The NI 9923 is a 37-pin D-SUB to screw-terminal adapter block that bridges female D-SUB connectors to individual screw terminals, enabling direct wiring of sensors and actuators to NI C Series modules and Compact FieldPoint devices. This terminal block eliminates the need for custom cable assemblies by providing accessible screw-terminal connection points for each signal line, streamlining integration in laboratory and industrial data acquisition systems.
Technical Specifications
Electrical Performance
• Maximum voltage: 60 VDC, 30 Vrms, 42 Vpk
• Current capacity varies by temperature and pin group:
– General pins at −40 °C to 55 °C: ≤5 A
– General pins at 56 °C to 70 °C: ≤4 A
– Pins 1–8, 11–18, 20–27, 30–37 at −40 °C to 55 °C: ≤1 A per channel
– Pins 1–8, 11–18, 20–27, 30–37 at 56 °C to 70 °C: ≤1 A per channel, ≤16 A aggregate
• Operating temperature range: −40 °C to 70 °C
• Weight: approximately 0.45 kg
Connector & Interface
• Front-end: 37-pin female screw terminals
• Back-end: 37-pin female D-SUB
• Part number: 781503-01
– Key Features
• Captive screws secure the cover for permanent installation
Jackscrews provide firm connectivity in high-vibration environments
• Integrated strain relief holes optimize cable positioning and mechanical support
– Typical Applications
Custom signal conditioning and routing for NI C Series data acquisition modules; sensor and actuator termination in field installations; signal distribution in mixed-signal measurement systems.
– Compatibility & Integration
Fully compatible with NI C Series modules featuring 37-pin D-SUB connectors and all NI Compact FieldPoint devices. Supports standard industrial and laboratory signal acquisition workflows.
