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Configuration and Installation Chapter 3
VXI-MXI User Manual 3-10 © National Instruments Corporation
VMEbus Timeout Chain Position
The VME BTO Chain Position jumper block indicates the location of the VXI-MXI interface in
relation to other VXI-MXIs installed in the mainframe. If only one VXI-MXI is in the system,
set the jumper block to one of the configurations shown in Figure 3-8.
W7
a. One VXI-MXI, in Slot 0
(Default Setting)
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VME BTO
Chain Position
W7
b. One VXI-MXI,
Non-Slot 0
VME BTO
Chain Position
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Figure 3-8. VMEbus Timeout; One VXI-MXI in Mainframe
When you have multiple VXI-MXI modules installed in adjacent slots, the VXIbus local bus is
used to send a signal to the VXI-MXI with the VMEbus BTO to indicate that an outward
MXIbus transfer is in progress. The following figures show how to configure the VME BTO
Chain Position jumper block to select how the VXIbus local bus is used to disable the VMEbus
timeout during outward MXIbus transfers.