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Caution

 

Never touch the exposed pins of connectors.

To avoid such damage in handling the module, take the following precautions:

Ground yourself using a grounding strap or by touching a grounded object.

Touch the antistatic package to the metal part of the computer chassis before removing
the module from the package.

Remove the module from the package and inspect the module for loose components or any
sign of damage. Notify NI if the module appears damaged in any way. Do not install a
damaged module into the computer.

Store the PXIe-6674T in the antistatic envelope when not in use.

Software Programming Choices

When programming the PXIe-6674T, you can use NI application development environment
(ADE) software such as LabVIEW or LabWindows/CVI, or you can use other ADEs, such as
Visual C/C++.

LabVIEW features interactive graphics, a state-of-the-art interface, and a powerful graphical
programming language. The LabVIEW Data Acquisition VI Library, a series of virtual
instruments for using LabVIEW with National Instruments DAQ hardware, is included with
LabVIEW.

LabWindows/CVI is a complete ANSI C ADE that features an interactive video interface,
code generation tools, and the LabWindows/CVI Data Acquisition and Easy I/O libraries.

Safety Information

The following section contains important safety information that you must follow when
installing and using the product.

Do not operate the product in a manner not specified in this document. Misuse of the product
can result in a hazard. You can compromise the safety protection built into the product if the
product is damaged in any way. If the product is damaged, return it to National Instruments for
repair.

Do not substitute parts or modify the product except as described in this document. Use the
product only with the chassis, modules, accessories, and cables specified in the installation
instructions. You must have all covers and filler panels installed during operation of the
product.

Do not operate the product in an explosive atmosphere or where there may be flammable gases
or fumes. If you must operate the product in such an environment, it must be in a suitable rated
enclosure.

If you need to clean the product, use a soft, nonmetallic brush. The product must be
completely dry and free from contaminants before you return it to service.

PXIe-6674T User Manual

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© National Instruments

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3

Содержание PXIe-6674T

Страница 1: ...as follows Measurement hardware documentation This documentation contains detailed information about the measurement hardware that plugs into or is connected to the computer Use this documentation fo...

Страница 2: ...ompliance Information 36 WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS 36 Introduction The PXIe 6674T timing and synchronization module enables you to share clocks and triggers between module...

Страница 3: ...CVI is a complete ANSI C ADE that features an interactive video interface code generation tools and the LabWindows CVI Data Acquisition and Easy I O libraries Safety Information The following section...

Страница 4: ...y occur in electrical distribution systems The following is a description of measurement categories Measurement Category I is for measurements performed on circuits not directly connected to the elect...

Страница 5: ...ng software packages and documentation LabVIEW LabWindows CVI Microsoft Visual C MSVC PXI EMC filler panels National Instruments part number 778700 01 PXI Express chassis PXI Express embedded controll...

Страница 6: ...fully insert the module into the chassis 6 Screw the front panel of the device to the front panel mounting rail of the chassis 7 If adjacent slots are not populated use EMC filler panels to cover the...

Страница 7: ...erview This chapter presents an overview of the hardware functions of the PXIe 6674T Refer to Figure 2 on page 8 for a functional overview of the PXIe 6674T hardware PXIe 6674T User Manual National In...

Страница 8: ...ng PXI Express PXIe_CLK100 PXIe_DSTARA 0 16 OCXO CLK10 CLK100 PXIe_DSTARC 0 16 PXIe_DSTARB 0 16 PFI 0 Threshold DAC PFI 0 Driver Comparator Driver Comparator PFI 1 Threshold DAC LVDS Driver Receiver P...

Страница 9: ...PFI 4 LVDS 2 CLK OUT CLK IN 1 Access LED 2 Active LED 3 CLKOUT Connector 4 PFI 0 5 Connectors 5 CLKIN Connector Access LED The Access LED indicates the communication status of the PXIe 6674T Refer to...

Страница 10: ...ting If applicable check that the chassis fan air intake is not blocked and that the fan filters are clean Make sure that the ambient temperature around the chassis isn t above the rated temperature s...

Страница 11: ...able Function Interface which can be individually configured for either single ended operation or LVDS operation In LVDS mode the connectors are paired and can be programmatically set as either inputs...

Страница 12: ...OCXO is an extremely stable and accurate frequency source CLKIN In from front panel CLKIN is the signal connected to the SMA input connector of the same name CLKIN can be routed directly to PXI_CLK10_...

Страница 13: ...signals to and from these lines Note PXI_TRIG 0 5 are also known as RTSI 0 5 in some hardware devices and APIs However PXI_TRIG 6 7 are not identical to RTSI 6 7 PXI_STAR 0 16 In Out to from chassis T...

Страница 14: ...in advanced clock generation circuitry for generating clock signals from below 1 Hz to 1 GHz with very fine frequency resolution The clock generation circuitry is based on a direct digital synthesis D...

