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Installing VXI Instruments
WARNING
20 Getting Started
The HP E840xA mainframes have 13 slots labeled 0 through 12. Any VXI
instrument can be installed in any slot; however, slot 0 is reserved for
devices capable of providing the system's slot 0 functionality. This
functionality includes:
•
locating instruments installed in the mainframe
•
managing (arbitrating) data flow across the backplane
•
providing the system clock (SYSCLK - 16 MHz)
Examples of these devices are the HP E1406 Command Module and
embedded controllers such as the HP E623x series VXI Pentium PCs, the
HP RADEPC7B PC, and the HP E1497/E1498 V743 controllers.
Multiple instruments which combine to create a virtual instrument (e.g. a
scanning multimeter), and instruments which access the backplane local bus
should be installed in adjacent slots.
1. To prevent damage to the VXI instruments, turn off the mainframe
prior to installing the instruments.
2. Insert the instrument into the mainframe by aligning the instrument
with the card guides inside the mainframe. Slowly push the
instrument into the slot until it seats in the backplane connectors. The
front panel of the instrument should be even with the front edges of
the mainframe.
3. Tighten the retaining screws on the top and bottom of the module.
All instruments within the VXI mainframe are grounded through
the mainframe chassis. During installation, tighten the
instrument's retaining screws to secure the instrument to the
mainframe and to make the ground connection.
Chapter 1
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