National Instruments NI PXI-665 Series User Manual
  1. Manuals
  2. Brands
  3. National Instruments Manuals
  4. Control Unit
  5. NI PXI-665 Series
  6. User manual
National Instruments NI PXI-665 Series User Manual

National Instruments NI PXI-665 Series User Manual

Timing and synchronization module for pxi
Hide thumbs Also See for NI PXI-665 Series:
Table of Contents

Advertisement

Quick Links

Download this manual
PXI
NI PXI-665x User Manual
Timing and Synchronization Module for PXI
NI PXI-665x User Manual
February 2016
370711D-01

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the NI PXI-665 Series and is the answer not in the manual?

Questions and answers

Related Manuals for National Instruments NI PXI-665 Series

Summary of Contents for National Instruments NI PXI-665 Series

  • Page 1 NI PXI-665x User Manual Timing and Synchronization Module for PXI NI PXI-665x User Manual February 2016 370711D-01...
  • Page 2 11500 North Mopac Expressway Austin, Texas 78759-3504 USA Tel: 512 683 0100 NI Services For further support information, refer to the appendix. To comment on NI ni.com/info feedback documentation, refer to the NI website at and enter the Info Code © 2004–2016 National Instruments. All rights reserved.
  • Page 3 National Instruments Corporation. National Instruments respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other intellectual property laws. Where NI software may be used to reproduce software or other materials belonging to others, you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction.
  • Page 4 ™ The ExpressCard word mark and logos are owned by PCMCIA and any use of such marks by National Instruments is under license. The mark LabWindows is used under a license from Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation in the United States and other countries.
  • Page 5 Operation of this hardware in a residential area is likely to cause harmful interference. Users are required to correct the interference at their own expense or cease operation of the hardware. Changes or modifications not expressly approved by National Instruments could void the user’s right to operate the hardware under the local regulatory rules.

  • Page 6: Table Of Contents

    Contents About This Manual National Instruments Documentation ................ix Related Documentation ....................ix Chapter 1 Introduction What You Need to Get Started ..................1-1 Unpacking......................... 1-2 Software Programming Choices..................1-2 Safety Information......................1-2 Chapter 2 Installing and Configuring Installing the Software...................... 2-1 Installing the Hardware ....................
  • Page 7 Contents Chapter 4 Calibration Factory Calibration ......................4-1 OCXO Frequency ..................... 4-1 TCXO Frequency...................... 4-1 PXI_CLK10 Phase....................4-1 DDS Start Trigger Phase...................4-1 DDS Initial Phase...................... 4-2 Additional Information ..................... 4-2 Appendix A Specifications Appendix B NI Services Glossary Index viii | ni.com...

  • 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 route PXI timing and trigger signals between two or more devices within a single PXI chassis or between two or more 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: 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 | 1-1...

  • Page 10: Unpacking

    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.
  • Page 11 Working voltage is the highest rms value of an AC or DC voltage that can occur across any particular insulation. MAINS is defined as a hazardous live electrical supply system that powers hardware. Suitably rated measuring circuits may be connected to the MAINS for measuring purposes. © National Instruments | 1-3...
  • Page 12 Chapter 1 Introduction for U.S. or 230 AC voltage for Europe). Examples of Measurement Category II are measurements performed on household appliances, portable tools, and similar hardware. • Measurement Category III is for measurements performed in the building installation at the distribution level.

  • Page 13: 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 | 2-1...

  • Page 14: 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 Hardware Overview, describe the LEDs in greater detail. description sections of Chapter 3, 2-2 | ni.com...

  • Page 15: 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. © National Instruments | 3-1...
  • Page 16 Chapter 3 Hardware Overview Figure 3-1. Functional Overview of the NI PXI-6653 and NI PXI-6652 PXI_CLK10_IN AC Coupled CLKIN Clock Detector OCXO (6653) TCXO (6652) OCXO Calibration OCXO PXI_CLK10 Clock CLKOUT PXI_STAR CLKIN <0..12> DDS Clock PFI 0 Driver/ Comparator CLOCK and TRIGGER PFI 0...
  • Page 17 Figure 3-2. Functional Overview of the NI PXI-6651 PXI_CLK10_IN AC Coupled CLKIN 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 © National Instruments | 3-3...

