NI BNC-2090 Rack-Mounted BNC Terminal Block

The NI BNC-2090 is a rack-mounted BNC terminal block that interfaces with National Instruments E Series and M Series DAQ devices. It centralizes signal connectivity for analog input, analog output, digital I/O, and timing signals, eliminating wiring complexity and reducing the risk of accidental disconnections. The shielded chassis houses 22 BNC connectors and 28 spring terminal blocks, delivering organized signal management across laboratory and industrial measurement systems.

– Technical Specifications

Connector Configuration
• 16 analog input (AI) BNC connectors — supports eight differential or sixteen single-ended channels
• 2 analog output (AO) BNC connectors
• 2 customizable BNC connectors (USER 1, USER 2)
• 1 analog programmable function input (APFI) BNC connector
• 1 programmable function input (PFI) BNC connector
• 28 spring terminal blocks for digital I/O and PFI connections — supports up to 8 digital I/Os
• Two 68-pin I/O connectors for DAQ device interfacing

Electrical Characteristics
• Maximum input voltage: 42.4 Vpk / 60 VDC
• Typical power consumption: 10 mA (passive configuration)
• Maximum power consumption: 1 A (fuse-limited by host DAQ board)
• Power supplied via 68-pin I/O connector

Physical & Environmental
• Dimensions: 1.73 × 19 × 3.82 inches (4.4 cm × 48.3 cm × 9.7 cm)
• Weight: approximately 2 lbs (0.91 kg)
• Operating temperature: 0 °C to 70 °C
• Storage temperature: -55 °C to 125 °C
• Relative humidity: 5% to 90% non-condensing

– Key Features

Signal-labeled BNC connectors enable intuitive channel identification without external documentation. Open component positions on the PCB accommodate passive signal conditioning — low-pass filters, high-pass filters, and voltage dividers — directly on the terminal block. The shielded enclosure minimizes EMI coupling. Adhesive rubber feet support desktop deployment; standard 19-inch rack mounting hardware is included.

– Compatibility & Integration

Designed exclusively for National Instruments E Series and M Series DAQ devices. Direct 68-pin connector mating eliminates intermediate cabling. Spring terminal blocks and BNC connectors accept wire gauges suitable for standard laboratory instrumentation.