30 Second-Generation Channel Interface Processor (CIP2) Installation and Configuration
Installation
Step 7
Use a screwdriver to tighten the two captive screws on the interface processor faceplate.
This prevents the interface processor from becoming partially dislodged from the
backplane and ensures proper EMI shielding. (These screws must be tightened to meet EMI
specifications.)
Proceed to the next section to attach the bus and tag and/or ESCON cables between the CIP2
interface ports and your channel.
Attaching the CIP2 to the Channel
The CIP2 can be connected to the channel using the bus and tag cables (for the PCA) and/or using
a fiber-optic ESCON cable with duplex connectors (for the ECA). Bus and tag and ESCON
connections each have their own special requirements. The following sections discuss bus and tag
and ESCON connections.
Attaching the Bus and Tag Cables
The PCA is connected using the bus and tag cable with 78-pin connectors (the Y cable) and the bus
and tag cables with 48-pin, type A connector blocks (the VA and VB cables). In general, a Y cable
attaches to the PCA on the CIP2, and the VA and VB cables attach to the remaining ends of the Y
cable.
Attaching the PCA to the Host Channel
Attach the PCA to the host as follows.
Caution
To reduce the potential for problems, you should have an authorized service
representative or other qualified service person perform the following procedure. To prevent
hardware problems with your host processor, all the channel connections must be tight. A loose
connection can cause the host processor or its channel to halt. All connections must be screwed
together.
Step 1
Vary offline the host channel to which the PCA will be attached.
For instructions on how to vary the host channel offline, refer to the documentation for your
operating system.
Caution
If the select/bypass switch is in the select position when the PCA connector is detached,
other devices on the channel and the mainframe operating system can be negatively affected.
