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NI PXI/PCI-5114 Specifications 12 ni.com
TClk Specifications
National Instruments TClk synchronization method and the NI-TClk driver
are used to align the sample clocks on any number of SMC-based modules
in a chassis. For more information about TClk synchronization, refer to the
NI-TClk Synchronization Help, which is located within the NI High-Speed
Digitizers Help.
• Specifications are valid for any number of modules installed in one
NI PXI-1042 chassis.
• All parameters set to identical values for each SMC-based module.
• Sample Clock set to 250 MS/s and all filters are disabled.
• For other configurations, including multichassis systems, contact
NI Technical Support at
ni.com/support.
Note Although you can use NI-TClk to synchronize nonidentical modules, these
specifications apply only to synchronizing identical modules.
Specification Value Comments
Intermodule SMC Synchronization Using NI-TClk for Identical Modules (Typical)
Skew 500 ps Caused by clock and analog
path delay differences.
No manual adjustment
performed.
Skew After Manual
Adjustment
< 20 ps For information about
manual adjustment, refer
to the Synchronization
Repeatability Optimization
topic in the NI-TClk
Synchronization Help.
For additional help with the
adjustment process, contact
NI Technical Support at
ni.com/support.
Sample Clock
Adjustment
Resolution
< 20 ps —