PXIe-6674T   PXI Synchronization Module

Description

PXIe-6674T   PXI Synchronization Module

NI’s PXI timing and synchronization modules enable a higher level of synchronization on the PXI platform
through high-stability clocks, high-precision triggering and advanced signal routing. Implementing timing
and synchronization hardware can vastly improve the accuracy of measurements, provide advanced
triggering schemes, and allow synchronization of multiple devices for extremely high-channel-count
applications. NI’s portfolio includes both signal-based and time-based solutions to deliver the advantages
of synchronization to numerous applications.

PXIe-6674T

Applications requiring highly reliable and consistent clock signals require a highly stable oscillator to avoid
clock inaccuracies. For an NI PXI Express chassis, the oscillator is accurate to 25 parts per million (ppm).
Inserting an NI PXI timing and synchronization module into the system timing slot of the chassis enables
the user to replace this backplane system reference clock using the higher accuracy oscillator of the
module. The PXIe-6672 and PXI-6683 modules contain a temperature-compensated crystal oscillator
(TCXO) which can achieve accuracies better than 4 ppm. The PXIe-6674T features an oven-controlled
crystal oscillator (OCXO) with an accuracy of 80 parts-per-billion (ppb). Note that the PXI-6683H contains
the same oscillator as the PXI-6683, but due to its hybrid connectivity is not able to override the
backplane clock.

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