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Chapter 1
Getting Started
Trigger Bus
All slots share eight PXI trigger lines. You can use these trigger lines in a variety of ways. For
example, you can use triggers to synchronize the operation of several different PXI peripheral
modules. In other applications, one module located in slot 2 can control carefully timed
sequences of operations performed on other modules in the system. Modules can pass triggers
to one another, allowing precisely timed responses to asynchronous external events the system
is monitoring or controlling.
System Reference Clock
The PXI-1036/PXI-1036DC supplies the PXI 10 MHz system clock signal (PXI_CLK10)
independently to each peripheral slot. An independent buffer (having a source impedance
matched to the backplane and a skew of less than 250 ps between slots) drives the clock signal
to each peripheral slot. You can use this common reference clock signal to synchronize multiple
modules in a measurement or control system. You can drive PXI_CLK10 from an external
source through the PXI_CLK10_IN pin on the P2 connector of the star trigger slot. Refer to
Table A-4,
P2 (J2) Connector Pinout for the Star Trigger Slot
. You must manually switch S1 on
the chassis backplane to enable or disable routing an external clock to peripheral slots.
