Magma PEHIFX1 User's Guide download pdf (Page 40)

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32 Appendix B DC Power Information

In this configuration, you have fewer “Toll Booths” (PCI Bridges) to pass

through; therefore there are fewer opportunities for concern.

For clarification, it is necessary to understand that the amount

of latency caused by any PCI Bridge (even those built into a 3

Party PCI card or the computer motherboard itself) is negligible

(“nanoseconds”) and will not produce any visible effect on most

systems. It is only mentioned here because on a few rare

configurations which use some unique PCI cards with special

software drivers, the total number of PCI buses that the data

must pass through COULD make a difference. See Chapter 5

Troubleshooting for more information if you suspect this could

be an issue with one of your specialty PCI cards.

Verify your configuration

Before you start installing your PCI cards (refer to Chapter 4 for more

information), you should confirm that everything is in proper working

order. Refer to

Chapter 3 Verify Installation for guidance in verifying the

proper installation of your Expansion System. The following image

shows the Windows Device Manager display when a Windows PC has

2 Expansion Systems connected in a “Fan-Out” configuration.

Windows Device Manager with 2 PCI to PCI Expansion Systems Installed

in a “Fan-Out Configuration.

The following image shows the Apple Profiler display when a MAC has

2 Expansion Systems connected in a “Fan-Out” configuration

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Magma PEHIFX1 User's Guide Page 40