National Instruments RTSI Bus Cables RTSI ribbon cable family

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National Instruments · NI plug-in boards with RTSI connectors

RTSI Bus Cables

Name: RTSI Bus Cables
Brand: National Instruments

NI RTSI Bus Cables link adjacent RTSI-equipped plug-in boards for system timing and synchronization. This catalog record covers a cable family; the required variant depends on board count and connector placement.

ManufacturerNational Instruments

ModelRTSI Bus Cables

Part Number776249-02 · 776249-03

Product TypeRTSI ribbon cable family

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30-Day Returnspolicy applies

Technical Supportmodel & compatibility help

Interface34-pin female RTSI

Standard configurations2, 3, 4, or 5 board connections

Extended configurationFive-board cable for mixed long and short boards

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Overview

Product overview

Key product information and technical features.

RTSI stands for Real-Time System Integration. It allows supported NI boards to exchange timing and control signals for synchronization.

For installations mixing long and short boards, NI's installation guide specifies the extended five-board cable. Group boards with similar RTSI connector positions together and use the cable's single long center section between the adjacent short and long boards.

Ribbon construction connects RTSI headers on adjacent NI plug-in boards.
Standard variants support two through five PCI or AT/ISA devices.
Extended five-board routing accommodates different board lengths and connector positions.

Verified specifications

Technical data

Verified product specifications.

Connector type	34-pin female RTSI at front and back ends
776249-02 configuration	2 ribbon connections; 44.5 mm length
776249-03 configuration	3 ribbon connections; 89 mm length
776249-04 configuration	4 ribbon connections; 133.5 mm length
776249-05 configuration	5 ribbon connections; 178 mm length
777562-05 configuration	Extended length; 5 ribbon connections; 311 mm length

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Compatibility

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National Instruments

Manufacturer

RTSI bus

Inter-board timing and control interface

RTSI Bus Cables

Physical connection between adjacent board RTSI connectors

Extended cable layout

Only one long cable section is provided; group boards by connector position.

Confirm each board's RTSI support and connector placement before selecting the cable variant.

Manuals & software

Technical resources

Manuals, software and technical resources for this model.

RTSI Cable — Product Details and Variant ComparisonOfficial Product Page · ni.com

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RTSI Bus Cable Installation GuideInstallation Guide · download.ni.com

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Real-Time System Integration (RTSI) and Configuration ExplainedTechnical Support Article · ni.com

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RTSI Cable Product CertificationsTechnical resource

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FAQ

Product-specific questions

Product-specific answers based on available technical information.

What does an RTSI cable do?

It links supported boards so they can share timing and control signals for synchronization.

When is the extended five-board cable needed?

NI specifies the extended cable for connecting a mixture of long and short boards. Its long center section bridges the differing connector positions.

Does connecting the cable complete NI-DAQmx configuration?

No. For the NI-DAQmx workflow described by NI, register the physical RTSI cable in Measurement & Automation Explorer (NI MAX) after connecting the devices.