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PXI-1036/PXI-1036DC User Manual
Star Trigger Slot
The star trigger (ST) slot is slot 2. This slot has dedicated equal-length trigger lines between slot
2 and peripheral slots 3 through 6 (refer to Figure 1-5). Slot 2 is intended for modules with ST
functionality that can provide individual triggers to all other peripheral modules. However, if
you do not require advanced trigger functionality, you can install any standard peripheral
module in this slot.
The star trigger slot can also be used to provide a PXI_CLK10 signal to the backplane. For more
information regarding PXI_CLK10, refer to the
Peripheral Slots
There are five peripheral slots, including the star trigger slot.
Local Bus
The PXI backplane local bus is a daisy-chained bus that connects each peripheral slot with
adjacent peripheral slots to the left and right (refer to Figure 1-5). For example, the right local
bus of slot 2 connects to the left local bus of slot 3, and so on.
The left local bus signal lines on slot 2 are used for star trigger and do not connect to slot 1. The
right local bus signal lines on slot 6 are not routed anywhere.
Each local bus is 13 lines wide and can pass analog signals up to 42 V between cards or provide
a high-speed TTL side-band digital communication path that does not reduce the PXI bus
bandwidth.
Initialization software uses the configuration information specific to adjacent peripheral
modules to evaluate local bus compatibility.
Figure 1-5.
PXI Star Trigger and Local Bus Routing
System Controller Slot [1]
Star
T
rigger/P
er
ipher
al Slot [2]
P
e
ripher
al Slot [3]
P
e
ripher
al Slot [4]
Local
Bus
Local
Bus
Star Triggers
PCI Arbitration and Clock Signals
P
e
ripher
al Slot [5]
P
e
ripher
al Slot [6]
Local
Bus
Local
Bus
