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NI PXI-6608 185745H-02 Timing and Synchronization Module

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Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Global universal model
Condition:
Other, Global universal model
Task:
Other, Global universal model
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Guizhou Yuanmiao Automation Equipment Co., Ltd.
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Material Other, Global universal model
Condition Other, Global universal model
Task Other, Global universal model
Mathematical Model Other, Global universal model
Signal Other, Global universal model
Customized Non-Customized
Structure Other, Global universal model
Temperature 0℃–55℃
Humidity 5%–95% (non-condensing)
NI PXI-6608I. Product Positioning and Core Functions
The NI PXI-6608 is a high-performance timing and synchronization module based on the PXI bus, specifically designed for multi-device synchronization, high-precision clock generation, and complex timing control. It is widely used in scenarios such as aerospace testing, automated production lines, and multi-channel data acquisition systems. Its core features include:


  • High-Precision Clock Generation: Built-in oven-controlled crystal oscillator (OCXO) provides a stable system clock with frequency stability up to ±1 ppm, supporting clock synchronization across multiple modules.

  • Multi-Device Synchronization Mechanism: Achieves nanosecond-level synchronization for multiple modules via the PXI trigger bus, external trigger signals, and dedicated synchronization interfaces, suitable for distributed testing systems.

  • Flexible Timing Functions: Supports programmable timers, counters, and event triggering to meet timing control requirements for high-speed data acquisition, pulse width modulation (PWM), and more.

PXI-6608 185745H-02 (4)

II. Hardware Specifications and Technical Parameters
Parameter Category Specific Indicators
Clock Source - Built-in OCXO oscillator with frequency stability of ±1 ppm (0℃–55℃)
- Supports external clock input (10 MHz reference clock)
Timing and Triggering - 8 x 32-bit timers/counters, supporting frequency measurement, event counting, and PWM output
- Supports edge triggering, count triggering, and PXI bus triggering
Synchronization Interfaces - PXI system clock (100 MHz), trigger bus (TRG0–TRG7)
- Dedicated synchronization lines (SYNC IN/OUT), star trigger lines (STAR Trigger)
Electrical Characteristics - Clock output amplitude: 3.3V TTL/CMOS
- Trigger input threshold: 0.8V (low)/2.0V (high)
- Maximum output drive current: 48 mA
Operating Environment - Temperature: 0℃–55℃
- Humidity: 5%–95% (non-condensing)
- Vibration resistance: Meets industrial standards (5–500 Hz, 2 g acceleration)
Bus Compatibility - PXI 2.2 standard, supports 32-bit/33 MHz PCI bus with maximum data transfer rate of 132 MB/s

PXI-6608 185745H-02 (3)

III. Typical Application Scenarios1. Multi-Device Synchronized Testing Systems

  • Scenario: In aero-engine testing, synchronously control multi-channel data acquisition cards (e.g., NI PXI-5105 oscilloscope), signal generators (e.g., NI PXI-5441), and sensor interface modules to ensure consistent sampling clocks and avoid data errors caused by timing deviations.

  • Implementation: The NI PXI-6608 provides the system clock (100 MHz), connected to each module via star trigger lines to achieve nanosecond-level synchronization accuracy.

2. High-Precision Timing Control

  • Scenario: Laser pulse control in semiconductor manufacturing equipment requires precise timing between laser triggering and workpiece stage movement.

  • Implementation: Use the module's timer to generate PWM signals, adjust pulse width (with nanosecond-level resolution), and synchronize mechanical actions via external triggers.

3. Distributed Data Acquisition Networks

  • Scenario: Large-scale structural health monitoring systems need to synchronously collect vibration, strain, and other signals at different locations.

  • Implementation: Use the NI PXI-6608 as the master clock source, connecting remote chassis via long-distance synchronization lines (e.g., fiber optics) to eliminate cumulative errors from clock drift.

PXI-6608 185745H-02 (1)

IV. Software Support and Programming InterfacesDrivers and Development Tools

  • NI-DAQmx Driver: Compatible with platforms like LabVIEW, Python, C++, and MATLAB, providing low-level APIs for clock configuration, trigger setup, and timer programming.

  • NI MAX: Hardware configuration tool supporting clock calibration, trigger routing setup, and system self-test, enabling intuitive management of multi-module synchronization topologies.

  • Synchronization Manager: Dedicated software tool for configuring multi-module synchronization links and generating timing diagrams to verify synchronization accuracy.

LabVIEW Programming Example (Pseudocode)
plaintext
// Configure system clock synchronization (master module mode) [Create synchronization task] → Set OCXO as the clock source, output 100 MHz clock to the PXI bus   → Configure star trigger line (STAR Trigger) as the synchronization signal, connect to slave modules   → Enable trigger delay compensation to calibrate clock phase differences between modules (

PXI-6608 185745H-02 (2)

V. System Integration and Expansion SolutionsHardware Matching Recommendations

  • Clock Reference Expansion: Pair with the NI PXI-6652 atomic clock module to further enhance clock stability (±0.001 ppm), suitable for long-duration high-precision testing scenarios.

  • Long-Distance Synchronization: Use the NI PXI-6624 fiber optic synchronization module to extend synchronization signal transmission to kilometer levels, supporting distributed testing networks.

  • Anti-Interference Design: Use shielded cables for trigger lines and split ground planes (separate analog and digital grounds) to reduce electromagnetic interference (EMI) affecting clock accuracy.

Synchronization Accuracy Optimization

  • Phase Calibration: Use clock phase adjustment functions provided by NI-DAQmx to manually compensate for clock delays between modules, ensuring synchronization errors

  • Redundant Clock Design: Configure dual clock sources (e.g., OCXO + external clock) with hot-swapping support to avoid system desynchronization due to single clock source failures.

VI. Comparison with Similar Products
Model NI PXI-6608 NI PXI-6652 NI PXI-6612
Clock Stability ±1 ppm (OCXO) ±0.001 ppm (rubidium atomic clock) ±25 ppm (TCXO)
Number of Timers 8 x 32-bit 8 x 32-bit 4 x 32-bit
Synchronization Interfaces PXI trigger bus, star trigger Supports GPS clock synchronization, fiber optic interfaces PXI trigger bus (basic model)
Core Advantages High-precision industrial timing Ultra-high stability (suitable for aerospace/radar scenarios) Low-cost multi-channel timing (for education/experiments)
Application Scenarios Industrial automation, multi-device testing Aerospace, astronomical observation Basic logic control, teaching experiments
Product Tags: PXI-6608 , 185745H-02

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Guizhou Yuanmiao Automation Equipment Co., Ltd.
Verified Business License
Business Type
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Year Established
2014
Factory Size
1,000-3,000 square meters
Product Certifications
SA8000
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