The resistance measurement range of AC resistance bridge covers from 2 mΩ to 63.2 MΩ, and the resistance measurement resolution is as high as 30 nΩ (typical value), making it widely used in electrical measurements such as superconducting transition and Hall effect. At the same time, three independent measurement channels and up to 16 extended measurement channels can meet the synchronous measurement requirements of multiple samples. AC resistance bridge is an ideal instrument for electrical transport measurement. Furthermore, The three independent output channels (Warm-up, Sample, Still) designed specifically for their respective application scenarios, heater short circuit & open circuit protection, Zone mode, relay and analog output functions, etc., make AC resistance bridge is capable of meeting the temperature control requirements of the vast majority of low-temperature systems.

Product features：

- 3 independent measurement channels with consistent parameter indicators, among which Input A can be expanded to 16 measurement channels through an external scanning module;
- The resistance measurement range is from 2 mΩ to 63.2 MΩ, and the resistance measurement resolution is 30 nΩ (RMS, typical value);
- The resistance measurement employs digital phase-locked technology, and the excitation current supports a total of 22 Settings ranging from 1 pA to 31.6mA;
- Extremely low sensor self-heating control, with temperature measurement and control as low as 10 mK;
- The maximum output power of the warming output is 50 W, and it supports short circuit and open circuit detection of the heater;
- The maximum output power of the Sample and Still is 1W;
- Supports zonal PID temperature control (Zone mode);
- Built-in sliding window digital filter, supporting filter parameter Settings;
- Supports up to 1,000 user-defined indexing tables;
- