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Configuration and Installation Chapter 3
VXI-MXI User Manual 3-26 © National Instruments Corporation
If the daughter card will be the first or last device in the INTX chain (irrespective of the
VXI-MXI's position in the MXIbus chain), you should leave these terminators in place. If the
daughter card is not going to be an end device, remove all four terminating resistor networks
from their sockets. Store them in a safe place in case your system configuration changes. Figure
3-22 shows an example of a daisy-chained MXIbus and INTX system, including terminators.
MXIbus System
Controller
PC/AT
VXI
Mainframe
VXI
Mainframe
VXI
Mainframe
MXIbus Cable
62-pin MXIbus Connectors
Downstream
MXIbus
Terminator
VXI-MXI
VXI-MXI
VXI-MXIVXI-MXI
Upstream
MXIbus
Terminator
VXI
Mainframe
INTX Terminators
INTX Terminators
44-pin INTX
Connectors
Figure 3-22. INTX Terminator Example
Installation Instructions
Verify the following configuration considerations before installing the VXI-MXI:
• If installing the VXI-MXI in a slot other than Slot 0, verify that you have changed the
settings of the two VXIbus Slot 0 slide switches, the VME BTO Chain Position jumper, and
the CLK10 Source Select jumpers.
• Multiple VXI-MXIs must be installed in adjacent slots with proper VME BTO Chain Position
jumper settings, and the VMEbus BTO must be enabled on one of them.