
b) Control of interior circuit of the probe, such as high-voltage switch, parallel turning, Cable
Driver, etc.
 Corresponding control signal of the probe board:
a) Control of the high-voltage (only applicable for the physical channel less than 128, Plato is
not equipped with the function).
b) Configuration of the CPLD on the probe.
c) SPI communicate with probe
 Responsible for the module resetting, online upgrade, the management of module information.
 Communication and control of the accessories related with image scan, the accessories
include:
a) 4D driving function module; it is an optional independent module, which belongs to the
engine board.
b) Physiological signals function module.
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