The GenRad 509-R is a precision decade resistor designed for calibration and testing in standards laboratories and production environments. Part of General Radio’s legacy product line, it delivers the high accuracy and stability required for demanding measurement work. The 509-R is now manufactured, serviced, and supported by IET Labs, ensuring continued availability of this proven standard.
## Technical Specifications
The 509-R is classified as a precision decade resistor and represents one model within a series of precision electrical standards that includes the 509-T, 509-U, 509-X, and 509-Y variants. GenRad’s comparable decade resistor offerings deliver 0.01% accuracy and maintain high long-term stability—critical characteristics for any standards-grade instrument.
## Key Features
• Precision decade resistor construction for accuracy-critical applications
• High stability suitable for extended use without recalibration cycles
• Part of a coordinated series enabling flexible measurement configurations
• Integrated into the broader GenRad test and measurement ecosystem
## Typical Applications
The 509-R serves calibration laboratories, production test environments, and metrology facilities where resistance standards of known accuracy are essential. Common uses include verifying test equipment performance, establishing reference points for production testing, and supporting precision measurement protocols in standards laboratories.
## Compatibility & Integration
As a GenRad instrument, the 509-R integrates directly with other precision electrical standards and test equipment from the same manufacturer family. Its design reflects decades of General Radio engineering practice in precision measurement instrumentation. Ongoing support through IET Labs preserves the operational integrity and traceability of installed units.
