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FSIP Installation Prerequisites
Note
and work out concentrically from there. This will help to ensure that rejection of electromagnetic
interference (EMI) is maintained.
All interface processors have ejector levers that allow you to firmly seat an interface processor in the
interface processor slot (see Figure 8). The function of the ejector levers is to align and seat the card
connectors in the backplane. Failure to use the ejector levers and insert the interface processor
properly can disrupt the order in which the pins make contact with the backplane.
Follow the installation and removal instructions carefully, and review the following examples of
incorrect insertion practices and results:
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It is also important to use the ejector levers when removing an interface processor to ensure that the
board connector pins disconnect from the backplane in the logical sequence expected by the system.
Any processor module (interface processor or RSP) that is only partially connected to the backplane
can hang the bus. (Detailed steps for correctly installing and removing an interface processor follow
in the section "Interface Processor Replacement Procedures.")
14 Fast Serial Interface Processor (FSIP) Installation and Configuration
We recommend that you install interface processors starting with the slots closest to the RSPs
Using the handle to force the interface processor all the way into the slot can pop the ejector
levers out of their springs. If you then try to use the ejector levers to seat the interface processor,
the first layer of pins (which are already mated to the backplane) can disconnect and then remate
with the backplane, which the system interprets as a board failure.
Using the handle to force or slam the interface processor all the way into the slot can also damage
the pins on the board connectors if they are not aligned properly with the backplane.
When using the handle (rather than the ejector levers) to seat the interface processor in the
backplane, you might need to pull the interface processor back out and push it in again to align
it properly.
Even if the connector pins are not damaged, the pins mating with and disconnecting from the
backplane will cause the system to interpret a board failure. Using the ejector levers ensures that
the board connector mates with the backplane in one continuous movement.
Using the handle to insert or remove an interface processor, or failing to push the ejector levers
to the full parallel position, can leave some (not all) of the connector pins mated to the backplane,
a state that will hang the system. Using the ejector levers and making sure that they are pushed
fully into position ensures that all three layers of pins are mated with (or free from) the backplane.
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