The National Instruments RMX-4000 is a versatile mainframe designed for DC electronic load device modules, providing exceptional flexibility and performance. It accommodates up to two load modules within its compact structure and supports multiple communication interfaces, including USB, LAN, and RS-232C. As part of the RMX-400x series, the RMX-4000 offers four operational modes: constant resistance (CR), constant power (CP), constant voltage (CV, CV+CC), and constant current, enabling diverse testing and measurement applications.

The RMX-4000 showcases high performance with a maximum resolution of up to 5 digits and fast response capabilities due to its high slew rate. The mainframe's architecture facilitates independent operation through multiple isolated channels, enhancing its versatility in demanding environments. With the ability to link additional frames, the RMX-4000 supports scalable operations and modular flexibility by allowing the integration of various load modules within the same unit. It features a color LCD for clear data visualization and is well-suited for programmable sequences, offering up to 120 different sets. Although the RMX-4000 has been announced as obsolete, it remains available for purchase and repairs through Apex Waves, ensuring continued support for users. A user manual and maintenance manual for the RMX-4000 can be downloaded for operational assistance. For pricing inquiries, please contact a sales representative directly.