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National Instruments 6608 User Manual
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National Instruments 6608 User Manual

National Instruments 6608 User Manual

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NI PXI-6608
High-Precision Counter / Timer with Digital I/O
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.
In Stock
Used and in Excellent Condition
Open Web Page
https://www.artisantg.com/80570-1
• We b u y y o u r e x c e s s , u n d e r u t i l i z e d , a n d i d l e e q u i p me n t
• F u l l - s e r v i c e , i n d e p e n d e n t r e p a i r c e n t e r

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  • Page 1 NI PXI-6608 High-Precision Counter / Timer with Digital I/O In Stock Used and in Excellent Condition Open Web Page https://www.artisantg.com/80570-1 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 660x User Manual NI 6601, NI 6602, and NI 6608 Devices NI 660x User Manual Français Deutsch ni.com/manuals December 2012 372119C-01 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 3 11500 North Mopac Expressway Austin, Texas 78759-3504 USA Tel: 512 683 0100 For further support information, refer to the Technical Support and Professional Services appendix. To comment on National Instruments documentation, refer to the National Instruments Web site at and enter ni.com/info the Info Code feedback ©...
  • Page 4 Warranty The NI 6601, NI 6602, and NI 6608 devices are warranted against defects in materials and workmanship for a period of one year from the date of shipment as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defective during the warranty period.
  • Page 5 RESPONSIBLE FOR VERIFYING AND VALIDATING THE SUITABILITY OF NATIONAL INSTRUMENTS PRODUCTS WHENEVER NATIONAL INSTRUMENTS PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION, INCLUDING, WITHOUT LIMITATION, THE APPROPRIATE DESIGN, PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 6 Furthermore, any modifications to the product not expressly approved by National Instruments could void your authority to operate it under your local regulatory rules.
  • Page 7 When to Use Duplicate Count Prevention............2-7 When Not to Use Duplicate Count Prevention..........2-7 Transfer Rates ........................2-8 High Precision Clock (NI 6608) ..................2-9 Using the OCXO as the SOURCE Counter ............2-9 Using the OCXO as the 10 MHz PXI Backplane Clock .........2-9 Measuring OCXO Stable Frequency Deviation ..........2-11...
  • Page 8 Contents Counters......................... 3-9 Counter n Source Signal ................. 3-9 Counter Source to Counter Out Delay..........3-11 Counter n Gate Signal ..................3-11 Counter n Auxiliary Signal ................3-12 Counter n Internal Output Signal ..............3-13 Hardware Arm Start Triggers ................. 3-13 Counter Pairs....................
  • Page 9 About This Manual This manual describes the electrical and mechanical aspects of the National Instruments NI 6601, NI 6602, and NI 6608 devices, and contains information about device operation and programming. Unless otherwise noted, text applies to all NI 660x devices. The PCI and PXI implementations are the same in functionality;...
  • Page 10 About This Manual • DAQ Assistant Help—Contains information about creating and configuring channels, tasks, and scales using the DAQ Assistant. For more information, in Measurement& Automation Explorer (MAX), select Help»Help Topics»NI-DAQmx»DAQ Assistant. • PXI Hardware Specifications Revision 2.1—Introduces the PXI architecture and describes the electrical, mechanical, and software requirements for PXI.
  • Page 11 TTL/CMOS-compatible digital I/O. The NI 6602 offers this capability and four additional 32-bit counter channels. The NI 6608 is a functional superset of the NI 6602 device with a high-stability clock called an oven-controlled crystal oscillator (OCXO). The counter/timer channels have many measurement and generation...
  • Page 12 Chapter 1 Introduction sub-buses and PXI. The standard implementation for CompactPCI does not include these sub-buses. The PXI TIO Series device works in any CompactPCI chassis adhering to the PICMG 2.0 R3.0 core specification. PXI-specific features are implemented on the J2 connector of the bus. The PXI device is compatible with any chassis with a sub-bus that does not drive the lines used by that device.
  • Page 13 Front-mount terminal block for NI PXI 660x TBX-68 DIN-rail connector block CB-68LP Low-cost screw connector block CB-68LPR Low-cost screw connector block © National Instruments NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 14 The CtrnSource signal on the general purpose counter will be the divided signal from the simple counter. © National Instruments NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 15 Chapter 2 Device Overview Figure 2-1 shows an example of prescaling. External Signal Prescaler Rollover (Used as Source by Counter) Counter Value Figure 2-1. Prescaling Example Prescaling is intended for use with two counter period and frequency measurements where the measurement is made on a continuous, repetitive signal.
