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Introduction

The NI PXI-6683 and NI PXI-6683H timing and synchronization modules synchronize PXI and

PXI Express systems using GPS, IEEE 1588, IRIG-B, or PPS. The NI PXI-6683 Series boards

also support synchronizing the system time of an RT system. The NI PXI-6683 Series boards

can generate triggers and clock signals at programmable future times and timestamp input events

with the synchronized system time. The NI PXI-6683 Series boards feature an on-board TCXO

that can be disciplined to GPS, IEEE 1588, IRIG-B, or PPS for long term stability. The

NI PXI-6683 Series boards also support routing of clock signals and triggers with low skew

within a PXI chassis or between multiple chassis, providing you a method for synchronizing

multiple devices in a PXI system.

The NI PXI-6683 has a full PXI connector, giving full PXI timing slot functionality. The

NI PXI-6683H is designed to allow installation in a hybrid slot in a PXI Express system;

this means some of the PXI Timing slot features are not available in the NI PXI-6683H. If

synchronized low-skew triggers (Star triggers) or a disciplined 10 MHz clock are required

in a PXI Express system, the NI PXI-6683H can be combined with an NI PXIe-667x timing

module to provide this functionality.

What You Need to Get Started

To set up and use a NI PXI-6683 Series Timing and Synchronization Module, you need the

following items:

 NI PXI-6683 Series Timing and Synchronization Module

 NI PXI-6683 Series User Manual

 NI-Sync CD

 One of the following software packages and documentation:

–LabVIEW

– LabWindows

™

/CVI

™

– Microsoft Visual C++ (MSVC)

 PXI or PXI Express chassis with an appropriate slot (full PXI slot for NI PXI-6683 and

NI PXI-6683H, or PXIe hybrid slot for NI PXI-6683H)

 PXI or PXI Express embedded controller or a desktop computer connected to the PXI or

PXI Express chassis using MXI hardware

National Instruments PXI-6683 Series User Manual

Questions and Answers: