National Instruments PXI-6652 User Manual
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National Instruments PXI-6652 User Manual

National Instruments PXI-6652 User Manual

Timing and synchronization module for pxi
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NI PXI-6652
Timing and Multi-Chassis Synchronization Module
A l l t r a d e m a r k s , b r a n d n a m e s , a n d b r a n d s a p p e a r i n g h e r e i n a r e t h e p r o p e r t y o f t h e i r r e s p e c t i v e o w n e r s .
• C r i t i c a l a n d e x p e d i t e d s e r v i c e s
• I n s t o c k / R e a d y - t o - s h i p
Artisan Scientific Corporation dba Artisan Technology Group is not an affiliate, representative, or authorized distributor for any manufacturer listed herein.
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  • Page 1 NI PXI-6652 Timing and Multi-Chassis Synchronization Module In Stock Used and in Excellent Condition Buy Today! https://www.artisantg.com/60512-2 A l l t r a d e m a r k s , b r a n d n a m e s , a n d b r a n d s a p p e a r i n g h e r e i n a r e t h e p r o p e r t y o f t h e i r r e s p e c t i v e o w n e r s .
  • Page 2 NI PXI-665x User Manual Timing and Synchronization Module for PXI NI PXI-665x User Manual April 2004 Edition Part Number 370711A-01...
  • Page 3 Thailand 662 992 7519, United Kingdom 44 0 1635 523545 For further support information, refer to the Technical Support and Professional Services appendix. To comment on the documentation, send email to techpubs@ni.com. © 2004 National Instruments Corporation. All rights reserved.
  • Page 4 The reader should consult National Instruments if errors are suspected. In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it.
  • Page 5 These classes are known as Class A (for use in industrial-commercial locations only) or Class B (for use in residential or commercial locations). All National Instruments (NI) products are FCC Class A products. Depending on where it is operated, this Class A product could be subject to restrictions in the FCC rules. (In Canada, the Department of Communications (DOC), of Industry Canada, regulates wireless interference in much the same way.) Digital...

  • Page 6: Table Of Contents

    Installing the Software ....................2-1 Installing the Hardware....................2-1 Configuring the Module....................2-2 Chapter 3 Hardware Overview NI PXI-6653 Front Panel ....................3-4 NI PXI-6652 Front Panel ....................3-5 NI PXI-6651 Front Panel ....................3-6 Access LED .....................3-7 Active LED......................3-7 Connectors.......................3-8 Hardware Features ......................3-8 Clock Generation ......................3-10 Direct Digital Synthesis (DDS) ...............3-10...
  • Page 7 Contents Choosing the Type of Routing ................ 3-18 Asynchronous Routing ..............3-19 Synchronous Routing ............... 3-20 Generating a Single Pulse (Global Software Trigger) ........3-21 Using the PXI_CLK10 PLL ..................3-22 Chapter 4 Calibration Factory Calibration ......................4-1 OCXO Frequency ................... 4-1 TCXO Frequency ....................

  • Page 8: About This Manual

    About This Manual Thank you for purchasing the National Instruments NI PXI-665x Timing and Synchronization Module. The NI PXI-665x enables you to pass PXI timing and trigger signals between two or more PXI chassis. The NI PXI-665x can generate and route clock signals between devices in multiple chassis, providing a method to synchronize multiple devices in a multichassis PXI system.

  • Page 9: National Instruments Documentation

    This phrase refers to the NI PXI-6653 module for the PXI bus. NI PXI-6652 This phrase refers to the NI PXI-6652 module for the PXI bus. NI PXI-6651 This phrase refers to the NI PXI-6651 module for the PXI bus.

  • Page 10: Introduction

    If you are using the NI PXI-665x in a system to synchronize NI PXI-4472, NI PXI-5112, NI PXI-5411, NI PXI-6115, or E Series DAQ modules, you can refer to the NI-Sync User Manual, which you can find on the NI-Sync CD or download from ni.com/manuals © National Instruments Corporation NI PXI-665x User Manual...

