3 trigger source and trigger modes, Trigger source and trigger modes, Figure 3-3 – ADLINK PCIe-9529 User Manual

Page 32: Trigger architecture

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Operations

3.3 Trigger Source and Trigger Modes

Figure 3-3: Trigger Architecture

The PCIe-9529 requires a trigger to implement acquisition of data.

Configuration of triggers requires identification of trigger
source. The PCIe-9529 supports internal software trigger, external
digital trigger and SSI Bus Number 5 as well as analog trigger.

Software Trigger

The software trigger, generated by software command, is

asserted immediately following execution of specified function
calls to begin the operation.

External Digital Trigger

An external digital trigger is generated when a TTL rising edge

or a falling edge is detected at the SMB connector on the front
panel. As shown, trigger polarity can be selected by software.
Note that the signal level of the external digital trigger signal
should be TTL compatible, with minimum pulse width 10ns.

Trigger Source Mux

Analog

Trigger

SSI BUS [5]

SSI_AD_TRIG

Software Trigger

Analog CH0

Analog CH1

TRG IN

SMB Connector

Digital Trigger Input

Trigger

Decision

SSI BUS [5]

SSI_AD_TRIG

To Internal

Circuit

Analog CH2
Analog CH3

Analog CH4

Analog CH5
Analog CH6
Analog CH7

Analog

Trigger

Selection

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