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July 2025
778993-03
NI 778993-03, 16 Bidirectional LVDS Channels, 128 Mb per Channel, PXI-6561 Digital Waveform Generator/Analyzer
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
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✔ NIST Calibration Available
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
National Instruments 778993-03 LVDS Digital Waveform Generator/Analyzer
The National Instruments 778993-03 (PXI-6561) is a high-density PXI digital waveform generator/analyzer designed for demanding LVDS (low-voltage differential signaling) applications. The module combines high-speed digital generation and analysis with flexible channel configuration, making it well suited for testing and validating high-speed digital interfaces. It features 16 bidirectional LVDS channels and supports data rates of up to 200 Mb/s in DDR (Double Data Rate) mode, with a maximum clock rate of 100 MHz. Each channel includes 128 Mb of onboard memory for storing complex waveform patterns and sequences, providing ample capacity for sophisticated digital test applications. In SDR (Single Data Rate) mode, each channel also provides independent direction control, allowing the module to accommodate a wide range of test configurations.
Designed for precise timing and high-performance digital testing, the 778993-03 incorporates advanced System Management Controller (SMC) technology that enables dynamic allocation of memory resources between waveform storage and program execution. This capability makes the PXI-6561 suitable for building synchronized mixed-signal test systems alongside other SMC-based instrumentation, including digitizers and arbitrary waveform generators. The module provides a variety of trigger sources, including Start, Pause, Script Advance, and Reference triggers. Triggers can originate from the PXI backplane, front-panel connectors, or software, providing flexibility for complex test setups. User-defined events, such as markers and active data signals, can also be routed to designated locations, supporting low-skew, multi-channel test systems for high-pin-count (HPC) digital integrated circuits.
The National Instruments 778993-03 is compatible with the NI-HSDIO driver and Digital Waveform Editor, providing an interactive environment for creating, editing, and importing digital waveforms generated from simulation or spreadsheet applications. The PXI-6561 supports two primary methods of digital waveform generation: single waveform generation and scripting. Single waveform generation is suited to simple, repetitive patterns, while scripting enables the creation and execution of more complex waveform sequences.
With its hybrid-slot PXI design, the PXI-6561 can be installed in both standard PXI hybrid slots and PXI Express hybrid slots, simplifying integration into existing and new automated test systems. Its combination of high-speed LVDS signaling, flexible triggering, onboard memory, programmable waveform generation, and synchronized operation makes the 778993-03 a versatile solution for advanced digital interface testing and high-density electronic test applications.
| Model Name | PXI-6561 |
|---|---|
| Part Number | 778993-03 |
| Part Type | Digital waveform generator/analyzer |
| Max Data Rate | 200 Mb/s (DDR mode) |
| Max Clock Rate | 100 MHz |
| Channels | 16 bidirectional LVDS |
| Direction Control | Per-channel (SDR mode only) |
| Onboard Memory | 128 Mb per channel |
| Delay Resolution | 60 ps (≥ 25 MHz) |
| Gen. Skew (typ.) | ±215 ps |
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