The NI SCXI-1317 is a front-mounting terminal block that interfaces quarter-bridge strain gauges with National Instruments SCXI-1521 and SCXI-1521B input modules. This 24-channel accessory provides screw terminal connectivity with shielded construction to minimize noise and ensure signal integrity in precision strain measurement systems. The terminal block is software autodetectable and supports both 2- and 3-wire strain gauge configurations, making it suitable for static testing, fatigue analysis, and general structural measurement applications.
– Technical Specifications
• Channels: 24
• Terminal Type: Screw terminals (3 per channel: Excitation+, Analog In, Quarter-Bridge)
• Compatibility: SCXI-1521 (350 Ω completion resistors), SCXI-1521B (120 Ω completion resistors)
• Wire Stripping Length: Maximum 7 mm (0.28 in.)
• Terminal Torque: 0.57 to 0.79 N·m (5 to 7 lb·in.)
• Dimensions: 15.0 cm × 7.9 cm × 3.1 cm (5.9 in. × 3.1 in. × 1.2 in.)
• Excitation Voltage Range: 0 to 5 V (programmable over 1024 levels via associated SCXI-1521/B modules)
– Key Features
• Shielded construction for signal integrity and reduced noise interference
• Three screw terminals per quarter-bridge channel for flexible wiring
• Shield connection to GND for shielded transducer applications
• Software autodetection for simplified system integration
• Support for 2- or 3-wire strain gauge topologies
– Electrical Characteristics
The terminal block functions as an accessory to SCXI-1521/B modules, which provide programmable excitation, 10 Hz 2-pole Butterworth low-pass filtering per channel, null compensation for bridge offset voltage, and programmable shunt calibration resistors for error compensation.
– Compatibility & Integration
Front-mounting design enables quick access and integration within SCXI chassis. Compatible exclusively with SCXI-1521 and SCXI-1521B quarter-bridge strain gage modules.
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