The NI TB-2627 is a front-mounting terminal block designed to interface with NI PXI-2527 and PXIe-2527 multiplexer switch modules. It provides screw terminal connections for signal wiring in automated test and measurement applications, with direct integration to the front panel I/O connectors of compatible switch modules. The TB-2627 supports multiple multiplexer configurations—including 64×1 1-wire, 32×1 2-wire, 16×1 4-wire, and dual configurations—enabling flexible system setup. A built-in thermistor cold-junction sensor delivers thermocouple measurement accuracy of ±0.5 °C (15 °C to 35 °C) and ±1.0 °C (0 °C to 15 °C and 35 °C to 50 °C), with output spanning 0.2 V to 0.024 V across the 0 °C to 50 °C range.
Technical Specifications
Physical & Mechanical
• Form Factor: 3U, single-slot PXI/cPCI module, PXIe-compatible
• Dimensions: 21.6 cm × 2.0 cm × 13.0 cm (8.5 in. × 0.8 in. × 5.1 in.)
• Weight: 209 g (7.4 oz)
• Part Number: 779358-01
Electrical Characteristics
• Maximum Switching Voltage (channel-to-channel): 300 V
• Maximum Switching Voltage (channel-to-earth): 300 V, CAT I
• Cold-Junction Sensor Type: Thermistor
• Cold-Junction Sensor Output Range: 0.2 V to 0.024 V (0 °C to 50 °C)
• Cold-Junction Accuracy: ±0.5 °C (15 °C to 35 °C); ±1.0 °C (0 °C to 15 °C and 35 °C to 50 °C)
– Key Features
• Screw terminals for all multiplexer channels ensure secure, reliable connections
• Front-mounting design simplifies chassis installation and field maintenance
• Supports single and dual multiplexer configurations for diverse signal routing topologies
• Integrated thermistor cold-junction compensation for thermocouple applications
• CAT I measurement category rating for signal safety
– Compatibility & Integration
• Compatible Modules: NI PXI-2527, NI PXIe-2527
• Direct connection to front panel I/O connectors of switch modules
• Optional Accessory: NI HV6-BAN4 DMM cable (Part Number: 192795-0R2)
• Required Tools: Wire insulation stripper, 1/8 in. flathead screwdriver, wire cutter
