Product Introduction
Земля NI PXI-6143 is an 8-channel simultaneous-sampling PXI multifunction data acquisition module designed for applications requiring precise time correlation between multiple analog signals.
The PXI-6143 provides 8 differential analog input channels, 16-битное разрешение, and simultaneous sampling rates up to 250 kS/s per channel. Unlike multiplexed multifunction DAQ modules that share one ADC across multiple channels, the PXI-6143 uses dedicated analog-to-digital conversion resources to acquire all analog input channels simultaneously.
The module also integrates 8 bidirectional digital I/O lines, two 24-bit counter/timers, digital triggering, and PXI synchronization capabilities. These features make the PXI-6143 suitable for high-energy physics, ultrasonic testing, sonar systems, ballistics, transient signal acquisition, multiaxis control, and synchronized laboratory measurements.
Product Overview
Земля National Instruments PXI-6143 belongs to the NI 61xx simultaneous-sampling multifunction I/O family, historically known as the NI S Series.
Its primary advantage is simultaneous analog acquisition. All eight analog input channels can be sampled at the same instant, maintaining accurate phase and timing relationships between signals.
This architecture is particularly important when measuring transient events, vibration-related signals, ultrasonic signals, multichannel control systems, and other applications where even small channel-to-channel timing differences can affect measurement results.
Key Features
8 Simultaneously Sampled Analog Inputs
The PXI-6143 provides eight differential analog input channels with simultaneous sampling capability.
- 8 differential analog input channels
- Simultaneous acquisition across all channels
- Independent analog-to-digital conversion
- Accurate channel-to-channel timing
- Suitable for phase-related measurements
Advantage: Because all eight channels are sampled simultaneously, the PXI-6143 avoids the interchannel time skew associated with multiplexed DAQ architectures.
250 kS/s Per Channel Sampling
Each analog input channel supports sampling rates up to 250 kS/s.
- 250 kS/s maximum sampling rate per channel
- 8 channels sampled simultaneously
- Up to 2 MS/s aggregate analog acquisition
- Измерения с аппаратным синхронизацией
- Continuous multichannel acquisition
Advantage: The per-channel sampling architecture provides predictable acquisition performance even when all eight channels are enabled.
16-Bit Analog Input Resolution
The PXI-6143 provides 16-bit analog-to-digital conversion for accurate multichannel voltage measurements.
- 16-bit ADC resolution
- High-resolution voltage acquisition
- Dynamic signal measurements
- Transient waveform acquisition
- Laboratory and automated testing
±5 V Maximum Analog Input Range
The PXI-6143 supports bipolar analog input ranges with a maximum measurement range of ±5 V.
- Maximum analog input range: ±5 V
- Differential voltage measurement
- High input impedance
- Suitable for conditioned analog signals
Advantage: Multiple input ranges allow the measurement system to be optimized for different signal amplitudes while maintaining useful ADC resolution.
True Simultaneous Sampling Architecture
One of the most important characteristics of the PXI-6143 is its simultaneous-sampling architecture.
In a conventional multiplexed DAQ device, multiple analog channels are sequentially connected to a shared ADC. This introduces a small time delay between measurements on different channels.
The PXI-6143 eliminates this multiplexing delay by sampling all eight analog channels simultaneously.
- No multiplexing delay between analog channels
- Improved phase correlation
- Accurate transient capture
- Suitable for synchronized multichannel measurements
8 Bidirectional Digital I/O Lines
The PXI-6143 provides eight bidirectional digital I/O channels for monitoring and controlling external digital devices.
- 8 bidirectional DIO lines
- Digital input operation
- Digital output operation
- External device control
- Digital status monitoring
- Automated test fixture integration
Two 24-Bit Counter/Timers
The PXI-6143 includes two general-purpose 24-bit counter/timers for digital timing and measurement applications.
- 2 counter/timers
- 24-bit resolution
- Frequency measurement
- Period measurement
- Pulse-width measurement
- Подсчет событий
- Генерация импульсов
Advantage: Integrated counters allow timing measurements and pulse operations to be performed without requiring a separate counter/timer module.
Digital Triggering
The PXI-6143 supports digital hardware triggering for deterministic acquisition.
- Digital start triggering
- Reference triggering
- External trigger inputs
- Event-based acquisition
- PXI synchronization
Advantage: Hardware triggering enables acquisition to be synchronized precisely with external test events.
68-Pin VHDCI Connectivity
The PXI-6143 uses a 68-контактный разъем VHDCI for analog, digital, timing, and trigger connections.
- 68-pin VHDCI interface
- Compact high-density connection
- Compatible NI cables and terminal accessories
- Convenient test fixture integration
NI-DAQmx Software Support
The PXI-6143 is supported by the NI-DAQmx driver, providing software APIs for configuring and controlling acquisition, digital I/O, counters, timing, and triggering.
- NI-DAQmx driver support
- Интеграция LabVIEW
- NI MAX configuration
- TestStand integration
- Разработка на C/C++
- .NET application development
Technical Specifications
| Параметр | Описание |
|---|---|
| Product Type | PXI Simultaneous-Sampling Multifunction I/O Module |
| Модель | NI PXI-6143 |
| Product Family | NI 61xx Simultaneous Sampling Multifunction I/O / S Series |
| Шинный интерфейс | PXI |
| Analog Inputs | 8 Differential |
| Sampling Architecture | Simultaneous Sampling |
| Analog Input Resolution | 16 Bit |
| Maximum Sample Rate | 250 kS/s Per Channel |
| Maximum Aggregate Sampling | 2 MS/s Across 8 Channels |
| Maximum Analog Input Range | ±5 V |
| Input Impedance | 100 MΩ in Parallel with 10 pF |
| Цифровой ввод-вывод | 8 Bidirectional Lines |
| Counter/Timers | 2 |
| Counter Resolution | 24 Bit |
| Запуск | Digital Triggering |
| I/O Connector | 68-Pin VHDCI |
| Driver | НИ-DAQmx |
| Primary Applications | Transient Acquisition, Ultrasonic Testing, Sonar, Ballistics, High-Energy Physics and Multiaxis Control |
Simultaneous Sampling Explained
The most important difference between the PXI-6143 and many general-purpose multifunction DAQ modules is the way analog signals are digitized.
A multiplexed DAQ module typically uses one ADC and switches between multiple input channels. Although this architecture provides a high channel count at relatively low cost, each channel is sampled at a slightly different time.
The PXI-6143 is designed specifically for simultaneous sampling. Its eight analog channels can acquire data at the same instant, preserving the timing relationship between signals.
This capability is particularly important when analyzing phase relationships, rapidly changing transient events, synchronized sensor outputs, and multichannel control signals.
Analog Input Capabilities
The PXI-6143 provides eight differential analog input channels with 16-bit resolution and sampling rates up to 250 kS/s on every channel.
Because each channel can operate at the full sampling rate simultaneously, an eight-channel acquisition can provide an aggregate sampling throughput of up to approximately 2 MS/s.
This makes the PXI-6143 particularly useful when acquisition speed must remain constant regardless of the number of active channels.
Industries
- Аэрокосмическая и оборонная промышленность
- Automotive Testing
- Ultrasonic Inspection
- Исследовательские лаборатории
- High-Energy Physics
- Industrial Measurement
- Electronic Validation
- Automated Test Equipment
- Multiaxis Control Systems
Applications
Ultrasonic Testing
Simultaneous sampling makes the PXI-6143 suitable for ultrasonic measurement systems where the timing relationship between multiple received signals is important.
- Ultrasonic signal acquisition
- Multi-sensor measurements
- Time-of-flight analysis
- Non-destructive testing research
Sonar Testing
The module can acquire multiple synchronized sonar channels for research and validation applications.
- Sonar signal acquisition
- Multichannel waveform recording
- Phase-related analysis
- Signal timing measurements
Transient Signal Acquisition
The PXI-6143 is particularly useful for events that occur rapidly across several channels.
- Transient waveform capture
- Impact measurements
- Dynamic event recording
- Multichannel event analysis
Ballistics Testing
NI identifies ballistics as one of the application areas for simultaneous-sampling S Series DAQ devices such as the PXI-6143.
- High-speed event acquisition
- Multiple synchronized sensor measurements
- Transient signal analysis
- Automated test recording
High-Energy Physics
The synchronized analog input architecture can be used for research systems that require simultaneous acquisition of multiple transient signals.
Multiaxis Control
The PXI-6143 can acquire feedback signals from multiple axes simultaneously, helping maintain accurate timing relationships between control measurements.
- Position feedback acquisition
- Multi-axis monitoring
- Synchronized control measurements
- Motion system research
PXI-6143 vs Multiplexed Multifunction DAQ
| Функция | ПХИ-6143 | Typical Multiplexed DAQ |
|---|---|---|
| Analog Input Architecture | Simultaneous Sampling | Multiplexed |
| ADC Timing | Channels Sampled Simultaneously | Channels Sampled Sequentially |
| Channel-to-Channel Time Skew | Very Low | Depends on Scan Rate |
| Наилучшее использование | Time-Correlated Dynamic Signals | General-Purpose Data Acquisition |
| Типичные применения | Transient, Ultrasonic, Sonar and Multiaxis Measurements | Monitoring, Data Logging and General Automated Test |
Comparison with Similar NI DAQ Modules
| Модель | Основное различие | Best Application |
|---|---|---|
| NI PXI-6143 | 8 simultaneously sampled AI channels, 16-bit resolution and 250 kS/s per channel. | Synchronized multichannel and transient measurements |
| NI PXI-6133 | 8-channel simultaneous-sampling S Series DAQ with significantly higher per-channel sampling performance. | Higher-speed transient and dynamic signal acquisition |
| NI PXI-6132 | Related S Series simultaneous-sampling multifunction DAQ module. | Synchronized analog measurements and automated test |
| NI PXIe-6124 | PXI Express simultaneous-sampling multifunction I/O module for newer PXIe systems. | PXI Express synchronized data acquisition |
Recommended Related Products
| NI PXI-6133 | Higher-speed simultaneous-sampling PXI DAQ module for applications requiring faster transient acquisition. |
| NI PXIe-6124 | PXI Express simultaneous-sampling DAQ option for newer modular test systems. |
| NI PXI-6259 | Higher-channel-count multifunction DAQ for applications where simultaneous analog sampling is not required. |
Why Choose NI PXI-6143?
- 8 differential analog input channels
- True simultaneous sampling
- 16-bit analog input resolution
- 250 kS/s sampling per channel
- Up to 2 MS/s aggregate acquisition across eight channels
- ±5 V maximum analog input range
- 8 bidirectional digital I/O lines
- 2 × 24-bit counter/timers
- Digital hardware triggering
- 68-pin VHDCI connectivity
- NI-DAQmx software support
- Excellent for time-correlated measurements
- Suitable for transient signal acquisition
- Designed for synchronized multichannel measurements
Frequently Asked Questions
What is the NI PXI-6143?
The NI PXI-6143 is an 8-channel simultaneous-sampling PXI multifunction data acquisition module with 16-bit analog input resolution, sampling rates up to 250 kS/s per channel, eight bidirectional digital I/O lines, and two 24-bit counter/timers.
How many analog input channels does the PXI-6143 have?
The PXI-6143 provides eight differential analog input channels.
Does the PXI-6143 support simultaneous sampling?
Yes. Simultaneous sampling is one of the primary features of the PXI-6143. All eight analog input channels can be sampled at the same time, preserving the timing relationship between acquired signals.
What is the maximum sampling rate of the PXI-6143?
The PXI-6143 supports sampling rates up to 250 kS/s per analog input channel. Because all eight channels can operate simultaneously, the aggregate acquisition rate can reach approximately 2 MS/s.
What is the resolution of the PXI-6143?
The PXI-6143 provides 16-bit analog input resolution.
What is the maximum input range of the PXI-6143?
The maximum analog input measurement range of the PXI-6143 is ±5 V.
How many digital I/O lines does the PXI-6143 have?
The PXI-6143 provides eight bidirectional digital I/O lines.
Does the PXI-6143 have counter/timers?
Yes. The PXI-6143 provides two 24-bit general-purpose counter/timers for frequency, period, pulse-width, event-counting, and pulse-generation applications.
What connector does the PXI-6143 use?
The PXI-6143 uses a 68-контактный разъем VHDCI. Compatible cables and terminal blocks should be selected according to the required signal connection and test system configuration.
What is the difference between PXI-6143 and PXI-6259?
The most important difference is the analog input architecture. The PXI-6143 provides eight simultaneously sampled analog input channels, making it suitable for measurements where channel-to-channel timing is critical. The PXI-6259 provides a larger number of analog inputs but uses a multiplexed acquisition architecture, making it more suitable for general-purpose high-channel-count data acquisition.
What is the difference between PXI-6143 and PXI-6133?
Both are S Series simultaneous-sampling PXI DAQ modules. The PXI-6143 provides 250 kS/s per channel and is optimized for moderate-speed synchronized acquisition, while the PXI-6133 provides substantially higher per-channel sampling performance for faster transient signals.
What software supports the PXI-6143?
The PXI-6143 is supported by NI-DAQmx and can be integrated into compatible LabVIEW, NI MAX, TestStand, C/C++, and .NET measurement applications.
What applications is the PXI-6143 designed for?
Typical applications include high-energy physics, ultrasonic testing, sonar testing, ballistics, transient signal acquisition, synchronized sensor measurements, multiaxis control, laboratory research, and automated testing.
Is PXI-6143 suitable for phase-related measurements?
Yes. Because the analog input channels are sampled simultaneously, the PXI-6143 is particularly useful when maintaining the timing and phase relationship between multiple signals is important.
Заключение
Земля NI PXI-6143 Simultaneous-Sampling Multifunction I/O Module is designed for measurement applications where accurate timing correlation between multiple analog signals is more important than simply maximizing channel count. With eight differential simultaneously sampled analog inputs, 16-bit resolution, 250 kS/s per-channel acquisition, eight digital I/O lines, two 24-bit counters, digital triggering, and NI-DAQmx support, the PXI-6143 is particularly well suited for ultrasonic testing, sonar, transient acquisition, high-energy physics, ballistics, multiaxis control, and synchronized automated measurement systems.
