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Chapter 3
VXIpc 700 Series Configuration and Installation
VXIbus Slot 0/Non-Slot 0
Caution
Do not install a device configured for Slot 0 into another slot without
!
first reconfiguring it to either Non-Slot 0 or automatic configuration. Neglecting
to do this could result in damage to the device, the VXIbus backplane, or both.
a. Manual Non-Slot 0
Configuration
Trigger Input Termination
VXIpc 700 Series User Manual
The VXIpc-700 is configured at the factory to automatically detect if it is
installed in Slot 0 of a VXIbus mainframe. With automatic Slot 0 detection,
you can install the module into any VXIbus slot.
You can manually configure the VXIpc-700 for either Slot 0 or Non-Slot 0
operation by defeating the automatic-detection circuitry. Use the
five-position jumper W1 to select automatic Slot 0 detection, Slot 0, or
Non-Slot 0 operation. Figure 3-2 shows these three settings.
W1
b. Automatic Slot 0
Detection (Default)
When the VXIpc-700 is installed in Slot 0, it becomes the VXIbus System
Controller. In this role, it has VXIbus Data Transfer Bus Arbiter circuitry
that accepts bus requests on all four VXIbus request levels, prioritizes the
requests, and grants the bus to the highest priority requester. As VXIbus
System Controller, the VXIpc-700 also drives the 16 MHz VXIbus system
clock by an onboard 16 MHz oscillator.
As required by the VXIbus specification, the VXIpc-700 drives
the 10 MHz signal CLK10 on a differential ECL output when installed
in Slot 0. When not installed in Slot 0, the VXIpc-700 only receives the
CLK10 signal.
You can use jumper W12 to terminate the external trigger input SMB
with 50 Ω to ground. Figure 3-3a shows the default setting for a
non-terminated trigger input SMB. Use the setting of Figure 3-3b to
terminate the trigger input SMB.
W1
Figure 3-2. VXIbus Slot Configuration
3-4
W1
c. Manual Slot 0
Configuration
© National Instruments Corporation
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