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Содержание NI PXI-6682H

Страница 1: ...erutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In st...

Страница 2: ...I PXI 6682 User Manual Timing and Synchronization Module for PXI NI PXI 6682 User Manual October 2007 372292A 01 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg...

Страница 3: ...710 Mexico 01 800 010 0793 Netherlands 31 0 348 433 466 New Zealand 0800 553 322 Norway 47 0 66 90 76 60 Poland 48 22 3390150 Portugal 351 210 311 210 Russia 7 495 783 6851 Singapore 1800 226 5886 Slo...

Страница 4: ...rmation retrieval system or translating in whole or in part without the prior written consent of National Instruments Corporation National Instruments respects the intellectual property of others and...

Страница 5: ...ns not expressly approved by NI could void the user s authority to operate the equipment under the FCC Rules Class A Federal Communications Commission This equipment has been tested and found to compl...

Страница 6: ...ing the Module 2 2 Chapter 3 Hardware Overview NI PXI 6682 Front Panel 3 3 GPS LED 3 3 1588 LED 3 4 Speed LED 3 4 ACT LINK LED 3 5 Connectors 3 5 Hardware Features 3 6 Clock and Event Generation 3 8 P...

Страница 7: ...ces 4 3 Operating Environment 4 4 Timing System Performance 4 4 IEEE 1588 Synchronization Best Practices 4 4 Network Topology 4 4 GPS Synchronization Best Practices 4 5 Appendix A Specifications Safet...

Страница 8: ...caution which advises you of precautions to take to avoid injury data loss or a system crash When this symbol is marked on the product refer to the Safety Information section of Chapter 1 Introductio...

Страница 9: ...iguration instructions specifications about the measurement hardware and application hints Software documentation Refer to the NI Sync User Manual available at ni com manuals You can download NI docum...

Страница 10: ...n a PXI system What You Need to Get Started To set up and use the NI PXI 6682 you need the following items NI PXI 6682 Timing and Triggering Module NI PXI 6682 User Manual NI VISA NI Sync CD One of th...

Страница 11: ...amaged module into the computer Store the NI PXI 6682 in the antistatic envelope when not in use Software Programming Choices The NI PXI 6682 uses NI Sync software as its driver When programming the N...

Страница 12: ...dry and free from contaminants before you return it to service Operate the product only at or below Pollution Degree 2 Pollution is foreign matter in a solid liquid or gaseous state that can reduce d...

Страница 13: ...r example 115 V for U S or 230 V for Europe Examples of Installation Category II are measurements performed on household appliances portable tools and similar products Installation Category III is for...

Страница 14: ...ssis 2 Choose an available PXI slot in the PXI chassis Note The NI PXI 6682 is usually installed in Slot 2 3 Remove the filler panel for the PXI slot you chose in step 2 4 Ground yourself using a grou...

Страница 15: ...urable 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 Hardwa...

Страница 16: ...al 3 Hardware Overview This chapter presents an overview of the hardware functions of the NI PXI 6682 shown in Figure 3 1 Figure 3 1 Isometric View of the NI PXI 6682 Artisan Technology Group Quality...

Страница 17: ...onization Clock Generation and Routing Circuitry PCI Interface PXI PCI PXI_STAR 0 12 PXI_TRIG 0 7 PXI_CLK10_IN CLKIN AC Coupled Clock Detector PXI_CLK10 PFI 0 IRIG B Receiver PFI 1 PFI 2 TCXO CLKOUT A...

Страница 18: ...ure 3 3 for the GPS LED location Table 3 1 summarizes what the GPS LED colors represent 1 GPS LED 2 1588 LED 3 GPS Antenna Connector 4 CLKOUT Connector 5 CLKIN Connector 6 PFI0 IRIG B Input Connector...

Страница 19: ...self survey Blinking Amber Self survey in progress Blinking Green Self survey complete normal operation Red Error The GPS LED is turned off if GPS is not set as the time reference An error is generate...

Страница 20: ...active antenna This connector also serves as the input for the RF signal coming in from the GPS antenna CLKOUT Clock Output This connector is used to source a 10 MHz clock that can be routed programm...

Страница 21: ...g Refer to Figure 3 3 for the location of these connections on the NI PXI 6682 front panel Caution Connections that exceed any of the maximum ratings of input or output signals on the NI PXI 6682 can...

