Synchronization Via External Wiring - Advantech PCIE-1841 User Manual

1ms/s/ch, 18-bit, simultaneous analog input card

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3.4.1

Synchronization via External Wiring

One of the devices is selected to be the source device, and others are follower

devices. The source device may generate trigger and clock signals internally, or

accept them from external sources. It then routes these signals to the output termi-

nals and sends them to all the follower devices through external wiring for synchro-

nized acquisition. To synchronize more than two devices, both daisy-chain and star

topology can be used as shown in Figure 3.7 and Figure 3.8, respectively. Star topol-

ogy reduces intermediate signal delay between devices. However, it also introduces

signal degradation if too many loads are present for one signal source. It is recom-

mended to keep the number of loads for one signal source as three or fewer.

Figure 3.7 Multiple device synchronization with daisy-chain topology

Figure 3.8 Multiple device synchronization with star topology

PCIE-1841 User Manual

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