User guide

Chassis Overview 9
2.5 Backplane overview
The PXIS-3320 chassis comes with a 6U, 15-slot PXI backplane
that supports one PXI system controller and 14 PXI/CompactPCI
peripheral modules. This section illustrates the functions of the
backplane.
Figure 2-6: Backplane functions
System Controller Slot
As defined by PXI specifications, the system controller slot occu-
pies Slot 1 of the chassis. The system slot occupies two units of
slot space and accommodates either a 1-slot or 2-slot 6U PXI/
cPCI system controller. It is recommended that you use ADLINK
cPCI-6840 and cPCI-6860A system controller for the PXIS-3320
chassis.
PXI Trigger Bus Segment and PCI Bus Segment
PXI Star
Clock 10 MHz Buffer Circuitry
S
y
stem Controller
1
Star Trigger Controller
2
Peripheral slot
3
Peripheral slot
4
Peripheral slot
5
Peripheral slot
…
Local Local Local Local
Peripheral slot
13
Peripheral slot
14
Local
B
Local