The National Instruments SCXI-1104D is a robust Voltage Input Module specifically engineered for the signal conditioning of high-voltage inputs. It features 32 differential channels, enabling comprehensive signal acquisition across all inputs. For optimal performance in a multichassis SCXI system using ribbon cables, the SCXI-1346 multichassis adapter is recommended. Users can configure pin connections for analog ground via software, allowing flexibility when managing power ground tie points. It is crucial to remember that the analog output of the SCXI-1104D is not protected against overvoltage; therefore, caution must be exercised to prevent damage from external voltages. The module requires a warm-up period of 20 minutes before operation and is designed to function effectively within an operating temperature range of 0 to 50 °C. Regular recalibration is advised, ideally on an annual basis or whenever operation occurs outside the designated temperature range, to maintain measurement accuracy. The module is equipped with a 50-pin male ribbon cable at the rear and a 96-pin male DIN C connector at the front. Although the SCXI-1104D has been designated as obsolete by National Instruments, it continues to be available for purchase and repairs through Apex Waves. Calibration services, including NIST-accredited options, are offered to ensure performance integrity, with a typical turnaround time of one to two weeks. For specific details on calibration or to place an order, please contact us.