NI SHC68-68-EPM

Description

Detailed Parameter Table

NI SHC68-68-EPM

Product introduction

The National Instruments SHC68 – 68 – EPM is a high – performance, shielded multifunction cable meticulously engineered to meet the connectivity demands of modern industrial and data acquisition systems. This cable serves as a crucial link, facilitating seamless communication between a wide array of devices.

With a 68 – pin male VHDCI connector at the back – end and a 68 – pin female D – sub connector at the front – end, the SHC68 – 68 – EPM is designed to interface with M series devices, X series devices, select S series devices, and DAQ cards. Its construction includes both individually shielded analog input pairs and digital twisted pairs, which are optimized for different types of signal transmissions. The cable comes in multiple length options, ranging from 0.5 m to 10 m, allowing for flexibility in various installation scenarios. In data acquisition setups, it plays a pivotal role in ensuring that analog and digital signals are accurately transmitted from sensors and other input sources to the DAQ devices, enabling precise data collection and analysis.

Core advantages and technical highlights

Superior Signal Integrity: The SHC68 – 68 – EPM is designed with individually shielded analog input pairs and digital twisted pairs. The individually shielded analog input pairs, with a differential impedance of 66 ohms @ TDR and a mutual capacitance of 23.0 pF/ft nominal, are ideal for carrying sensitive analog signals. For example, in a chemical plant where precise temperature and pressure sensor readings are crucial, these analog input pairs can accurately transmit the signals from the sensors to the DAQ device, minimizing interference. The digital twisted pairs, having a differential impedance of 107 ohms @ TDR, ensure reliable digital signal transmission, which is vital for applications like automated manufacturing lines where digital control signals need to be sent without error.

Enhanced Noise Reduction: Thanks to its shielded construction, the SHC68 – 68 – EPM is highly effective in reducing electromagnetic interference (EMI). In industrial environments filled with motors, generators, and other electrical equipment that generate EMI, this cable can maintain the integrity of the signals it transmits. For instance, in a power generation facility, the cable can withstand the harsh electromagnetic environment and ensure that the data from various sensors monitoring the power generation process is accurately transmitted to the control system, preventing signal corruption that could lead to incorrect operations.

Flexible Length Options: Available in lengths of 0.5 m, 1 m, 2 m, 5 m, and 10 m, the SHC68 – 68 – EPM offers great flexibility in system installation. Whether it’s a compact laboratory setup where a short cable is sufficient to connect a DAQ device to a few sensors or a large – scale industrial plant where longer cables are needed to reach sensors distributed across a wide area, there is a suitable length option. This flexibility eliminates the need for complex and potentially signal – degrading cable extensions, ensuring optimal performance.

Typical application scenarios

Industrial Automation: In industrial automation, the SHC68 – 68 – EPM is extensively used to connect sensors and actuators to DAQ systems. For example, in an automotive assembly line, various sensors such as proximity sensors, pressure sensors, and temperature sensors are used to monitor the manufacturing process. The SHC68 – 68 – EPM can connect these sensors to the DAQ device, allowing the control system to receive accurate data. It can also be used to transmit control signals from the DAQ device to actuators, like robotic arms, ensuring smooth and precise operation of the assembly line.

Data Acquisition in Research Laboratories: In research laboratories, accurate data acquisition is crucial. The SHC68 – 68 – EPM can be used to connect experimental equipment to DAQ cards. For instance, in a physics experiment where high – precision voltage and current measurements are required, the cable’s individually shielded analog input pairs can accurately transmit the signals from the measuring instruments to the DAQ device. This ensures that the researchers obtain reliable data for their experiments, facilitating in – depth analysis and the development of new theories.

Environmental Monitoring: In environmental monitoring stations, a variety of sensors are used to measure parameters such as air quality, water quality, and weather conditions. The SHC68 – 68 – EPM can connect these sensors to the data acquisition system. For example, it can transmit the digital signals from a particulate matter sensor (which uses digital output) and the analog signals from a dissolved oxygen sensor in a water body to the DAQ device. This enables continuous and accurate monitoring of the environment, helping in environmental impact assessment and the implementation of appropriate conservation measures.

Related model recommendations

SH 68 – 68 – EP: A previous – generation high – performance noise – reduction cable. It has a similar function to the SHC68 – 68 – EPM but lacks some of the enhanced shielding and specific pairings of the latter. It can be used as a substitute in compatible devices where the performance requirements are not as stringent.

R68 – 68: An unshielded multifunction ribbon cable. It is a cost – effective option compared to the SHC68 – 68 – EPM but does not offer the same level of noise reduction and signal integrity. It is suitable for applications where the environment has low electromagnetic interference and cost is a major concern.

NI USB – 62XX: These are DAQ devices (formerly M series) that are often connected using the SHC68 – 68 – EPM cable. They work in tandem, with the cable facilitating the transfer of data between the devices and various sensors or accessories.

NI 61XX: Formerly S series DAQ devices. Selected models of these devices are compatible with the SHC68 – 68 – EPM cable. The cable enables the connection of these devices to external components for data acquisition and control.

NI 60XX/60XXE: Formerly B series and E series DAQ devices. The SHC68 – 68 – EPM can be used to connect these devices to relevant accessories, allowing for the implementation of data acquisition and control functions in different applications.

Installation, commissioning and maintenance instructions

Installation Preparation: Before installing the SHC68 – 68 – EPM cable, ensure that the devices it will connect, such as DAQ cards and sensors, are powered off. Use appropriate anti – static measures, like wearing an anti – static wristband, to prevent electrostatic discharge that could damage the sensitive connectors. Check the cable for any visible signs of damage, such as cuts or frayed wires. When connecting the cable, carefully align the 68 – pin male VHDCI and 68 – pin female D – sub connectors with their respective ports on the devices. Ensure a firm and proper connection to avoid loose contacts that could lead to signal loss.

Maintenance Suggestions: Regularly inspect the SHC68 – 68 – EPM cable for any signs of wear, especially at the connector ends. If there is dirt or debris on the connectors, use a clean, dry cloth to gently wipe them. In case of signal transmission issues, first check the cable connections to ensure they are secure. If the problem persists, test the cable using a cable tester to check for any internal breaks or impedance mismatches. If a damaged cable is detected, replace it with a new SHC68 – 68 – EPM cable of the appropriate length. Avoid bending the cable at sharp angles, as this can damage the internal conductors and affect signal quality.

Service and guarantee commitment

National Instruments stands firmly behind the quality of the SHC68 – 68 – EPM cable. It comes with a standard warranty that covers any defects in materials and workmanship. This warranty period provides customers with peace of mind, knowing that if the cable fails due to manufacturing issues, NI will repair or replace it. NI also offers comprehensive technical support. Their team of experts is available to assist customers with installation queries, troubleshooting connection problems, and providing advice on optimal cable usage. In addition, NI provides online resources such as user manuals and application notes to help customers make the most of the SHC68 – 68 – EPM cable. This commitment to quality and customer support reflects NI’s dedication to ensuring that customers have a seamless experience when using their products.