National Instruments 777687-49 Shielded Cable Assembly

The part number 777687-49 from National Instruments is the identifying part number for the SCXI-1349 shielded cable assembly. This cable is designed to connect 68-pin E Series devices to the SCXI chassis except the DAQCards. The wire is designed to ensure reliable communication between the SCXI series modules to help keep the signal integrity and also help with high-speed data acquisition without affecting the communication quality. 

This shielded cable assembly includes a SH68-68-EP shielded cable and a cable adapter with a 50-pin male breakout connector. The shielded cable uses the twisted pair wiring configuration and separately shielded analog and digital signals, which helps with maximum noise rejection allowing the wire to transfer signals over long distances by keeping the integrity of the signal. The 777687-49 is attached to the rear slot of the SCXI chassis which is a strategic position as it is easy to access and helps provide a stable and durable connection. The 50-pin male breakout connector allows for convenient attachment of DAQ accessories such as the SCXI-1180 feedthrough panel or a CB-50 terminal block.

For SCXI systems operating in multiplexed mode, only one SCXI cable assembly per chassis is required. However, when using multi-chassis setups, it is necessary to use additional adapters and cables, depending on the specific configuration and modules in use. The 777687-49 allows for easy integration with legacy and modern data acquisition cards while supporting both latching and non-latching connectors with appropriate cable selections.

The 777687-49 shielded cable assembly is available in different lengths of 1 meter to 2 meters configuration allowing users to select the right length for their applications. This shielded cable is designed for normal industrial setups and should not be used in areas with high toxicity levels as it may affect the insulation of the wire causing it to burn or melt. Make sure to wrap the wire in loops when not in use to avoid causing breaks under the insulation which may end up affecting the data communication speeds and the quality of data transfer which might end up slowing the communication process.