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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 —

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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National Instruments NI PXI/PCI-5114 Manual do Utilizador Página 12