The National Instruments CAL-4300B is a precision calibration accessory designed specifically to enhance the performance and accuracy of the TB-4300B terminal block, ensuring compliance with National Instruments specifications. This robust accessory facilitates efficient calibration and verification procedures by providing the necessary wiring connections to the TB-4300B, enabling rapid implementation while ensuring precise electrical measurements and adjustments. Engineered for stable and reliable interfacing, the CAL-4300B is essential for engineers and technicians aiming to confirm the terminal block's performance and safety standards.

The CAL-4300B is compatible with the Fluke 5700A precision calibrator and digital multimeters such as the NI 4070, as well as other similar 6½ digit multiranging DMMs. It operates effectively in controlled electrical environments, with stringent management over temperature and humidity conditions. This accessory delivers accurate voltage attenuation ratio measurements crucial for maintaining the integrity of the TB-4300B in various data acquisition and control applications. Manufactured to stringent quality standards, the CAL-4300B serves as a reliable solution in laboratories, production facilities, and field settings where precision calibration is essential.

Key specifications include a part number of 781852-01, support for input voltages of up to 60 V, and a 1:30 attenuation ratio. The recommended calibration interval is every five years, and it features a secure alignment mechanism for optimal connection. The operating environmental range is specified at 20 °C to 30 °C with a relative humidity of less than 80%. This durable accessory is vital for high-accuracy calibration in test and measurement, as well as for supporting industrial automation and control systems.