Description
The NI PXI-6551 is a high-performance PXI Digital Instrument, designed to meet a wide range of testing and measurement needs. With a part number of 189876D-05, this instrument falls under the category of PXI Digital Instruments, emphasizing its compatibility and integration with PXI systems.
The PXI-6551 model boasts a significant feature set, including a maximum clock rate of 50 MHz and a flexible memory configuration that supports 1 Mb/channel (part number 778538-01), 8 Mb/channel (part number 778538-02), and 64 Mb/channel (part number 778538-03), allowing users to tailor the device to their specific application needs. Furthermore, it offers a generous number of channels, with a total of 20, enhancing its utility in multi-channel data acquisition and generation scenarios.
The instrument is described as “NI PXI-6551 50 MHZ, 8 Mb/ch Dig Wfm; Programmable; -2.0 to 5.5 V”, highlighting its digital waveform generation and analysis capabilities, programmability, and a wide range of output levels to accommodate various signal types and amplitudes. It demands a maximum power of 26.5 W, ensuring efficient operation within PXI chassis environments.
Compatibility with driver software is critical for seamless integration and ease of use. The PXI-6551 is supported by NI-HSDIO driver software, which facilitates the development of custom applications and automation scripts. Users can leverage popular development environments such as LabVIEW, LabVIEW SignalExpress, LabWindows/CVI, and other text-based environments, ensuring broad compatibility and flexibility in application development.
Despite being announced as obsolete by National Instruments, the PXI-6551 remains available for purchase and repairs through Apex Waves, underscoring its continued relevance and demand in the market. To maintain optimal performance, calibration services are available and recommended annually or every two years, ensuring long-term reliability and accuracy.
| Specification | Detail |
|---|---|
| Part Number | 189876D-05 |
| Category | PXI Digital Instruments |
| Model | PXI-6551 |
| Description | NI PXI-6551 50 MHZ, 8 Mb/ch Dig Wfm; Programmable; -2.0 to 5.5 V |
| Part Numbers | 778538-01, 778538-02, 778538-03, 188524K-24L |
| Memory Options | 1 Mb/channel (778538-01), 8 Mb/channel (778538-02), 64 Mb/channel (778538-03) |
| Maximum Clock Rate | 50 MHz |
| Number of Channels | 20 |
| Maximum Power Requirement | 26.5 W |
| Driver Software | NI-HSDIO |
| Compatible Development Environments | LabVIEW, LabVIEW SignalExpress, LabWindows/CVI, and other text-based environments |
| Obsolete Status | Announced by National Instruments; available for purchase and repairs by Apex Waves |
| Calibration | Available; recommended annually or every two years |
Question 1: What is the max clock rate of PXI-6551?
Answer 1: 50 MHz
Question 2: How many channels does the PXI-6551 support?
Answer 2: 20 channels
Question 3: What voltage range can the PXI-6551 output?
Answer 3: -2.0 to 5.5 V
Question 4: What is the maximum memory per channel for PXI-6551?
Answer 4: 8 Mb/channel
Question 5: Is the PXI-6551 still available for purchase?
Answer 5: Yes, through Apex Waves


