Anonymous Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
BNC-2121
BNC-2121, 68-Pin Female SCSI, TTL Compatible, Terminal Block
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 BNC-2121 Terminal Block
Designed for NI-660X devices, the NI BNC-2121 (Part Number: 778289-01, 186906D-01L) is a Terminal Block. This Terminal Block allows seamless and quick connectivity to a NI-660X counter device. With this connector accessory, you can also test various functions and features of your counter device. The BNC-2121 can be used for any installed NI-660X device via a 68-position cable. One end of the 68-position cable is connected to the I/O connector of the connector accessory and the other end is connected to your NI-660X device.
This accessory comes equipped with a power status LED. The National Instruments BNC-2121 Terminal Block offers signal connectivity through BNC connectors and screw terminals. This accessory has two major connectivity areas: the user-defined functions and the PFI lines. The PFI lines contain bidirectional spring terminals and BNC connectors. The spring terminals and BNC connectors provide access to the PFI (Programmable Function Interface) lines on the target NI-660X device. Each digital I/O comes with an associated LED indicator, which shows the operating status of the relevant digital I/O.
The NI BNC-2121 comes with a variety of user-defined functions, including 6 output spring terminals, 6 user-defined BNC connectors, and 6 user-defined bidirectional spring terminals. The 6 user-defined BNC connectors are internally mapped to the matching BNC connectors. This Terminal Block features an integrated lowpass filter to provide you with a smoother trigger output without significant glitches. The National Instruments BNC-2121 Terminal Block can generate 24 pulses/encoder revolution. This Terminal Block comes with 2 spring terminals for quadrature encoders. The function generator in the BNC-2121 can generate TTL compatible square waves.
| Model | BNC-2121 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 778289-01, 186906D-01L |
| HTS Code | 8536694010 |
| Type | Terminal Block |
| Back-End Connection | 68-Pin Female SCSI |
| Front-End Connection | Female BNC and Screw Terminals |
| Compatible Models | NI-660X counter devices |
| Field Connections | 6 BNC connectors |
| Dimensions | 10.69 by 4.41 by 2.05 in. |
| BNC-2121 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for BNC-2121:
Delivery:
Eligible returns may be accepted within 30 days at Apex Waves’ discretion. A 25% restocking fee applies; non-refundable and built-to-order products are excluded.
Payment:
Receive Price & Availability Today!
Ask About Our Tiered Calibration Levels
Option & Modules:
Confirm Your Requirements or Versions
Cost & Lead Time Available Upon Request for Service
Repair Evaluation: $150
Common Typos:
Why Buy From Apex Waves:
