User`s manual

Setting the Interrupt Priority
For most applications where the breadboard module is installed in an
Agilent 75000 Series C mainframe, the interrupt priority jumper does not
have to be moved. This is because the VXIbus interrupt lines have the same
priority, and interrupt priority is established by installing modules in slots
numerically closest to the command module. Thus, slot 1 has a higher
priority than slot 2, slot 2 has a higher priority than slot 3, and so on.
Refer to Figure 2-13 to change the interrupt priority. You can select eight
different interrupt priority levels. Level 1 is the lowest priority and Level 7
is the highest priority. Level X disables the interrupt. The module’s factory
setting is Level 1. To change, remove the 4-pin jumper (Agilent P/N
1258-0247) from the old priority location and reinstall in the new priority
location. If the 4-pin jumper is not used, the two jumper locations must
have the same interrupt priority level selected.
Figure 2-13. Setting the Interrupt (IRQ) Priority
24 Configuring the Agilent E1490C Chapter 2