  • Page 16 Sampled GATE at Ctr1 Figure 2-2. Counter 0 at Gate Edge on PFI 38 One Source Period before Counter 1 © National Instruments NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 17 Chapter 2 Device Overview Counter Source PFI 38 at Input To ASIC PFI 38 Synchronized at Pad 1/2 Cycles PFI 38 at CTR 0 GATE PFI 38 at CTR 1 GATE 1/4 Cycle Sampled GATE at Ctr0 Sampled GATE at Ctr1 Figure 2-3.
  • Page 18 Source pulse. In this example, the counter stores the values in the buffer on the first rising Source edge after the rising edge of Gate. © National Instruments NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 19 Chapter 2 Device Overview Example Application That Works Incorrectly (Duplicate Counting) In Figure 2-5, after the first rising edge of Gate, no Source pulses occur. So the counter does not write the correct data to the buffer. No Source edge, so no value written to buffer.
  • Page 20 Use duplicate counter prevention only for buffered measurements with an external CtrnSource signal. Do not use it when the CtrnSource signal is greater than one-fourth of the maximum timebase. © National Instruments NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 21 Chapter 2 Device Overview Transfer Rates The maximum sustainable transfer rate a TIO device can achieve for a buffered acquisition depends on the following factors: • Amount of available bus bandwidth • Processor speed and operating system • Application software To reduce the amount of bus activity, limit the number of devices generating bus cycles.
  • Page 22 To use the OCXO 10 MHz clock as the PXI backplane clock, plug the NI PXI-6608 device into Slot 2, or the slot immediately to the right of the controller of the PXI chassis. By default, NI-DAQ software drives the 10 MHz clock from the OCXO onto the PXI CLK10 in pin so that the OCXO is used as the PXI backplane clock.
  • Page 23 The PXI CLK10 in pin is used as the PXI Star pin in other slots. The PXI Star pin is not used for the PXI backplane clock. PXI Backplane NI PXI-6608 in Slot 2 10 MHz of PXI Chassis TIO(0)
  • Page 24 Device Overview Measuring OCXO Stable Frequency Deviation When you power the NI 6608 device, the OCXO requires adequate warm-up time to reach stable frequency. Five minutes is adequate warm-up time for a power-off duration of less than one hour, with maximum deviation within 20 ppb, or parts per billion, while four hours of operation is adequate for a power-off duration of up to 90 days.
  • Page 25 When you are ready to calibrate your device to correct for drift in frequency, refer to the NI 6601/6602 Calibration Procedure or the NI 6608 Timing I/O Device Calibration Procedure. You can calibrate these devices in Traditional NI-DAQ (Legacy) only.
  • Page 26 However, a change in the signal is propagated only if the signal maintains its new state for at least two © National Instruments NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 27 Chapter 3 Signal Connections consecutive rising edges of the filter clock. The frequency of the filter clock timebase determines whether a transition in the signal may propagate or not. The function of the internal sampling clock is to increase the sampling rate and prevent aliasing.
  • Page 28 I/O Connector Pinout Figure 3-2 shows the pinout of the NI 6601. Figure 3-3 shows the pinout of the NI 6602/6608. The descriptions beside each pin are in the following format: Signal Name / DIO Context / Counter Context (Default).
  • Page 29 Chapter 3 Signal Connections Note The NI 6601 uses counters <0..3> only. PFI 31/P0.31/CTR 2 SOURCE D GND D GND PFI 30/P0.30/CTR 2 GATE PFI 28/P0.28/CTR 2 OUT PFI 29/P0.29/CTR 2 AUX PFI 27/P0.27/CTR 3 SOURCE D GND D GND PFI 26/P0.26/CTR 3 GATE PFI 24/P0.24/CTR 3 OUT PFI 25/P0.25/CTR 3 AUX...
  • Page 30 R GND R GND: Reserved if using an SH68-68-D1 shielded cable. Ground if using an R6868 ribbon cable. Figure 3-3. NI 6602/6608 Pinout © National Instruments NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 31 Chapter 3 Signal Connections Motion Encoder Context Pin Assignments Table 3-2 lists the motion encoder context pin assignments for the I/O connector on NI 660x devices. Table 3-2. NI 660x Motion Encoder Context Pin Assignments Pin Number Motion Encoder Context channel A(0) index/z(0) channel B(1)
  • Page 32 P0.11 or CTR 7 SOURCE PFI 12 P0.12 or CTR 6 OUT PFI 13 P0.13 PFI 14 P0.14 or CTR 6 GATE © National Instruments NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 33 Chapter 3 Signal Connections Table 3-3. PFI Lines Used as Outputs (Continued) PFI Line Possible Signals PFI 15 P0.15 or CTR 6 SOURCE PFI 16 P0.16 or CTR 5 OUT PFI 17 P0.17 PFI 18 P0.18 or CTR 5 GATE PFI 19 P0.19 or CTR 5 SOURCE PFI 20...
  • Page 34 The counters on TIO devices have two internal timebases: 100 kHz and 20 MHz. The counters on the NI 6602 and NI 6608 also have an 80 MHz timebase. Each counter has a gate, auxiliary, and source input. Each of these inputs can be an internal or external signal that connects to the I/O connector.
