NI CB-50 Input / Output Connector Block and 1-Meter Cable Kit

The NI CB-50 is an Input/Output Connector Block and 1-meter Cable Kit that bridges field signals to National Instruments data acquisition devices. The kit provides 50 screw terminals for direct wiring of external I/O signals and includes a 1-meter keyed ribbon cable with a single 50-pin header for DAQ board connection. Tool-free removal via ejector ears enables quick reconfiguration in the field.

– Technical Specifications

• Screw Terminals: 50
• Ribbon Cable Length: 1 meter (also available in 0.5 m and cable-free variants)
• Connector Header: One 50-pin
• Connector Block Dimensions: 5.22 × 2.83 inches
• Cable Interface: Keyed ribbon connector for aligned mating with DAQ headers
• Mounting Bracket Hardware: Included for DIN rail, flush-mount, and rack-mount configurations
• Base Protection: Plastic protective base

– Key Features

• Keyed connectors prevent incorrect insertion and signal routing errors that could damage connected equipment
• Multiple mounting options—DIN rail, panel flush-mount, and desktop placement—accommodate varied laboratory and field installations
• Tool-free connector block removal via ejector ear pressure simplifies field reconfiguration without additional instruments
• Single 50-pin header supports direct connection to compatible NI DAQ cables

– Typical Applications

Data acquisition signal conditioning and field I/O routing to NI 50-pin DAQ systems. Commonly deployed in test stands, instrumentation racks, and distributed measurement networks where screw-terminal signal breakout is required.

– Compatibility & Integration

Designed for NI 50-pin data acquisition devices, including NI 650x and NI 6527 families. Backward compatible with legacy National Instruments boards: NB-MIO-16, NB-DIO-24, NB-TIO-10, MC-DIO-32F, MC-MIO-16, and related heritage platforms. Specific pinout assignments are documented in the user manual for each respective DAQ board.

NI Part Numbers:
• CB-50 with 1 m cable: 776164-02
• CB-50 with 0.5 m cable: 776164-01
• CB-50 without cable: 776164-90