The National Instruments SC-2040 is an eight-channel simultaneous sample-and-hold accessory that enhances data acquisition capabilities when used with the MIO-16E Series Data Acquisition Boards. Part number 776937-01, the SC-2040 is designed for precise differential amplification and features individually track-and-hold amplifiers for each channel to ensure simultaneous input sampling, preserving interchannel phase relationships. Configurable for power through the MIO-16E board or an external +5 V supply, the SC-2040 provides a ±10 V output range and supports DC input coupling. Connectivity includes 20 screw terminals for sensor signal leads, a 50-pin male ribbon connector, and a 68-pin male SCSI connector. The unit dimensions are 1.8 inches by 7.9 inches by 4.9 inches, and it includes LED indicators to display power status. While the SC-2040 is officially marked as obsolete, it remains available for purchase and repair through Apex Waves. Users can program this accessory using LabVIEW, register-level programming software, or LabWindows, although it requires a SH6868 or R6868 cable for operation. Comprehensive documentation, including user and maintenance manuals, can be downloaded for reference. For pricing information, please contact a sales representative.