  • Page 35 Chapter 3 Signal Connections Figure 3-4 shows the timing requirements for the CtrnSource signal. Tsrcper Tsrcpw CtrnSource Tgatepw Figure 3-4. Timing Requirements for CtrnSource Signal Figure 3-4 shows the minimum pulse width and period that you must use for the CtrnSource signal. This signal must satisfy both minimum criteria. If the high phase of the CtrnSource signal is Tsrcpw ns, the low phase must be Tsrcper - Tsrcpw.
  • Page 36 The gate signal can perform many different operations including starting and stopping the counter, generating interrupts, and saving the counter contents. © National Instruments 3-11 NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 37 Chapter 3 Signal Connections You can export the CtrnGate signal to the I/O connector’s default PFI input for each CtrnGate. For example, you can export the gate signal connected to counter 0 to the PFI 38/CTR 0 GATE pin, even if another PFI is inputting the Ctr0Gate signal.
  • Page 38 By using the Arm Start Trigger, you can start more than one counter simultaneously by configuring each counter to use the same Arm Start Trigger signal. © National Instruments 3-13 NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 39 NI-DAQmx Help, and/or use the examples that are available with NI-DAQmx. Real-Time System Integration Bus TIO devices use the National Instruments Real-Time System Integration (RTSI) bus to easily synchronize several measurement functions to a common trigger or timing event. In a PCI system, the RTSI bus consists of the RTSI bus interface and a ribbon cable.
  • Page 40 10 MHz PXI backplane clock. By using other PXI modules that phase lock their board clocks to the 10 MHz PXI backplane clock, you can better synchronize operation in a multi-module PXI system. The phase locking is © National Instruments 3-15 NI 660x User Manual...
  • Page 41 Do not connect the +5 V power pin directly to D GND, R GND, or any pin configured for output on NI 660x devices, or any voltage source or output pin on another device. Doing so can damage the device and the computer. National Instruments is not liable for damages resulting from such a connection.
  • Page 42 Crosstalk mainly occurs when the capacitance between lines in a cable induces a smaller transition on another line. Figure 3-10 shows an example of crosstalk. © National Instruments 3-17 NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 43 Chapter 3 Signal Connections Cable PFI 11 Capacitance PFI 10 PFI 10 PFI 11 Figure 3-10. Crosstalk Example In Figure 3-10, PFI 10 and PFI 11 are configured as inputs. V drives PFI 10 and V drives PFI 11. When PFI 10 (the offending line) transitions from one state to another, it induces a small transition in PFI 11 (the victim line).
  • Page 44 PFI 0 PFI 1 PFI 2 PFI 3 PFI 4 PFI 5 PFI 6 PFI 7 PFI 8 PFI 9 © National Instruments 3-19 NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 45 Chapter 3 Signal Connections Table 3-8. Signals and D GND Pin Number on 68-Pin Connector Block (Continued) PFI Number Pin Number for D GND PFI 10 PFI 11 PFI 12 PFI 13 PFI 14 PFI 15 PFI 16 PFI 17 PFI 18 PFI 19 PFI 20...
  • Page 46 Note Before using a voltage follower or series termination, use digital filtering to eliminate measurement errors. © National Instruments 3-21 NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 47 Chapter 3 Signal Connections Figure 3-12 shows an example of parallel and series termination. Driving Signal Receiving Signal Receiving Signal Driving Signal Other Other 660x 660x Device Device Parallel Termination Series Termination Figure 3-12. Parallel and Series Termination Example NI 660x User Manual 3-22 ni.com Artisan Technology Group - Quality Instrumentation ...
  • Page 48 • System Integration—If you have time constraints, limited in-house technical resources, or other project challenges, National Instruments © National Instruments NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 49 Appendix A Technical Support and Professional Services Alliance Partner members can help. To learn more, call your local NI office or visit ni.com/alliance • Declaration of Conformity (DoC)—A DoC is our claim of compliance with the Council of the European Communities using the manufacturer’s declaration of conformity.
  • Page 50 2-8 pad synchronization, 2-2 Declaration of Conformity (NI resources), A-2 settings (table), 3-3 diagnostic tools (NI resources), A-1 © National Instruments NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 51 3-16 power-on state, 3-3 MITE, 1-1 prescaling, 2-1 programmable function interfaces, 3-1 programming examples, NI resources, A-1 National Instruments support and register-level, 2-12 services, A-1 pulse width noise, 3-3, 3-17 digital filtering, 3-2 table, 3-3 minimum, 3-10, 3-12...
  • Page 52 3-14 NI resources, A-1 register-level programming, 2-12 specifications, 1-1 stable frequency change in, 2-11 start triggers, 3-13 support, technical, A-1 © National Instruments NI 660x User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

This manual is also suitable for:

66016602660 seriesPxi-6602Pxi-6608