National Instruments SCXI-1104C

The National Instruments SCXI-1104C Voltage Input Module (Part Number: 776572-04C, 183087H-05) is engineered to facilitate the signal conditioning of high-voltage signals, featuring 32 differential input channels. This module incorporates a 10 kHz cut-off frequency filter for effective signal processing. For users intending to integrate the SCXI-1104C into a ribbon-cabled multichassis SCXI system, it is essential to utilize the SCXI-1346 multichassis adapter for optimal performance. Should users opt out of auto-detection, manual module addition is required, detailed in the accompanying user manual. The module provides flexibility in wiring, allowing pin connections to the analog ground of the Voltage Input Module, which serves as an analog power ground tie point.

It is crucial to note that the SCXI-1104C's analog output does not feature overvoltage protection; thus, caution should be taken to avoid external voltage application that could lead to module damage. However, the analog outputs maintain short-circuit protection. The device is designed for operation within a temperature range of 0 to 50 °C, with a recommended warm-up duration of 20 minutes. Calibration can be performed by introducing precise voltages to the channel inputs or grounding them, with a suggested recalibration frequency of at least annually or whenever deployed outside the specified temperature limits. For accurate adjustments, users can utilize a multiranging 8.5 digital multimeter during the calibration process. The SCXI-1104C is compatible with NI-DAQ version 6.5.1 or higher, requiring software environments such as LabVIEW, BridgeVIEW, LabWindows/CVI, Visual Basic, C/C++, VirtualBench, or Measure to operate effectively. The module boasts a 50-pin male ribbon cable back connector and a 96-pin male DIN C front connector.

Although the SCXI-1104C has been marked as obsolete by National Instruments, it remains available for purchase and repair through Apex Waves. This module includes a comprehensive three-year warranty and accessible user and maintenance manuals for convenience and guidance.