National Instruments SCXI-1104

The National Instruments SCXI-1104 Voltage Input Module (Part Number: 776572-04) is designed for the efficient signal conditioning of high-voltage applications. This module, part of the SCXI Series, supports the processing of medium-voltage signals, accommodating inputs of up to 30 VACrms, ±42 VACpeak, and ±60 VDC. The SCXI-1104 features 32 multiplexed channels that consolidate into a single channel for a controlling data acquisition (DAQ) device, effectively increasing the overall channel capacity of the DAQ system. Each channel includes a three-pole low-pass filter with a cutoff frequency of 2 Hz, which effectively mitigates 60 Hz noise interference. It is important to note that the SCXI-1104 does not support ribbon-cabled multichassis configurations; users must employ the SCXI-1346 multichassis adapter for multichassis operations. The SCXIbus interface governs the module, linking the back signal connector to facilitate DAQ control over the SCXI-1104 and other modules within the chassis. The module is equipped with switches for routing multiplexer outputs and enables indirect scanning by receiving signals from other SCXI modules via the SCXIbus. Installation requires a compatible connectivity device such as the SCXI-1310, TBX-96, BNC-2095, or SCXI-1300, along with relevant software packages (e.g., VirtualBench, LabVIEW) and appropriate DAQ drivers. Physical dimensions of the SCXI-1104 are 4.54 x 10.75 inches, with operational and storage temperature ranges of 0 to 50 °C and –55 to 150 °C respectively. The unit also has a non-condensing relative humidity range of 5% to 90%. While the SCXI-1104 is classified as obsolete, it remains available for purchase and repair through Apex Waves.