  • Page 11: Unpacking

    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 user interface, code generation tools, and the LabWindows/CVI Data Acquisition and Easy I/O libraries.

  • Page 12: Safety Information

    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.
  • Page 13 Chapter 1 Introduction Operate the product at or below the installation category marked on the hardware label. Measurement circuits are subjected to working voltages and transient stresses (overvoltage) from the circuit to which they are connected during measurement or test. Installation categories establish standard impulse withstand voltage levels that commonly occur in electrical distribution systems.

  • Page 14: Installing And Configuring

    Visually verify the installation. Make sure the module is not touching other modules or components and is fully inserted into the slot. Plug in and power on the chassis. The NI PXI-665x is now installed. © National Instruments Corporation NI PXI-665x User Manual...

  • Page 15: Configuring The Module

    Chapter 2 Installing and Configuring Configuring the Module The NI PXI-665x is completely software configurable. The system software automatically allocates all module resources. The two LEDs on the front panel provide information about module status. The front panel description sections of Chapter 3, Hardware Overview, describe the LEDs in greater detail.

  • Page 16: Hardware Overview

    Hardware Overview This chapter presents an overview of the hardware functions of the NI PXI-6653, NI PXI-6652, and NI PXI-6651. Figure 3-1 provides a functional overview of the NI PXI-6653 and NI PXI-6652 hardware. Figure 3-2 provides a functional overview of the NI PXI-6651 hardware.
  • Page 17 PFI 2 Threshold PFI 3 Driver/ Comparator PFI 3 Threshold PFI 4 Driver/ Comparator PFI 4 Threshold PFI 5 Driver/ Comparator PFI 5 Threshold Figure 3-1. Functional Overview of the NI PXI-6653 and NI PXI-6652 NI PXI-665x User Manual ni.com...
  • Page 18 Clock Detector PXI_STAR <0..12> PFI 0 Driver/ Comparator CLOCK and PFI 0 TRIGGER Threshold Routing PXI_TRIG<0..7> PFI 1 Driver/ Comparator PFI 1 Threshold PCI Interface Figure 3-2. Functional Overview of the NI PXI-6651 © National Instruments Corporation NI PXI-665x User Manual...

  • Page 19: Ni Pxi-6653 Front Panel

    Chapter 3 Hardware Overview NI PXI-6653 Front Panel Figure 3-3 shows the connectors and LEDs on the front panel of the NI PXI-6653. NI PXI-6653 Timing Module ACCESS ACTIVE PFI 0 PFI 1 PFI 2 PFI 3 PFI 4 PFI 5 1 Access LED 4 CLKIN Connector 2 Active LED...

  • Page 20: Ni Pxi-6652 Front Panel

    PFI 1 PFI 2 PFI 3 PFI 4 PFI 5 1 Access LED 4 CLKIN Connector 2 Active LED 5 PFI <0..5> Connectors 3 CLKOUT Connector Figure 3-4. NI PXI-6652 Front Panel © National Instruments Corporation NI PXI-665x User Manual...

  • Page 21: Ni Pxi-6651 Front Panel

    Chapter 3 Hardware Overview NI PXI-6651 Front Panel Figure 3-5 shows the connectors and LEDs on the front panel of the NI PXI-6651. NI PXI-6651 Timing Module ACCESS ACTIVE PFI 0 PFI 1 1 Access LED 3 CLKIN Connector 2 Active LED 4 PFI <0..1>...

  • Page 22: Access Led

    PXI_CLK10 User Color Stopped PLL Error Setting Active — — Amber — Green Note A red Active LED can indicate that either PXI_CLK10 has stopped or that there is a PLL error. © National Instruments Corporation NI PXI-665x User Manual...

  • Page 23: Connectors

    NI PXI-665x can damage the module and the computer. NI is not liable for any damage resulting from such signal connections. Hardware Features The NI PXI-6653 and NI PXI-6652 perform two broad functions: • Generating clock and trigger signals •...
  • Page 24 DDS clock, or PXI_CLK10 may be routed to this location. DDS Clock (NI PXI-6653 This is the output of the NI PXI-6653 or NI PXI-6652 and NI PXI-6652 only) DDS. The DDS frequency can be programmed with fine granularity from 1 Hz to 105 MHz. The DDS chip automatically phase-locks to PXI_CLK10.

