User`s manual

E1406-4 : Set the Bus Request Level
The Command Module’s bus request level switch is set to 3 at the factory.
In most VXIbus systems and configurations, it is not necessary to change
this setting.
The bus request level determines the priority at which the Command
Module can request the use of the Data Transfer Bus. There are four bus
request levels to choose from: 0 - 3. Bus request level 3 has the highest
priority; bus request level 0 has the lowest priority.
See Appendix A, "Terms and Definitions," for more information on the Bus
Request Level.
E1406A
Bus Request Level
Location
Set the Bus Request Level by turning the dial with
a small flatblade screwdriver
Bus Request Level 0 - 3
Figure 2-6. Setting the Bus Request Level
2-6 Setting Up the E1406 Command Module C-Size Configuration Guide