Omega-engineering OMG-PCI-DIO48 Manual do Utilizador descarregar pdf (Página 10)

Technical Description

OMG-PCI-DIO48 Page 6

Pull Ups

Ten pin bussed resistor packs are installed to provide pull-ups to the input ports. These are

installed on all ports. The pull-up resistor packs are rated at 10K ohms. Figure 2 below provides the

bussed resistor and corresponding port. The resistors insure that no line is floating which is not

connected. This provides consistent biasing on all un-terminated lines.

Bussed Corresponding

Resistor Port Resistor Port

RP4 Port A1 RP1 Port A2

RP5 Port B1 RP2 Port B2

RP6 Port C1 RP3 Port C2

Figure 2-Pull Up Resistors

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 31 32

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Omega-engineering OMG-PCI-DIO48 Manual do Utilizador Página 10