  • Page 25: Clock Generation

    PXI chassis. Clock Generation The NI PXI-6653 and NI PXI-6652 can generate two types of clock signals. The first clock is generated using the onboard DDS chip, and the second is generated with a precise 10 MHz oscillator. The following sections describe the two types of clock generation and explain the considerations for choosing either type.

  • Page 26: Pxi_Clk10 And Ocxo Or Tcxo

    It uses the temperature to adjust its frequency output according to the crystal’s known frequency variation across its operating temperature range. An NI PXI-6653 or NI PXI-6652 module in Slot 2 of a PXI chassis can replace the native PXI 10 MHz backplane frequency reference clock (PXI_CLK10) with the more stable and accurate output of the OCXO or TCXO.

  • Page 27: Routing Signals

    The NI PXI-665x also can route a 10 MHz clock from CLKIN to the PXI 10 MHz reference clock. The NI PXI-6653 and NI PXI-6652 can lock the OCXO or TCXO to an external reference clock and send that to the PXI 10 MHz reference clock.
  • Page 28 CLOCKS for PXI_STAR<0..12> and PXI_TRIG<0..7> ÷2 PXI_CLK10 ÷2 Figure 3-6. High-Level Schematic of NI PXI-6653 and NI PXI-6652 Signal Routing Architecture Figure 3-7 provides a more detailed view of the Selection Circuitry referenced in Figure 3-6. © National Instruments Corporation 3-13...

  • Page 29: Determining Sources And Destinations

    Chapter 3 Hardware Overview PFI<0..5> PXI_TRIG<0..7> PXI_STAR<0..12> Software Trigger CLK/N CLK/M Figure 3-7. Signal Selection Circuitry Diagram Determining Sources and Destinations All signal routing operations can be characterized by a source (input) and a destination. In addition, synchronous routing operations must also define a third signal known as the synchronization clock.

  • Page 30: Using Front Panel Pfis As Inputs

    Terminating the signals with a 50 Ω resistance is recommended when the source is Note another NI PXI-665x or any other source with a 50 Ω output. © National Instruments Corporation 3-15 NI PXI-665x User Manual...

  • Page 31: Using Front Panel Pfis As Outputs

    Chapter 3 Hardware Overview The voltage thresholds for the front-panel 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 individually programmable, which is useful if you are importing signals from multiple sources with different voltage swings.

  • Page 32: Using The Pxi/Rtsi Triggers

    • PXI_STAR <0..12> • Global software trigger • PXI_Trig/PXI_Star synchronization clock The PXI_Trig/PXI_Star synchronization clock may be any of the following signals: • DDS clock • PXI_CLK10 • PFI 0 Input © National Instruments Corporation 3-17 NI PXI-665x User Manual...

  • Page 33: Using The Pxi Star Triggers

    Chapter 3 Hardware Overview • Any of the previously listed signals divided by the first frequency divider (2 , up to 512) • Any of the previously listed signals divided by the second frequency divider (2 , up to 512) Refer to the Choosing the Type of Routing section for more information about the synchronization clock.

  • Page 34: Asynchronous Routing

    NI PXI-665x can be any of the following lines: • Any front panel PFI pin (PFI <0..5) • Any PXI star trigger line (PXI_STAR <0..12>) • Any PXI/RTSI trigger line (PXI_TRIG <0..7>) © National Instruments Corporation 3-19 NI PXI-665x User Manual...

  • Page 35: Synchronous Routing

    Chapter 3 Hardware Overview Synchronous Routing A synchronous routing operation is defined in terms of three signal locations: a source, a destination, and a synchronization clock. A digital signal comes in on the source and is propagated to the destination after the edge has been realigned with the synchronization clock.

  • Page 36: Generating A Single Pulse (Global Software Trigger)

    The synchronization clock for a synchronous route can be any of the following signals: • 10 MHz PXI backplane clock signal • DDS clock on the NI PXI-6653 or NI PXI-6652 • Front panel PFI 0 Input • One of two “divided copies” of any of the previously listed three signals.

