NI 776249-02 RTSI Bus Cable with 2 Connectors

The NI 776249-02 RTSI Bus Cable is a 34-conductor ribbon cable with two 34-pin female connectors designed to synchronize timing and control signals between adjacent National Instruments plug-in boards. Real-Time System Integration (RTSI) enables precise signal sharing across multiple cards in PCI and AT Series systems. The cable measures 44.5 mm (1.75 inches) in length and connects RTSI bus connectors on adjacent NI plug-in cards within a single chassis.

– Technical Specifications

• Part Number: 776249-02
• Manufacturer: National Instruments
• Connector Type: 34-pin female RTSI (both ends)
• Cable Length: 44.5 mm (1.75 inches)
• Conductor Count: 34 conductors
• Cable Type: Ribbon cable, uncoated
• Weight: 0.3 kg
• Number of Connectors: 2

– Key Features

• Dual 34-pin female RTSI connectors enable direct board-to-board interconnection
• Ribbon construction supports high-speed timing and control signal distribution
• Compact 44.5 mm length optimized for adjacent expansion slot mounting
• Uncoated design for direct connector engagement without protective barriers

– Typical Applications

• Advanced control systems requiring deterministic inter-board synchronization
• Multi-card data acquisition setups with synchronized sampling across channels
• Real-time test and measurement systems demanding sub-microsecond timing alignment
• Mixed-signal applications where timing coherence across multiple boards is critical

– Compatibility & Integration

Designed exclusively for National Instruments PCI and AT Series boards equipped with RTSI connectors. Installation requires powering down the host system and connecting the cable between RTSI connectors on adjacent plug-in cards. Software configuration via NI Measurement & Automation Explorer (MAX) registers the RTSI cable and associates connected boards. NI-DAQmx driver automatically routes signals through the RTSI bus for synchronized operation, or manual routing is supported via DAQmxExportSignal functions. Optimal connectivity occurs when boards with similar connector positions occupy adjacent slots. Not all DAQ devices support RTSI connectivity; incompatible devices will not appear in configuration lists.