KPXI-CON-900-01 Rev. A / January 2007
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C-5
KPXI System Controller User’s Manual
Appendix C: PCI-to-PXI, PXI-to-PXI Extension User’s Guide
Software installation
Once Windows XP/2000 has started, the Plug and Play function of the Windows system will find
the new KPXI-CON-PXIREM / KPXI-CON-PCIREM. If this is the first time installing the KPXI-
CON-PXIREM / KPXI-CON-PCIREM in your Windows system, you will be informed to input the
device information source. Please follow these steps to install KPXI-CON-PXIREM / KPXI-CON-
PCIREM.
For Windows XP/2000 users:
Step 1:
Insert the Keithley Instruments CD.
Step 2:
Execute
kpxireminstall.exe
to start the setup. The path is:
X:\PXI Extension\Wnt2kxp\kpxireminstall.exe
Where
X
is the drive letter of your CDROM)
Step 3:
This setup program will copy the necessary files to your hard drive automatically. When
the hardware installation process is complete, reboot the computer for the changes to take
effect.
Hardware installation
Jumper setting (only for KPXI-CON-PXIREM)
Spread spectrum jumper setting
When KPXI-CON-PXIREM plugged into the system slot, it provides a discrete clock signal to each
of the peripheral slot defined as a PCI clock (CLK0, CLK1, CLK2, CLK3, CLK4, CLK5, and CLK6).
An important feature of the KPXI-CON-PCIREM/KPXI-CON-PXIREM extension modules is that
they support 33MHz/66MHz clock operating environment. As system clock increase,
electromagnetic interference (EMI) becomes a challenge for the system designers.
KPXI-CON-PXIREM adopts a spread-spectrum clock generator to help user to deal with this
difficult task.
Spread spectrum clocking speeds up and slows down the clock within a few percent of its
fundamental frequency. By reducing the peak amplitudes, the system will more likely meet EMI
emission compliance standards. In other words, spread spectrum clocking distributes the energy
that was originally concentrated on one frequency over a wider band. This method dramatically
reduces the amount of EMI.
to turn on the spread spectrum clock generator.
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