  • Page 37: Using The Pxi_Clk10 Pll

    • The first option is to replace PXI_CLK10 directly with the OCXO output on the NI PXI-6653 or TCXO output on the NI PXI-6652. This oscillator is a more stable and accurate reference than the native backplane clock.
  • Page 38 The feedback in the PLL comes from PXI_CLK10. This PLL makes it possible for the NI PXI-6653 or NI PXI-6652 to align clock edges at CLKIN with the edges of PXI_CLK10 that the modules receive. If you split an external (accurate) 10 MHz reference and route it to two chassis, they can both lock to it.

  • Page 39: Calibration

    TCXO is adjusted using this constant to meet the specification listed in Appendix A, Specifications. This calibration applies only to the NI PXI-6652. PXI_CLK10 Phase When using the PLL to lock PXI_CLK10 to an external reference clock, the phase between the clocks can be adjusted.

  • Page 40: Dds Start Trigger Phase

    DDS. DDS Initial Phase The phase of the DDS output is adjusted using this constant so that the DDS outputs from multiple NI PXI-6653 or NI PXI-6652 modules are aligned. Additional Information...

  • Page 41: Appendix A Specifications

    Functional operation of the device outside the conditions indicated in the operational parts of the specification is not implied. This is a requirement of the PXI specification. © National Instruments Corporation NI PXI-665x User Manual...
  • Page 42 Appendix A Specifications Duty cycle distortion of CLKIN to PXI_CLK10_IN without PLL ..........±1%, max Required input duty cycle when using PLL........45 to 55% CLKOUT Characteristics Output frequency From PXI_CLK10 ......10 MHz From OCXO/TCXO ......10 MHz From DDS ........1 MHz to 105 MHz Duty cycle..........40 to 60% Output impedance........50 Ω, nominal Output coupling ........AC...

  • Page 43: Input Characteristics

    Stresses beyond those listed can cause permanent damage to the device. Exposure to absolute maximum rated conditions for extended periods of time can affect device reliability. Functional operation of the device outside the conditions indicated in the operational parts of the specifications is not implied. Relative to PXI_CLK10. © National Instruments Corporation NI PXI-665x User Manual...

  • Page 44: Output Characteristics

    Appendix A Specifications Output Characteristics Frequency range ........DC to 105 MHz Output impedance........50 Ω, nominal Output coupling ........DC Voltage level...........0 to 1.6 V into 50 Ω; 0 to 3.3 V into open circuit, typical Absolute maximum applied voltage ..±5.25 V, max Synchronized trigger clock to out time, t ........8.4 ns, typical...
  • Page 45 Initial accuracy ........±2.5 ppm Long-term stability ....... ±1 ppm Temperature stability (0 to 55 °C) ..±2 ppm Includes stability of OCXO and supporting circuitry. Includes temperature stability of OCXO/TCXO and supporting circuitry. © National Instruments Corporation NI PXI-665x User Manual...

  • Page 46: Power Requirements

    Appendix A Specifications DDS Characteristics Frequency range ........1 Hz to 105 MHz Frequency resolution ......<1.1 µHz Frequency accuracy ........Equivalent to PXI_CLK10 accuracy Physical Chassis requirement........One 3U CompactPCI or PXI slot (PXI Slot 2 for full functionality) Front panel connectors......SMB male, 50 Ω Front panel indicators ......Two tricolor LEDs (green, red, and amber) Recommended maximum cable length...

  • Page 47: Operating Environment

    Random Vibration Operating ........5 to 500 Hz, 0.3 g Nonoperating ........5 to 500 Hz, 2.4 g (Tested in accordance with IEC-60068-2-64. Nonoperating test profile exceeds the requirements of MIL-PRF-28800F, Class 3.) © National Instruments Corporation NI PXI-665x User Manual...

  • Page 48: Electromagnetic Compatibility

    Appendix A Specifications Safety The NI PXI-6653 meets the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use: • IEC 61010-1, EN 61010-1 • UL 3111-1 • CAN/CSA C22.2 No. 1010.1 For UL and other safety certifications, refer to the product label or to Note ni.com Electromagnetic Compatibility...

  • Page 49: Technical Support And Professional Services

    Technical Support and Professional Services Visit the following sections of the National Instruments Web site at for technical support and professional services: ni.com • Support—Online technical support resources at ni.com/support include the following: – Self-Help Resources—For immediate answers and solutions,...
  • Page 50 Appendix B Technical Support and Professional Services If you searched and could not find the answers you need, contact ni.com your local office or NI corporate headquarters. Phone numbers for our worldwide offices are listed at the front of this manual. You also can visit the Worldwide Offices section of to access the branch ni.com/niglobal...
  • Page 51 Ω accumulator a part where numbers are totaled or stored application development environment asynchronous a property of an event that occurs at an arbitrary time, without synchronization to a reference clock © National Instruments Corporation NI PXI-665x User Manual...
  • Page 52 Glossary backplane an assembly, typically a printed circuit board (PCB), with 96-pin connectors and signal paths that bus the connector pins. PXI systems have two connectors, called the J1 and J2 connectors. the group of conductors that interconnect individual circuitry in a computer. Typically, a bus is the expansion vehicle to which I/O or other devices are connected.
  • Page 53 © National Instruments Corporation NI PXI-665x User Manual...
  • Page 54 Measurement & a controlled centralized configuration environment that allows you to Automation Explorer configure all of your National Instruments DAQ, GPIB, IMAQ, IVI, (MAX) Motion, VISA, and VXI devices NI-DAQ National Instruments driver software for DAQ hardware...
  • Page 55 CompactPCI, with special mechanical, electrical, and software features. The PXIbus standard was originally developed by National Instruments in 1997, and is now managed by the PXIbus Systems Alliance. PXI star...
  • Page 56 Glossary sub miniature type B—a small coaxial signal connector that features a snap coupling for fast connection synchronous a property of an event that is synchronized to a reference clock clock to output time CtoQ hold time hold propagation delay time TRIG trigger signal trigger...
  • Page 57 Access LED color explanation (table), 3-7 NI PXI-6651 functional overview, 3-3 Active LED color explanation (table), 3-7 NI PXI-6652 functional overview, 3-2 configuring the device NI PXI-6653 functional overview, 3-2 Access LED, 3-7 routing architecture, 3-13 Active LED, 3-7...
  • Page 58 See also CLKIN connector; CLKOUT connector; PFI synchronization clock; PFI connector descriptions, 3-8 installation NI PXI-6651 diagram, 3-6 category, 1-4 NI PXI-6652 diagram, 3-5 hardware, 2-1 NI PXI-6653 diagram, 3-4 software, 2-1 instrument drivers (NI resources), B-1 generating a clock DDS, 3-10...
  • Page 59 PFIs as outputs, 3-16 services, B-1 PFI synchronization clock NI PXI-6651, parts locator diagram, 3-6 possible sources, 3-16 NI PXI-6652, parts locator diagram, 3-5 using front panel PFIs as outputs, 3-16 NI PXI-6653, parts locator diagram, 3-4 phase-locked loop. See PLL NI PXI-665x...
  • Page 60 Index PXI_CLK10 phase RTSI/PXI triggers, 3-17 calibration, 4-1 types PXI_CLK10_IN asynchronous, 3-19 routing from the CLKIN connector, 3-8 synchronous, 3-20 signal description (table), 3-9 RTSI signal names (note), 3-10 PXI_CLK10_OUT RTSI/PXI triggers signal description (table), 3-9 front panel triggers as outputs, 3-16 PXI_STAR <0..12>...
  • Page 61 3-20 unpacking the device, 1-2 TCXO voltage thresholds, programming, 3-16 clock generation, 3-11 clock, using the PXI_CLK10 PLL, 3-22 frequency calibration, 4-1 overview, 3-11 Web resources, B-1 specifications, A-5 technical support, B-1 © National Instruments Corporation NI PXI-665x User Manual...

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