  • Page 18: 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. Figure 3-3. NI PXI-6653 Front Panel NI PXI-6653 Timing Module ACCESS ACTIVE PFI 0 PFI 1 PFI 2 PFI 3 PFI 4 PFI 5...

  • Page 19: Ni Pxi-6652 Front Panel

    Figure 3-4. NI PXI-6652 Front Panel NI PXI-6652 Timing Module ACCESS ACTIVE PFI 0 PFI 1 PFI 2 PFI 3 PFI 4 PFI 5 Access LED CLKIN Connector Active LED PFI <0..5> Connectors CLKOUT Connector © National Instruments | 3-5...

  • Page 20: 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. Figure 3-5. NI PXI-6651 Front Panel NI PXI-6651 Timing Module ACCESS ACTIVE PFI 0 PFI 1 Access LED CLKIN Connector Active LED PFI <0..1>...

  • Page 21: Access Led

    Table 3-2. Active LED Color Quick Reference Table PXI_CLK10 Color Stopped PLL Error User Setting PLL Active — — Amber — Green A red Active LED can indicate that either PXI_CLK10 has stopped or that Note there is a PLL error. © National Instruments | 3-7...

  • Page 22: Connectors

    Chapter 3 Hardware Overview Connectors This section describes the connectors on the front panel of the NI PXI-665x. • CLKIN— Clock Input. This connector supplies the module with a clock that can be programmatically routed to: – The onboard PLL for use as a reference for the oscillator to route to PXI_CLK10_IN for distribution to other modules in the chassis.

  • Page 23: Hardware Features

    This is the output of the NI PXI-6653 or (NI PXI-6653 and NI PXI-6652 DDS. The DDS frequency can be NI PXI-6652 only) programmed with fine granularity from 1 Hz to 105 MHz. The DDS chip automatically phase-locks to PXI_CLK10. © National Instruments | 3-9...

  • Page 24: Clock Generation

    Chapter 3 Hardware Overview Table 3-3. Signal Descriptions (Continued) Signal Name Direction Description PXI_STAR <0..12> In/Out The PXI star trigger bus connects Slot 2 to Slot <3..15> in a star configuration. The electrical paths of each star line are closely matched to minimize intermodule skew.

  • Page 25: Pxi_Clk10 And Ocxo Or Tcxo

    OCXO. The TCXO contains circuitry to measure the temperature of the oscillator. It uses the temperature to adjust its frequency output according to the crystal’s known frequency variation across its operating temperature range. © National Instruments | 3-11...

  • Page 26: Routing Signals

    Chapter 3 Hardware Overview 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. All other PXI modules in the chassis that reference the 10 MHz backplane clock benefit from this more accurate frequency reference.
  • Page 27 PXI_TRIG<0..7> ÷2 PXI_CLK10 ÷2 Figure 3-7 provides a more detailed view of the Selection Circuitry referenced in Figure 3-6. Figure 3-7. Signal Selection Circuitry Diagram PFI<0..5> CLKIN PXI_TRIG<0..7> (PXI_STAR only) PXI_STAR<0..12> Software Trigger CLK/2 CLK/2 © National Instruments | 3-13...

  • Page 28: Determining Sources And Destinations

    Chapter 3 Hardware Overview 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. Refer to the Choosing the Type of Routing section for more information on synchronous versus asynchronous routing.

  • Page 29: Using Front Panel Pfis As Inputs

    , up to 512) • Any of the previously listed signals divided by the second frequency divider (2 , up to 512) Choosing the Type of Routing Refer to the section for more information on the synchronization clock. © National Instruments | 3-15...