Страница 15: ...re has the advantage the PXI_CLK10 and PXIe_CLK100 are always sourced from the same reference oscillator and therefore it is impossible to lose PXI_CLK10 or PXIe_CLK100 by disconnecting the reference...

Страница 16: ...by using the CLKIN SMA on the front panel CLKIN is an AC coupled 50 terminated input to the PXIe 6674T In order to increase the amplitude of signals the CLKIN receiver can use the CLKIN circuitry fea...

Страница 17: ...al signal paths to connect the system timing slot to each PXI Express peripheral slot up to 17 peripheral slots These signals are PXIe_DSTARA PXIe_DSTARB and PXIe_DSTARC PXIe_DSTARA PXIe_DSTARA is use...

Страница 18: ...ork divides the 17 PXIe_DSTARA lines into four banks as shown in Table 5 on page 18 Table 5 PXIe_DSTARA Divisions Bank 0 Bank 1 Bank 2 Bank 3 PXIe_DSTARA 0 3 PXIe_DSTARA 4 7 PXIe_DSTARA 8 11 PXIe_DSTA...

Страница 19: ...FIs When enabled for LVDS operation the PFI_LVDS pair can be configured as either an input or an output PFI_LVDS lines can not be used as an input and output at the same time Because of the increased...

Страница 20: ...into a 50 load and is also AC coupled The sources available to be routed to CLKOUT differ depending on whether the low speed or high speed driver is used The sources available to the low speed driver...

Страница 21: ...tware Trigger are routed to SOURCE of each Selection Circuitry block SYNCHRONIZATION CLOCKS for PXI_STAR 0 16 PXI_TRIG 0 7 and PXIe DSTARB 0 16 Selection Circuitry Selection Circuitry Selection Circui...

Страница 22: ...outing operations must also define a third signal known as the synchronization clock Refer to the Choosing the Type of Routing section for more information on synchronous versus asynchronous routing F...

Страница 23: ...PFI inputs are programmable The input signal is generated by comparing the input voltage on the PFI connectors to the voltage output of software programmable DACs The thresholds for the PFI lines are...

Страница 24: ...vided by the second frequency divider 2m up to 512 Refer to Choosing the Type of Routing section for more information on the sychronization clock Note The PFI synchronization clock is the same for all...

Страница 25: ...Triggers The PXI triggers go to all the slots in the chassis All modules receive the same PXI triggers so PXI trigger 0 is the same for the system timing slot as it is for Slot 3 and so on This featur...

Страница 26: ...be matched to within 1 ns A typical upper limit for the skew in most NI PXI Express chassis is 500 ps The low skew of the PXI star trigger bus is useful for applications that require triggers to arriv...

Страница 27: ...ady logic high or low Backplane synchronization clock Refer to the Using the PXI Triggers section for more information on the backplane synchronization clock Choosing the Type of Routing The PXIe 6674...

Страница 28: ...chronous routing operation on the PXIe 6674T can be any of the following lines Any front panel PFI pin PFI 0 5 as single ended Any front panel PFI pin as LVDS PFI_LVDS 0 2 Any PXI star trigger line PX...

Страница 29: ...or example PXI_CLK10 all receiving devices can act on the trigger at the same time as shown in Figure 10 on page 29 Figure 10 Synchronous Routing to Multiple Destinations PXI_CLK10 Trigger Destination...

Страница 30: ...le methods to ensure this requirement is met go to ni com info and enter the Info Code SyncTriggerRouting Possible sources for synchronous routing with the PXIe 6674T include the following sources Any...

Страница 31: ...to an external reference clock the phase between the clocks can be adjusted The time between rising edges of PXI_CLK10 and the input clock is minimized using this constant Note The PXI_CLK10 phase is...

Страница 32: ...f the receiver the device suffering interference Relocate the transmitter the device generating interference with respect to the receiver Plug the transmitter into a different outlet so that the trans...

Страница 33: ...ace the product NI may use new or refurbished parts or products that are equivalent to new in performance and reliability and are at least functionally equivalent to the original part or product You m...

Страница 34: ...d Party Legal Notices You can find end user license agreements EULAs and third party legal notices in the following locations Notices are located in the National Instruments _Legal Information and Nat...

Страница 35: ...de dress Xilinx is the registered trademark of Xilinx Inc Taptite and Trilobular are registered trademarks of Research Engineering Manufacturing Inc FireWire is the registered trademark of Apple Inc L...

Страница 36: ...D TO DEATH PERSONAL INJURY SEVERE PROPERTY DAMAGE OR ENVIRONMENTAL HARM COLLECTIVELY HIGH RISK USES FURTHER PRUDENT STEPS MUST BE TAKEN TO PROTECT AGAINST FAILURES INCLUDING PROVIDING BACK UP AND SHUT...

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