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July 2025
PXI-2503 In Stock | Ships Today
PXI-2503, 10 MHz Bandwidth, 68-Pin SCSI Connector, PXI Multiplexer Switch Module
Rated 4.5/5 | 13 ratings
Actual item may vary if no part number is provided on quote request.
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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
" 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-2503 PXI Multiplexer Switch Module
The NI PXI-2503 (Part Number: 777697-01) is a 1-, 2-, or 4-wire PXI multiplexer switch module. The PXI-2503 has the options of 6, 12, 24, or 48 channels, as well as a hybrid connector. This model utilizes electromechanical relays for accurate measurements. For deterministic scanning, it provides a 1,024-step scan list. The NI PXI-2503 consists of a 2-wire multiplexer in PXI format with a variety of topologies. This model is offered with the Windows-based NI-SWITCH software that you can use to configure and operate your PXI-2503 switch card. With this model, the user can utilize software-configurable switches to get the PXI-2503 configured as a 48 x 1, 1-wire multiplexer for achieving many measurements at a common reference. Besides, this electromechanical switch can operate as a 12 x 1, 4-wire multiplexer for making resistive measurements such as RTDs or thermistors. The device has a switch bandwidth of 10 MHz. Finally, users can also get this card configured as a 4 by 2-wire matrix with the help of a National Instruments TB-2606 terminal block.
For more challenging applications, multiple PXI-2503 modules can also be used in combination. As an example, consider a 48 x 1, 2-wire multiplexer that can be formed by connecting two cards. The NI PXI-2503 supports a 4-wire analog bus as well. Thus, the user can connect the 4-wire analog bus to the switch through its main connector provided on the front panel—it is equipped with a 68-pin male SCSI I/O connector. Using an analog bus makes the creation of large systems possible through redundant switch cards. The advanced scanner trigger and the external trigger input are used to handshake the National Instruments PXI-2503 with external instruments or PXI instruments. The device weighs 8 oz. and measures 8.5 x 0.8 x 5.1 in. in physical dimensions. It has a power requirement of 370 mA typical and 700 mA maximum at +5 VDC, a relay operating time of 3 ms typical and 5 ms maximum at 20 °C, and an expected mechanical and electrical life expectancy of 5 x 10â· and 2 x 10âµ cycles, respectively. The NI instrument has a recommended operating temperature range of 0 °C to 50 °C and a storage temperature range of -20 °C to 70 °C.
| Model | PXI-2503 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 777697-01 |
| Type | PXI Multiplexer Switch Module |
| Banks | 1, 2, 4 |
| Channels | 6, 12, 24, 48 |
| Switch Bandwidth | 10 MHz |
| I/O Connector | 68-Pin SCSI Connector Type |
| Power Requirement | 370 mA typical, 700 mA maximum |
| Operating Temp Range | 0°C to 50°C |
| Storage Temp Range | -20°C to 70°C |
| Dimensions | 8.5 x 0.8 x 5.1 in. |
| Weight | 8 oz. |
| Warranty | 2-3 Year Warranty |
| PXI-2503 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Request a Quote |
Associated part numbers for PXI-2503:
National Instruments PXI-2503 Frequently Asked Questions
Question: What type of relays does the PXI-2503 have?
Answer: The Multiplexer Switch Module has electromechanical relays.
Question: What are the maximum switching voltage and current DC for the switch module?
Answer: The NI PXI-2503 has a maximum switching voltage DC of 60 V and a maximum switching current DC of 1 A.
Question: What is the scan rate of the PXI-2503?
Answer: The scan rate is 100 cycles/s.
Question: How much does the PXI-2503 weigh?
Answer: The Multiplexer Switch Module weighs 8 oz.
| Accessory Type | Model Name | Part Number |
|---|---|---|
| Front Mounted Terminal Block | TB-2606 | 777879-01 |
| Cable | SH68-68-S | 185262-01 (1 m) |
| 185262-02 (2 m) | ||
| 185262-05 (5 m) | ||
| Remote Terminal Block | TBX-68 | 777141-01 |
| TBX-68S | 777716-01 |
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