The PRS-370 will make you rethink, the decade resistor

• Resistance range: 0.1 Ω to 20 MΩ with a Resolution of 1 μΩ or 6 digits
• Precision lab grade resistance standard with accuracy when used in DMM mode or
• Self-adjusting resistance standard when used with a 8.5 DMM (Fluke 8508A, 8588A or Keysight 3458A)
• Large color touchscreen and intuitive interface promotes little to no training
• Can be used as both a Manual or an Programmable unit in both lab and production environments.
• Sold with an industry leading 5 year warranty and Manufactured in the USA

• Virtually no maintenance cost , built-in firmware routine allows for the automatic calibration and adjustment of the unit so if it goes out of spec it automatically brings itself back in less than 30 minutes
• Rated for use at 0.5 W, for higher power consider the PRS-202
• Use for RTD applications is straightforward with built-in PT-100 and PT-1000 Tables, RTD values can be input in both °C, °F
• No zero or switch resistance 0.1 Ω is 0.1 Ω
• Front and rear binding posts for ease of connection
• Strong ac perfomance
• GPIB IEEE 488.2 Interface -LabView drivers w/full scpi commands provided
• If you require USB or Ethernet Interface, or do not own an 8.5 Digit DMM consider the PRS-330
• U.S. Patent 10,191,084

PRS-370 patented advantages over traditional decades:

• Self-adjusting improves accuracy to better than 10 ppm replacing individual resistance standards
• Always have the rights resistance standard to calibrate new instruments
• Single button press adjustment, of the internal resistors, saves time of manual trimming or manually entering resistor calibration values

Overview
The PRS-370 is a Self-Adjusting Programmable Resistance Substituter, just connect an 8.5 digit DMM; Fluke 8508A, 8588A or the Keysight 3458A to the PRS-370 via the IEEE-488 interface, and the PRS-370 becomes a short-term stable variable standard of resistance.

The PRS-370 instructs the DMM to make a measurement of the source resistance and then automatically fine adjusts the output resistance to achieve the "best" accuracy to the nominal resistance value, typically better than 10 ppm.

The PRS-370 utilizes both the front and rear binding posts so that the DUT and DMM can be connected at the same time. Once the resistance measurement is complete using the DMM and rear binding posts, the source resistance is switched to the front binding posts.

The large graphical color display shows the target resistance, ? from nominal, measured resistance from the DMM and measurement uncertainty of the DMM.