SHC68-68-EPM National Instruments 68-EPM Shielded Cable

Description

SHC68-68-EPM National Instruments 68-EPM Shielded Cable

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Product Description

The NI SHC68-68-EPM is a shielded cable designed for connecting various NI data acquisition (DAQ) and switch devices to their respective terminal blocks or accessories. The cable features a 68-pin VHDCI connector on one end and a 68-pin male D-Sub connector on the other. It is specifically engineered to ensure high-quality signal transmission and to minimize noise interference in measurement systems. The “EPM” designation often refers to its optimized design for applications requiring superior signal integrity.

Product Specifications

• Connector 1: 68-pin VHDCI (Very High-Density Connector Interface)
• Connector 2: 68-pin Male D-Sub
• Cable Type: Shielded, twisted-pair
• Length: Available in various lengths (e.g., 1 m, 2 m), with the part number typically indicating the length.
• Compatibility: Designed for use with numerous NI 68-pin DAQ devices (E Series, M Series, X Series) and certain switch modules.
• Pinout: Straight-through wiring, meaning pin 1 on one connector maps to pin 1 on the other.

Product Advantages

The SHC68-68-EPM cable is a crucial component for building a reliable measurement system, offering several key advantages:

• Superior Noise Immunity: The combination of shielding and twisted-pair wiring is highly effective at rejecting electromagnetic interference (EMI) and crosstalk. This is essential for low-voltage signal measurements where noise can significantly degrade accuracy.
• High-Quality Construction: NI cables are built to a high standard, ensuring durability and a secure connection. The connectors are robust and designed for repeated use, which is critical in lab and test environments.
• Guaranteed Compatibility: By using a genuine NI cable, you ensure proper connectivity and pinout. This eliminates potential wiring errors and compatibility issues that can arise with third-party cables.
• Simplified Integration: The cable provides a clean, single-cable solution for connecting your DAQ device to a terminal block, reducing cable clutter and simplifying system setup.

Applications

The SHC68-68-EPM cable is used in any application where a 68-pin VHDCI DAQ device needs to be connected to a compatible terminal block. Common applications include:

• Data Acquisition Systems: Connecting a DAQ card (e.g., PCI-6221, PXI-6251) to a screw terminal block (e.g., SCB-68) for sensor and signal wiring.
• Industrial Automation: Interfacing with a DAQ system to connect to field signals from sensors and actuators.
• Automated Test Equipment (ATE): Providing a reliable connection between a PXI or PCI DAQ module and a breakout box for testing electronic components.
• Research and Education: Building reliable data acquisition setups in a lab environment.

Important Considerations

For optimal performance and reliable operation, keep these points in mind when using the SHC68-68-EPM:

• Correct Connector Type: Ensure your NI device has a 68-pin VHDCI connector and your terminal block or accessory has a 68-pin D-Sub connector. Using the wrong cable will not work.
• Cable Length: Choose a cable length that is appropriate for your setup. Using a longer cable than necessary can increase the risk of noise pickup, while a cable that is too short can create strain on the connectors.
• Terminal Block Compatibility: The cable is a connectivity accessory, not a standalone solution. It must be paired with a compatible terminal block or accessory to complete the connection to your sensors or signals.
• Proper Handling: Avoid bending or kinking the cable, as this can damage the internal wiring and compromise the shielding, which will degrade signal quality.

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