Teledyne LeCroy PMC2PCI-64 - Manual (Page 3)

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INTRODUCTION
These PCI Active Extender boards allow HOT SWAPPING or LIVE INSERTION of Unit-Under-Test into
PCI bus. The PCI extender series supports the entire range of the PCI bus (32-bit, 64-bit, 3.3V, 5V, 66 Mhz
and even PCI Mezzanine). The “HOT SWAPPING” feature of these extenders eliminates the need for turning
the PC Off and On and repeated rebooting. This feature speeds up rework, characterization and test of Unit-
Under-Test in the development phase as well as production test. The elimination of the repeated power cycling
also helps prolong the system life and the hard disc operation. These Active Extenders use a new CMOS
technology for switching the signals On and Off (known as "Quick Switch"). These switches have a very fast
propagation delay, typically about 250 picoseconds, resulting in no timing degradation between the bus and
the Unit- Under-Test. The switches are also bidirectional allowing the entire address range to be supported for
both target and master type operation.
These Active Extender boards isolate all signals and voltages to the Unit-Under-Test, when the On-Off switch
is in the Off position. All voltages are ramped down and ramped up during the power down and power up in
order to eliminate any spikes. During the power down the signals to the bus become isolated as soon as the
main supply, +5V, reaches down to +3.0V. During the power up the signals stay isolated until the main
voltage is at least +3.0V.
These Active Extenders also allow for voltage margin testing of the Unit-Under-Test by allowing external
power supplies to replace the bus supplies as inputs to the Unit-Under-Test.
An on-board current-to-voltage converters allow measurement of the current drawn by the UUT at any time,
using just a voltmeter at the appropriate test points.
INSTALLATION
To install the Active Extender board, make sure to turn the PC power off. Insert the Active Extender in any
available slot and secure it's bracket to the main chassis. You are now ready to use your new extender board.
NOTE: If you are planning to use an external I/O signal to control the board, the On-Off switch must
be in the Off position and the dip switch must be in the CLOSED (ON) position.