Страница 22: ...LKOUT Out CLKOUT is the signal on the SMB output pin of the same name Either the TCXO clock or PXI_CLK10 may be routed to this location PXI_STAR 0 12 In Out The PXI star trigger bus connects Slot 2 to...

Страница 23: ...ors is temperature variation 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...

Страница 24: ...e trigger routing capabilities It can route signals to and from the front panel the PXI star triggers and the PXI triggers In addition the polarity of the destination signal can be inverted which is u...

Страница 25: ...on synchronous versus asynchronous routing Table 3 6 summarizes the sources and destinations of the NI PXI 6682 The destinations are listed in the horizontal heading row and the sources are listed in...

Страница 26: ...sent and received at the same time Table 3 6 Sources and Destinations for NI PXI 6682 Signal Routing Operations Sources Destinations Front Panel Backplane Front Panel CLKOUT PFI 0 2 PXI_ CLK10_IN PXI_...

Страница 27: ...ne of the following sources Another PFI 0 2 PXI_TRIG 0 7 PXI_STAR 0 12 Future time events PXI_CLK10 Ground The PFI trigger outputs may be synchronized to CLK10 except when routing future time events R...

Страница 28: ...disregard timestamps for at least 5 ms When setting up PFI0 as an output future time events or clocks ensure that PFI0 is driven low for at least 5 ms after the line is set up Alternately ensure that...

Страница 29: ...triggers per chassis Each trigger line is a dedicated connection between Slot 2 and one other slot The PXI Specification Revision 2 1 requires that the propagation delay along each star trigger line...

Страница 30: ...source signal goes from low to high this rising edge is transferred to the destination after a propagation delay through the module Figure 3 5 illustrates an asynchronous routing operation Figure 3 5...

Страница 31: ...ation does not directly follow the input after a propagation delay Instead the output waits for the next rising edge of the clock before it follows the input Thus the output is said to be synchronous...

Страница 32: ...XI_STAR 0 12 Any PXI Trigger line PXI_TRIG 0 7 In the NI PXI 6682 the synchronization clock for synchronous routes is always PXI_CLK10 Note The possible destinations for a synchronous route are identi...

Страница 33: ...tem a precise timing and synchronization source The NI PXI 6682 has a GPS receiver which powers an active GPS antenna and receives and processes the RF signals 1 575 GHz from the satellites The GPS re...

Страница 34: ...ons This could cause damage to the digital circuitry the device driving the AM signal or both Always ensure the line is configured for IRIG B AM operation before connecting an IRIG B AM signal Further...

Страница 35: ...nfigured as the PPS input terminal When synchronizing based on a PPS the first pulse received will set the NI PXI 6682 internal timebase to either an arbitrary time supplied by the user or the host co...

Страница 36: ...ance by connecting two or more pulse per second signals to an oscilloscope and measuring the latency between them Adjustments can be made to account for deterministic latency Refer to the NI Sync API...

Страница 37: ...dows configuration panels GPS Synchronization Best Practices The embedded GPS receiver in the NI PXI 6682 requires signals from several satellites to be able to compute precise timing and location The...

Страница 38: ...ge 400 mVp p to 5 Vp p Absolute maximum input voltage1 6 Vp p max CLKIN to PXI_CLK10_IN delay 13 ns typical 1 0 ns max Load Square Wave Open Load 5 Vp p typical 50 Load 2 5 Vp p typical 1 Stresses bey...

Страница 39: ...0 7 V max 0 V typical for 1 M load Absolute maximum applied voltage2 0 to 5 V Output to output skew asynchronous 1 5 ns typical Output to output skew synchronous 2 ns typical Synchronized trigger clo...

Страница 40: ...al Synchronized trigger input setup time tsetup 1 12 ns Synchronized trigger input hold time thold 1 0 ns IRIG B Input Characteristics PFI0 IRIG B AM compatibility IRIG B 12X Maximum Input voltage ran...

Страница 41: ...at 0 increment to 23 and then roll over to 0 Days begin every year at 1 Days increment to 365 in non leap years or to 366 in leap years and then roll over to 1 Leap years must be supported Valid value...

