Power Supply; Figure 27: Redundant Receiving Cards; Figure 28: Behind Hub Board - Redundant Power Supply With Wired Pdu With Pdu Shielding - NEC FA Series User Manual

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Receiving Cards

Receiving cards process the data from the Sending card (external video controller) and

distribute the signal to the Pixel cards. The Receiving cards work redundantly. In case of failure

of one Receiving card, the other Receiving card provides the picture.

Power Supply

In each module, two redundant Power supply units (PSU) connect through a Power distribution

unit (PDU) to run in parallel, where each deliver half of the required power. This mechanism

provides power and sufficient reserve. In a case of failure of one or the other unit, the

functional PSU can be delivered in full power from the remaining unit. In rare cases, where

both PSUs are defective, the Power supply units of the module have to be replaced.

The following components contribute to the power supply of a module:



2 Power supply units (PSU) (A)



1 Power distribution unit (PDU) (B1) with PDU shielding (B2): The PDU shielding protects

the high voltage components from being touched by accident. Do not remove while power

is connected!



2 Power supply interfaces to Hub board (C): Counter-part to the Hub board's four pin

connectors to supply the Hub board with power.

Figure 28: Behind Hub Board – Redundant Power Supply with Wired PDU with PDU Shielding

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