ADLINK Technology NuIPC cPCI-6760D Series, Руководство пользователя

Страница: 119 / 128

106 Watchdog and Utilities
Insertion process:
1. Insert the peripheral board into the card guide.
2. The peripheral board front panel is discharged to chassis
ground through a bleed resistor.
3. The peripheral board logic ground is discharged to
chassis ground through a bleed resistor.
4. The bleed resistor breaks contact with chassis ground.
Logic ground is again isolated.
5. The front panel makes low resistance contact with
chassis ground through the card guide.
6. The peripheral board contacts long pins on backplane,
and begins to contact ground, +5V, +3V, and V(I/O) pins.
7. The peripheral board is in an unstable state while pins
are first mated. This duration can potentially be infinite if
the board is just marginally connecting the longest pins.
8. Enough pins are connected that a stable early power
can be achieved. Hardware puts the Hot Swap (blue)
LED on the peripheral board to the ON state.
9. The peripheral board contacts the medium length pins
on the backplane. The peripheral board is now receiving
the PCI clock.
10.The peripheral board contacts the short BD_SEL# pin.
This pin is grounded on the backplane and pulled high
by a pull-up resistor on the peripheral board. Its
assertion indicates that the peripheral board has been
fully inserted into the backplane.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com