6.4.5. Configuring Data Streams - Blocked

This step is for users in the following categories:

• Map File: all SCX users
• Data Streaming: Blocked

For more information about user categories, see Section 6.2, Determining Installation Requirements.

After you select blocked data streaming, the SCX160 SCxbus Adapter configuration program prompts you to select a resource to block at this node (Figure 39). If the particular resource is not available, the program requests that another resource be selected.

Figure 39. Blocked Resource

The program's next action depends on whether the current node is the first node:

• If the current node is the first node being configured, the program calculates the time slots required to block the resource and displays the number on the screen. It suggests the minimum number of streams that need to be allocated to block the resource. This number can be accepted or a greater number of streams may be allocated for future expansion.

  Verify the accuracy of the Node Configuration Chart you completed in Section 6.2.2, Analyzing Node Configuration Requirements.

• If the current node is not the first node, the SCX160 SCxbus Adapter configuration program determines whether the streams blocked at Node 1 are enough to block the resource on this node. If it is not enough, the program prompts the user to select another resource or to exit the program, remove a board for that resource, and rerun the configuration program. If no resources will be blocked at this node, choose None.

The configuration program then calculates the number of time slots required for the non-blocked resources by node and displays this value on the screen. The minimum number of streams that need to be allocated for the non-blocked resources are also suggested. The value may be accepted as is, or a greater number of streams may be allocated to allow for future expansion.

Finally, a summary screen shows the data streams transmitted from the SCX160 board onto the SCbus, the data streams transmitted from the SCX160 board onto the SCxbus, and the data streams blocked on the node. If the configuration is acceptable, click Finish. Otherwise, click Cancel to exit the program.

Compare the number of time slots and data streams you recorded on the Node Configuration Chart (Figure 35) with those reported by the SCX160 SCxbus Adapter configuration program to verify your calculations.

Continue with Section 6.4.6, Configuring Clocking.

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