Страница 42: ...zed clock frequency range DC to 1 5 MHz Duty cycle Programmable Note Clock signals generated on PFI PXI_STAR or PXI Trigger lines must have a period and duty cycle that is a multiple of 10 ns Minimum...

Страница 43: ...14 8 dB If your GPS antenna installation requires a longer cable ensure that the loss per unit of distance is lower such that the total signal loss is under 17 dB Physical Chassis requirement One 3U...

Страница 44: ...15 minutes before testing began All test durations were 12 hours 2 For the GPS test two PXI 6682 boards were independently synchronizing to GPS and configured to generate a PPS The specification abov...

Страница 45: ...0 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 pe...

Страница 46: ...15 Emissions Class A Note For EMC compliance operate this device according to product documentation CE Compliance This product meets the essential requirements of applicable European Directives as ame...

Страница 47: ...nt Waste Electrical and Electronic Equipment WEEE EU Customers At the end of their life cycle all products must be sent to a WEEE recycling center For more information about WEEE recycling centers and...

Страница 48: ...f those is subdivided further depending on the electrical characteristics of the signal used to transmit the data and the actual data Table B 1 IRIG Standard Definitions IRIG Standard Bit rate bit dur...

Страница 49: ...f the bit duration and at space for the remaining 50 to transmit a position identifier the source must keep the signal at mark for 80 of the bit duration and at space for the remaining 20 Binary bits...

Страница 50: ...n the generated sine wave such that the leading edges of bits are coincident with zero crossings of the sine wave Figure B 1 shows an example of transmission of a binary one a binary zero and two posi...

Страница 51: ...ition identifier P3 30 33 Units of days 35 38 Tens of days 39 Position identifier P4 40 41 Hundreds of days 49 Position identifier P5 50 53 Units of year or control function bits 55 58 Tens of year or...

Страница 52: ...every hour at 0 increment to 59 and then roll over to 0 Hours begin every day at 0 increment to 23 and then roll over to 0 Days begin every year at 1 Days increment to 365 in non leap years or to 366...

Страница 53: ...question receives an answer For information about other technical support options in your area visit ni com services or contact your local office at ni com contact Training and Certification Visit ni...

Страница 54: ...not find the answers you need contact 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 Of...

Страница 55: ...06 Symbols percent plus or minus positive of or plus negative of or minus per degree ohm A AC alternating current ADE application development environment asynchronous a property of an event that occur...

Страница 56: ...LKOUT is the signal on the SMB output pin of the same name PXI_CLK10 can be routed to CLKOUT clock hardware component that controls timing for reading from or writing to groups CompactPCI a Eurocard c...

Страница 57: ...n and timing information H Hz hertz the number of scans read or updates written per second I IEEE Institute of Electrical and Electronics Engineers IEEE 1588 an IEEE standard used to synchronize separ...

Страница 58: ...P PCI Peripheral Component Interconnect a high performance expansion bus architecture originally developed by Intel to replace ISA and EISA It is achieving widespread acceptance as a standard for PCs...

Страница 59: ...duced by different characteristics of multiple channels Skew can occur between channels on one module or between channels on separate modules intermodule skew slave a computer or peripheral device con...

Страница 60: ...Glossary NI PXI 6682 User Manual G 6 ni com tsetup setup time V V volts VI virtual instrument Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 61: ...neration PXI_CLK10 and TCXO 3 8 color Link LED color explanation table 3 4 3 5 Speed LED color explanation table 3 5 configuring the device overview 2 2 Speed LED 3 4 conventions used in the manual vi...

Страница 62: ...rview 3 5 block diagram 3 2 configuring 2 2 connector descriptions 3 5 GPS LED overview 3 3 installing 2 1 overview 3 6 Speed LED overview 3 4 synchronization 4 1 best practices 4 3 GPS 4 1 IEEE1855 4...

Страница 63: ...ector 3 5 signal description table 3 7 PXI_CLK10_OUT signal description table 3 7 routing to the CLKOUT connector 3 5 PXI_STAR 0 12 asynchronous routing 3 16 signal description table 3 7 specification...

Страница 64: ...4 3 GPS 4 1 IEEE 1588 4 3 IRIG B 4 1 synchronization accuracy A 7 synchronization best practices GPS 4 5 IEEE 1588 4 4 network topology 4 4 synchronization clock See also PXI_Trig PXI_Star synchroniz...

Страница 65: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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