  • Page 30: Brief Overview Of Pxi Synchronization Features

    Chapter 3 Hardware Overview The PFI synchronization clock is the same for all routing operations in which Note PFI <0..5> is defined as the output, although the divide-down ratio for this clock (full rate, first divider, second divider) may be chosen on a per route basis. Brief Overview of PXI Synchronization Features PCI eXtensions for Instrumentation (PXI) is a rugged PC-based platform that offers a high-performance, low-cost deployment solution for measurement and automation systems.

  • Page 31: Using The Pxi/Rtsi Triggers

    The multi-drop nature of the PXI trigger bus can introduce signal integrity issues. Therefore, National Instruments does not recommend the use of PXI_Trigger lines for clock distribution. The preferred method for clock distribution is the use of the PXI_STAR triggers. However, the NI PXI-665x Series does support routing of clocks to the PXI_Trigger lines, in case you must use them.

  • Page 32: Using The Pxi Star Triggers

    Chapter 3 Hardware Overview Using the PXI Star Triggers There are up to 13 PXI star triggers per chassis. Each trigger line is a dedicated connection between the System Timing Slot (Slot 2) and one other slot. The PXI Specification, Revision 2.1, requires that the propagation delay along each star trigger line be matched to within 1 ns.

  • Page 33: Synchronous Routing

    The NI PXI-665x boards support routing synchronous to either the rising or falling edge of the synchronization clock. In addition, the polarity of the destination signal can be inverted, which is useful when handling active-low digital signals. © National Instruments | 3-19...
  • Page 34 Chapter 3 Hardware Overview Figure 3-10. Synchronous Routing Operation Setup Hold Time Time setup hold Trigger Input Synchronization Clock Clock to Output Time, t CtoQ Trigger Output Synchronous routing can be useful for eliminating skew when sending triggers to several destinations.
  • Page 35 One of two “divided copies” of any of the previously listed three signals. The NI PXI-665x includes two clock-divider circuits that can divide the synchronization clock signals by any power of 2 up to 512. © National Instruments | 3-21...

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

    Chapter 3 Hardware Overview Refer to Figures 3-6 and 3-7 for an illustration of how the NI PXI-665x performs synchronous routing operations. Generating a Single Pulse (Global Software Trigger) The global software trigger is a single pulse with programmable delay that is fired on a software command.
  • Page 37 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. The result is a tighter synchronization of PXI_CLK10 on the chassis. © National Instruments | 3-23...

  • Page 38: Factory Calibration

    To start the DDS reliably, the DDS start trigger must arrive within a certain window of time. The phase of the DDS start trigger is controlled by this constant to meet the setup and hold-time requirements of the DDS. © National Instruments | 4-1...

  • Page 39: Dds Initial Phase

    Chapter 4 Calibration 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 ni.com/calibration Refer to for additional information on NI calibration services. 4-2 | ni.com...
  • Page 40 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 | A-1...

