GPS, IEEE 1588, and IRIG-B Timing and
Synchronization Modules for PXI and PXI Express
NI PXI-6682, NI PXI-6682H
◾
◾
Synchronize PXI and PXI Express
systems using GPS, IEEE 1588-2008,
IRIG-B, or PPS
◾
◾
Available for PXI systems, PXI-6682,
and for PXI Express systems, PXI-6682H
◾
◾
Onboard routing of internal and
external clock and trigger signals
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◾
Can be used as PXI slot 2 star
trigger controller (not available
on PXI-6682H)
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Onboard high-stability 10 MHz
reference (1 ppm)
Operating Systems
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◾
Windows 7/Vista/XP
Recommended Software
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◾
LabVIEW
◾
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LabWindows
™
/CVI
Driver Software (included)
◾
◾
NI-Sync
PXI System Configuration
◾
◾
Complete PXI system configuration
at
ni.com/pxiadvisor
>> For complete specifications and compliance information, see
appendix A in the NI PXI-6682 user manual at
ni.com/manuals.
Overview
The NI PXI-6682 and PXI-6682H timing and synchronization modules synchronize
PXI and PXI Express systems using GPS, IEEE 1588, IRIG-B, or PPS to perform
synchronized events. You can use them to generate events and clock signals
at specified synchronized future times and timestamp input events with the
synchronized system time. When installed in slot 2 of a PXI chassis, the
NI PXI-6682 routes clock signals and triggers with low skew within a PXI chassis
Features
Front Panel Connectivity
CLK in
CLK out
General-purpose PFI lines
GPS, IEEE 1588, IRIG-B
Time References
GPS
IEEE 1588
IRIG-B
Programmable Voltage Threshold
Trigger Routing
Star trigger source (PXI_STAR)
PXI trigger bus (PXI_TRIG)
Onboard Clock Sources
10 MHz timebase
Programmable clock
1
1
2
or between multiple chassis, providing a method for synchronizing multiple
devices in a PXI system. Because of this, you can greatly improve the accuracy
of measurements, implement advanced triggering schemes, or synchronize
multiple devices and/or multiple chassis to act as a single system for high-
channel-count applications. Table 1 compares the features of different NI timing
and synchronization product offerings.
NI PXI-6653
NI PXIe-6672
NI PXI-6682/H
NI PXI-6651
NI PXI-6652
3
–
2 SMB
–
3
3
6 SMB
–
3
3
6 SMB
–
3
3
6 SMB
–
3
2
3
3 SMB
3
–
–
–
3
–
–
–
3
–
–
–
3
–
–
–
3
3
3
3
3
3
3
3
3
3
3
3
3
2
3
–
–
TCXO (1 ppm)
DC to 105 MHz (DDS)
OCXO (50 ppb)
DC to 105 MHz (DDS)
TCXO (1 ppm)
DC to 105 MHz (DDS)
TCXO (1 ppm)
DC to 1.5 MHz
Frequency resolution of <0.075 Hz for NI PXI-6652, PXI-6653, and PXIe-6672. For NI PXI-6682, the clock period and duty cycle have to be a multiple of 10 ns.
Not available on the hybrid-compatible version of the module, the PXI-6682H.
Table 1. Features Comparison for Various NI Timing and Synchronization Modules Including the PXI-6682 and PXI-6682H
NI [ NATIONAL INSTRUMENTS CORPORATION ]
