8-Port Serial PCI ACC Multiplexer Installation and User's Guide
> Chapter 1 OverviewMultiplexer Overview |
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Multiplexer FeaturesThe major features of the HP multiplexer are:
8-Port PCI Multiplexer Maximum Baud RatesAlthough the ACC MUX card can handle rates above 19.2 Kbps for RS-232 and 64 Kbps for V.35, it is the customer's responsibility to ensure that the cable type and length are chosen appropriately. Per Port
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Multiplexer ArchitectureThe 8-port PCI ACC Multiplexer is an intelligent microprocessor-based interface that supports a wide variety of serial data communication protocols. The architecture allows the protocols to be implemented as downloaded modules which enhance the flexibility of the interface. The multiplexer has sufficient memory to provide data buffering and configuration tables, as well as space for multiple downloaded protocol modules. Figure 1-1 "Block Diagram of the 8-Port PCI ACC Multiplexer" shows a functional block diagram of the multiplexer card. Figure 1-1 Block Diagram of the 8-Port PCI ACC Multiplexer Multiplexer Hardware RequirementsThe 8-port PCI ACC multiplexer consists of the major hardware components described in Figure 1-2 "HP Z7340A 8-Port PCI ACC Card with Interchange Panels" and shows the components and how they combine to provide the functionality of the ACC subsystem. Figure 1-2 HP Z7340A 8-Port PCI ACC Card with Interchange Panels
MultiplexerThe multiplexer (or MUX) installs as an I/O interface card in the HP e3000 computer. The MUX is a one-half length PCI card, which supports eight synchronous or asynchronous ports at speeds up to 128 Kbps on RS-232 and V.35 ports.Interchange PanelAn Interchange Panel acts as an intermediary between the MUX and the Packet Switching Network (PSN). Each individual interchange panel is designed for a specific serial communications standard, such as RS-232, and V.35 specifications.Rack Mounting PlateA rack mounting plate allows up to two interchange panels to be mounted in the HP e3000 computer system's rack. Panels can be mounted in any orientation.HP Z7325A MUX/Interchange Panel CableThe MUX connects to the interchange panel by a 160-conductor (28 AWG) cable, three meters (10.77 feet) in length. The cable has male connectors on each end, refer to Figure 1-3 "HP Z7325A Cable Connector (Male)". The signals for each of the pins are listed in Appendix A "Interchange Panels" Figure 1-3 HP Z7325A Cable Connector (Male)Octopus CablesTwo-meter octopus cables with a 160-conductor connector on one end and eight RS-232 or V.35 female connectors on the other end are also available for connecting the MUX and the Packet Switching Network. This cable replaces the 160-conductor cable and interchange panels for RS-232 or V.35 connections. Figure 1-4 "HP Z7340A 8-Port PCI ACC Card with Octopus Cable" shows the MUX card with an octopus cable.
Figure 1-4 HP Z7340A 8-Port PCI ACC Card with Octopus Cable
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