Omega-vehicle-security OMG-USB-DIO48 Manuel d'utilisateur télécharger pdf (Page 8)

Technical

OMG-USB-DIO48 Page 4

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

RP3 Port A1

RP2 Port B1

RP1 Port C1

RP6 Port A2

RP5 Port B2

RP4 Port C2

Figure 2- Pull Up Resistors

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Omega-vehicle-security OMG-USB-DIO48 Manuel d'utilisateur Page 8