Description
National Instruments NI 9232 Sound and Vibration Input Module BNC 784397-01. NI 9232: 3-Channel, ±30 V, 24-Bit C Series Sound & Vibration Input Module (BNC Connector Version). Each BNC acts as adifferential pair BNC Connector. 0 BNC 0 AI0+, AI0– (Differential Pair). Key BNC & Module Features. NI 9232 (BNC Version) English Description NI 9232: 3-Channel, ±30 V, 24-Bit C Series Sound & Vibration Input Module (BNC Connector Version) Overview The NI 9232 (BNC) is a 3-channel, simultaneously sampled C Series dynamic signal acquisition module optimized for high-accuracy sound and vibration measurements. It features BNC connectors for direct, low-noise connection to IEPE (accelerometers, microphones) and non-IEPE sensors, with 60 VDC channel-to-earth isolation . BNC Terminal Configuration The BNC version equips three standard BNC connectors (one per channel) for differential/single-ended signal input. Each BNC acts as a differential pair : Center Pin : AIx+ (Signal Positive) — carries analog input; provides 4 mA IEPE excitation (software-configurable). Outer Shield : AIx– (Signal Negative / Ground Return) — signal reference and excitation return path. 表格 ChannelBNC ConnectorSignal Function0 BNC 0 AI0+, AI0– (Differential Pair) 1 BNC 1 AI1+, AI1– (Differential Pair) 2 BNC 2 AI2+, AI2– (Differential Pair) Key BNC & Module Features Connector Type : 3 × standard 50 Ω / 75 Ω BNC coaxial connectors Isolation : 60 VDC continuous channel-to-earth ground (CAT I) Input Range : ±30 V (full-scale); overvoltage protection ±15 kV ESD IEPE Support : Software-selectable 0 mA / 4 mA constant-current excitation Coupling : Per-channel AC/DC coupling (AC: 0.1 Hz high-pass filter) ADC : 24-bit Delta-Sigma per channel; 102.4 kS/s/ch simultaneous sampling Bandwidth : 41 kHz (anti-aliasing filters auto-track sampling rate) TEDS : IEEE 1451.4 Class I smart sensor support Environmental : -40 °C to +70 °C operating temp; 5.6 oz (159 g) weight NI Part Number : 784397-01 (BNC version) Typical Applications Industrial accelerometer & vibration monitoring Acoustic / microphone measurements High-voltage dynamic signal sensing Condition monitoring (rotating machinery) CompactDAQ / CompactRIO test systems BNC Connection Notes Use 50 Ω or 75 Ω coaxial cables for low noise. BNC shielding preserves signal integrity in high EMI environments. IEPE sensors connect directly to BNC; excitation enabled in software. Non-IEPE (e.g., voltage probes) use DC coupling with 0 mA excitation. On May 18, 2026 at 02:26:46 PDT, seller added the following information: