24-Channel, 120 Ω Quarter-Bridge Strain/Bridge Input Module for SCXI—The SCXI‑1521B is a strain/bridge input module. The high channel density makes it ideal for high channel count test cell applications such as static and fatigue structural test using 120 Ω quarter‑bridge strain gauges. This module features software-selectable voltage excitation, a lowpass filter, and 120 Ω completion resistors. You also need the SCXI‑1317 front mount terminal block to use the SCXI‑1521B.