The NI 781042-20 is a 20-meter MXI-Express Gen 1 x4 fiber optic cable that connects a host computer interface to PXI or PXI Express chassis over extended distances. Operating at up to 1 GB/s bandwidth, this cable enables transparent MXI-Express links for single or multi-chassis system configurations. The fiber optic construction delivers critical electrical isolation between the PC and PXI chassis—essential in electrically noisy test environments.
Technical Specifications
• Cable Type: MXI-Express Gen 1 x4
• Cable Length: 20 meters
• Interface Width: x4
• Maximum MXI Bandwidth: 1 GB/s
• Connector Type: Fiber Optic
• Extended Reach: Up to 200 meters per link (fiber optic variants)
• Operating Temperature: 0 to 55 °C (IEC-60068-2-1, IEC-60068-2-2)
• Non-Operating Temperature: −20 to 70 °C (IEC-60068-2-1, IEC-60068-2-2)
• Relative Humidity: 10 to 90% noncondensing (IEC-60068-2-56)
• Polarity: Non-polarized connectors—connects in either orientation
– Key Features
• Electrical isolation between host PC and PXI chassis
• Supports star and daisy-chain topologies for multi-chassis systems
• Transparent MXI-Express communication
• PCI Express Specification Revision 1.0a or later compliance
– Typical Applications
• Remote control and data communication with PXI and PXI Express chassis
• Multi-chassis test systems requiring extended cable runs
• Electrically noisy industrial test environments
• Flexible single or multi-chassis configurations
– Compatibility & Integration
The 781042-20 works with PXI and CompactPCI (PICMG 2.0 R 3.0) 3U modules in compatible chassis. Compatible host interfaces include the NI PCIe-8375 and NI PXIe-8375, both compliant with PCI Express Specification. EU and UK Declarations of Conformity are available.
