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July 2025
PXI-6651
PXI-6651, 1 MHz to 105 MHz, PXI Timing and Synchronization Module
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free Domestic Ground Shipping
✔ 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 PXI-6651 PXI Timing and Control Module
The National Instruments PXI-6651 (Part Numbers: 778725-01, 188268D-03) is a Slave Synchronization Module designed for a PXI Chassis. This model offers full PXI start trigger bus control and is a low-cost option available for synchronizing multiple PXI chassis. The PXI-6651 comes equipped with a 10 MHz reference clock input into the chassis and two SMB connections as well for trigger line sharing. It has a CLKIN frequency range of 1 MHz to 105 MHz, SMB male front panel connectors with a nominal input impedance of 50 ohms, and requires one 3U CompactPXI slot for operation.
This module operates in slave configuration primarily and can route externally generated signals only. The front panel of the PXI-6651 has PFI <0..1> (programmable function interface) Connectors, one CLKIN Connector, one Access LED, and one Active LED. This Timing and Control Module enables the user to send and receive PXI based timing signals between two or even more PXI chassis. It can also generate and route clock signals across devices connected in multiple chassis, providing the user with an easier way for the synchronization of redundant devices in a PXI system.
To program the NI PXI-6651, the user can utilize National Instruments app development environment (ADE) programs, such as LabWindows/CVI, LabVIEW, and other third-party ADEs like Visual C/C++. The LabVIEW offers a state-of-the-art interface, interactive graphics, and a robust graphics language. This Timing and Control Module features injector/ejector handles, which allow a smooth and seamless installation of the module. The user can have the NI PXI-6651 installed in any available slot of a PXI chassis. Please note that this module is usually installed in slot 2. This module is entirely software configurable and the system allocates all of its resources automatically.
It has a recommended operating temperature range of 0 to 55 °C, a storage temperature range of -20 to 70 °C, and an operating and non-operating random vibration of 0.3 grms and 2.4 grms respectively – all at a frequency range of 5 to 500 Hz.
PXI-6651 Obsolete Status has been announced by National Instruments, but will still be available for purchase and repairs by Apex Waves.
| Model | PXI-6651 |
|---|---|
| Manufacturer | National Instruments |
| Part Numbers | 778725-01, 188268D-03 |
| Type | Timing and Synchronization Control Module |
| CLKIN Frequency Range | 1 MHz to 105 MHz, sine or square wave |
| Input Impedance | 50 Ohms, nominal |
| Chassis Requirement | One 3U CompactPCI or PXI slot |
| Front Panel Connectors | SMB male |
| Front Panel Indicators | Two tricolor LEDs (green, red, and amber) |
| PXI-6651 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for PXI-6651:
National Instruments PXI-6651 Frequently Asked Questions
Question: What is the recommended maximum cable length for the NI PXI-6651?
Answer: The NI PXI-6651 has a recommended maximum cable length of 200 m for the PFI/CLKOUT (DC to 10 MHz), 100 m for the CLKOUT (High Gain, 105 MHz), and 30 m for the PFI/CLKOUT (Low Gain, 105 MHz).
Question: Which driver software should be used with the PXI-6651?
Answer: The PXI-6651 driver software is NI-Sync.
Question: How often should the NI PXI-6651 be calibrated?
Answer: The NI PXI-6651 should be calibrated every year.
Question: What type of input coupling does the PXI-6651 have?
Answer: The PXI-6651 has AC input coupling.
PXI-6651 PDF Manuals
ARCHIVED--PXI-665X-LETTER-OF-VOLATILITY.PDF
NI-PXI-665X-USER-MANUAL-AND-SPECIFICATIONS.PDF
PXI-665X-LETTER-OF-VOLATILITY.PDF
PXI-TIMING-AND-SYNCHRONIZATION-MODULES-PRODUCT-FLYER.PDF
PXIE-6683-SERIES-USER-MANUAL.PDF
PXI-6651 Diagrams
Driver Downloads for PXI-6651
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