NI SCXI-1304 AC/DC Coupling Screw Terminal Block

The NI SCXI-1304 is a shielded screw terminal block supporting configurable AC or DC coupling per channel. It is designed to work with SCXI signal conditioning modules such as SCXI-1141, SCXI-1142, SCXI-1120D and SCXI-1125 for dynamic analog signal wiring.

This legacy terminal accessory provides configurable ground referencing via built-in bias resistors for floating signal sources. It is widely stocked as spare parts for vibration test benches, dynamic measurement systems and old NI SCXI platform maintenance projects.

Main Specifications

• Brand: NI (National Instruments); Model: SCXI-1304; Type: AC/DC Coupling Screw Terminal Block
• Terminals: 22 screw terminals, compatible with standard field sensor wiring
• Signal Configuration: Per-channel AC/DC coupling selection, configurable ground reference
• Matching Modules: SCXI-1120D, SCXI-1125, SCXI-1140, SCXI-1141, SCXI-1142, SCXI-1143
• Structure: Shielded housing for suppressing external electromagnetic interference
• Operating Environment: 0℃ ~ +50℃, 5%‑95% RH non‑condensing
• Certifications: CE, conform to measurement safety and industrial EMC standards

Core Functions

• Connect external sensor signals to compatible SCXI analog conditioning modules reliably.
• Support channel-wise AC or DC coupling setup to adapt dynamic and static measurement signals.
• Built-in 100 kΩ bias resistors provide ground reference for floating input signal sources.
• Shielded enclosure reduces high-frequency interference for vibration and acoustic measurement signals.
• Screw terminal design allows repeated wiring, troubleshooting and on-site maintenance.
• Standard front panel mounting supports fast assembly and replacement inside SCXI chassis.

Application Scenarios

• Automotive and aerospace vibration, noise and dynamic strain measurement test benches.
• Retrofit and spare replacement of legacy NI SCXI dynamic data acquisition platforms.
• Laboratory structural fatigue testing and mechanical equipment condition monitoring systems.
• University teaching experimental equipment and industrial process signal acquisition cabinets.
• Spare inventory for test system integrators, calibration laboratories and maintenance contractors.

• Global aftermarket spare supply for engineering teams maintaining discontinued NI DAQ hardware.