  • Page 41: Appendix A Specifications

    Appendix A Specifications 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 Amplitude, software configurable to two voltage levels (low and high drive) Open Load Square Wave Low Drive...
  • Page 42 This specification applies to all synchronous routes to the PXI_Star lines, as well as asynchronous routes from the PFI inputs to the PXI_Star lines. © National Instruments | A-3...
  • Page 43 Appendix A Specifications PXI Trigger Characteristics PXI_TRIG <0..7> to PXI_TRIG <0..7> output skew at NI PXI-665x backplane connector....5 ns, typical Asynchronous delay, t PXI_TRIG <0..7> to PFI <0..5> output..11 to 17 ns, typical OCXO Characteristics Nominal frequency ...........10 MHz Accuracy within 1 year of calibration adjustment within 0 °C to 55 °C operating temperature range ......±80 ppb...
  • Page 44 (Tested in accordance with IEC 60068-2-56.) Maximum altitude..........2,000 m (at 25 °C ambient temperature) Pollution Degree ..........2 Indoor use only Maximum cable length with a direct cable connection. Loss from a signal splitter would reduce maximum cable length. © National Instruments | A-5...
  • Page 45 Appendix A Specifications Storage Environment Ambient temperature range ......-20 to 70 °C (Tested in accordance with IEC 60068-2-1 and IEC 60068-2-2.) Relative humidity range........5% to 95% noncondensing (Tested in accordance with IEC 60068-2-56.) Shock and Vibration Operational Shock..........30 g peak, half-sine, 11 ms pulse (Tested in accordance with IEC 60068-2-27.
  • Page 46 For additional environmental information, refer to the Minimize Our Environmental Impact web ni.com/environment page at . This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document. © National Instruments | A-7...
  • Page 47 At the end of the product life cycle, all products must be sent to EU Customers a WEEE recycling center. For more information about WEEE recycling centers, National Instruments WEEE initiatives, and compliance with WEEE Directive ni.com/environment/ 2002/96/EC on Waste and Electronic Equipment, visit...
  • Page 48 • System Integration—If you have time constraints, limited in-house technical resources, or other project challenges, National Instruments Alliance Partner members can help. To learn ni.com/alliance more, call your local NI office or visit © National Instruments | B-1...
  • Page 49 Appendix B NI Services • Training and Certification—The NI training and certification program is the most effective way to increase application development proficiency and productivity. Visit ni.com/training for more information. – The Skills Guide assists you in identifying the proficiency requirements of your current application and gives you options for obtaining those skills consistent with ni.com/ your time and budget constraints and personal learning preferences.
  • Page 50 ° degree 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 | G-1...
  • Page 51 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.
  • Page 52 LabVIEW a graphical programming language light-emitting diode—a semiconductor light source © National Instruments | G-3...
  • Page 53 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 54 PXI system which can house a master timing unit 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 © National Instruments | G-5...
  • Page 55 Glossary clock to output time CtoQ hold time hold propagation delay time TRIG trigger signal trigger a digital signal that starts or times a hardware event (for example, starting a data acquisition operation) setup time setup volts virtual instrument G-6 | ni.com...
  • Page 56 CLKOUT connector specifications, A-7 description, 3-8 environmental specifications, A-5 location (diagram), 3-4, 3-5, 3-6 equipment, getting started, 1-1 signal description (table), 3-9 specifications, A-2 clock generation DDS, 3-10 overview, 3-10 PXI_CLK10 and OCXO, 3-11 © National Instruments | I-1...
  • Page 57 Index factory calibration, 4-1 frequency tuning word, 3-10 Access LED, 3-7 front panel Active LED, 3-7 See also CLKIN connector; CLKOUT light-emitting diode. See LED connector; PFI synchronization clock; connector descriptions, 3-8 maximum signal rating (caution), 3-8 NI PXI-6651 diagram, 3-6 NI PXI-6651, parts locator diagram, 3-6 generating a clock NI PXI-665x...
  • Page 58 PXI star triggers, 3-18 DDS characteristics, A-4 using the PXI/RTSI triggers, 3-17 electromagnetic compatibility, A-7 PXI_Trig/PXI_Star synchronization clock environmental, A-5 possible sources, 3-17 environmental management, A-7 using the PXI/RTSI triggers, 3-17 OCXO characteristics, A-4 © National Instruments | I-3...
  • Page 59 Index online product certification, A-7 PFI <0..5> unpacking the device, 1-2 input characteristics, A-2 output characteristics, A-3 physical, A-5 voltage thresholds, programming, 3-15 power requirements, A-5 PXI trigger characteristics, A-4 PXI_STAR trigger characteristics, A-3 safety, A-6 TCXO characteristics, A-4 star triggers. See PXI_STAR <0..12>, 3-10 synchronous routing overview, 3-19 possible sources and destinations, 3-21...

This manual is also suitable for:

Ni pxi-6653Ni pxi-6652Ni pxi-6651Pxi-665 seriesPxi-6651

Table of Contents