Anonymous Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
SCXI-1581 In Stock | Ships Today
SCXI-1581, 32 Single-ended Output, Analog Output Module
Rated 4.9/5 | 18 ratings
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free 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 SCXI-1581 Analog Output Module
The NI SCXI-1581 (Part Number: 777966-81) can be used with the following terminal blocks: SCXI-1300, SCXI-1310, BNC-2095, or TBX-96. The SCXI-1300 is a Front-Mount Terminal Block with screw terminals. Next, the SCXI-1310 is a custom kit designed for custom connections. The BNC-2095 is a Rack-Mount Terminal Block for BNC connections. Finally, the TBX-96 is a DIN EN Mount Terminal Block with screw terminals. Also, the user should note that when the SCXI-1300 is linked to the SCXI-1581 module, it is not possible to measure the onboard temperature sensor.
This Analog Output Module has 32 channels with 100 µA current excitation. The extreme preciseness and dependability of the current sources ensures they are ideal for measuring resistance with the utmost preciseness. When the SCXI chassis is turned on, the 32 current sources on the SCXI-1581 are enabled. The SCXI 1581 is well-suited in any application involving a 100 µA fixed current excitation like RTDs and thermistors. This module can be used in conjunction with the SCXI-1102 to result in a high-channel-count RTD measurement system.
The back signal connector on the NI SCXI-1581 Analog Output Module is utilized for linking and communication between the module and an E/M Series DAQ instrument. The CH0 signal pair is utilized for transmitting analog signals from other modules to the linked E/M Series DAQ instrument in multiplexed mode. If the SCXI 1581 is linked straight to an E/M Series DAQ instrument, then the remaining analog channels of the E/M Series DAQ instrument can be used for general-purpose analog input since they are not linked to the SCXI-1581 in multiplexed mode.
SCXI-1581 Obsolete Status has been announced by National Instruments, but the module will still be available for purchase and repairs by Apex Waves.
| Model | SCXI-1581 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 777966-81 |
| Type | Analog Output Module |
| Channels | 32 |
| Current Output | 100 µA |
| Overvoltage Protection | ±40 VDC |
| Dimensions | 7.4 x 6.8 x 1.2 in. |
| Weight | 25.8 oz. |
| Warranty | 2-3 Year Warranty |
| SCXI-1581 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for SCXI-1581:
National Instruments SCXI-1581 Frequently Asked Questions
Question: How can you use the SCXI-1581 for high-channel-count RTD measurements?
Answer: The SCXI-1581 can be paired with the SCXI-1102 module for high-channel RTD measurements.
Question: How are the current sources on the NI SCXI-1581 activated?
Answer: The 32 current sources on the NI SCXI-1581 are activated whenever the SCXI chassis is powered-on.
Question: Does the SCXI-1300 work with the SCXI 1581 in any way?
Answer: Yes, signals from each channel of the SCXI 1581 connect to screw terminals located in the SCXI-1300 terminal block. The SCXI-1300 plugs directly into the front of the module.
Question: Can you use a TBX-96 with the NI SCXI-1581?
Answer: Yes, you can use the TBX-96 by connecting it to the NI SCXI-1581 with the SH96-96 cable.
SCXI-1581 PDF Manuals
BNC-TC-2095-RACK-MOUNT-ADAPTER-INSTALLATION-GUIDE-AND-SPECIFICATIONS.PDF
GUIDE-DE-DC3A9MARRAGE-SCXI--DOCUMENT-MULTILINGUE---ANGLAIS-FRANC3A7AIS-ET-ALLEMAND-.PDF
NI-SCXI-VOLTAGE-AND-THERMOCOUPLE-INPUT-MODULES---DATASHEET.PDF
Driver Downloads for SCXI-1581
OS Compatibility: …
Delivery:
No hassle return policy.
Dedicated customer service team.
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:
