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July 2025
PXI-6683H
PXI-6683H, 5 SMB Male Connectors, RJ-45 Ethernet, PXI Synchronization Module
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
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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
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May 2025
Gregg Flecki**** Verified Buyer
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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-6683H PXI Synchronization Module
The National Instruments PXI-6683H Synchronization Module has a GPS receiver, which controls a dynamic GPS antenna and processes the RF signals (1.575 GHz) from the satellites. The GPS receiver then creates an extremely exact pulse per second (PPS) that the NI PXI-6683H uses to accomplish sub-microsecond synchronization.
The GPS is an arrangement of more than 2 dozen satellites in medium Earth orbit that are continually transmitting signals down to Earth. GPS receivers can distinguish these signals and determine area, speed, direction, and time very precisely. GPS satellites are fitted with atomic clocks, and the signals they transmit to Earth contain timing data. This makes the GPS framework a precise timing and synchronization source.
IRIG-B is another important function on the NI PXI-6683H, which is a standard used to transmit exact timing data between instruments to accomplish synchronization. IRIG-B is a specific use of the IRIG standard, in which 100 bits of information are sent each second. Inserted in the information is a seconds' limit marker that the accepting instrument uses to synchronize its time base to the IRIG source. Whatever is left of the information contains data, such as the time of day, days since the start of the year, and, alternatively, control functions and the quantity of seconds since the beginning of the day, encoded as a straight binary number. The NI PXI-6683H module is equipped for utilizing a PPS (pulse per second) signal for synchronization.
The chassis requirement for the synchronization module is a single 3U CompactPCI slot, a PXI slot, or a PXIe hybrid slot. The front panel of the device features a range of connector types, including 5 SMB male connectors and a single standard RJ-45 Ethernet connector. Two LED indicators on the front panel of the module provide a quick visual guide to the statuses of both the GPS and IEEE 1588 as well as the Ethernet link speed.
The PXI-6683H is no longer available direct from National Instruments, but it will remain available in perpetuity with Apex Waves!
| Model | PXI-6683H |
|---|---|
| Manufacturer | National Instruments |
| Type | PXI Synchronization Module |
| Onboard Clock Type | TCXO |
| Long-Term Stability Specification | ±1 ppm/year |
| Supported Protocols | GPS, IEEE 1588, IRIG-B, or PPS |
| Chassis Requirement | One 3U CompactPCI, PXI, or PXI Express hybrid slot |
| Front Panel LED Indicators | GPS and IEEE 1588 status, Ethernet link status |
| TCXO Frequency | 10 MHz (Nominal) |
| Front Panel Connectors | 5 SMB male, 1 RJ-45 Ethernet |
| Weight | 172 g |
| PXI-6683H Manual | User Manual and Maintenance Manual Available for Download |
| Price | Request a Quote Today for Pricing |
Associated part numbers for PXI-6683H:
National Instruments PXI-6683H Frequently Asked Questions
Question: What synchronization protocols does the PXI-6683H support?
Answer: The PXI-6683H can synchronize PXI and PXI Express systems using GPS, IEEE 1588, IRIG-B, or PPS
Question: What type of front panel indicators are on the PXI-6683H?
Answer: On the PXI-6683H, there are two tricolor LEDs (green, red, and amber) for GPS and IEEE 1588 status, as well as two green/amber LEDs for Ethernet link status and speed.
Question: What is the input frequency range of the NI PXI-6683H?
Answer: The NI PXI-6683H has an input frequency range from DC to 50 MHz for the PFI lines.
Question: What is the absolute maximum input voltage of the PXI-6683H?
Answer: The absolute maximum input voltage of -0.5 V to +6.0 V is specifically for the PFI terminals when used as digital inputs.
Question: What is the square wave rise/fall time (10 to 90%) of the NI PXI-6683H?
Answer: The square wave rise/fall time (10 to 90%) on the NI PXI-6683H is less than 1 ns typical.
PXI-6683H PDF Manuals
NI-PXI-668328H29-LETTER-OF-VOLATILITY.PDF
NI-PXI-6683-SERIES-INSTALLATION-GUIDE.PDF
NOTE-TO-USERS-NI-PXI-668328H29-DOCUMENTATION-UPDAT.PDF
PXI-6683-SERIES-CALIBRATION-PROCEDURE.PDF
PXI-6683-SERIES-USER-MANUAL-AND-SPECIFICATIONS.PDF
Driver Downloads for PXI-6683H
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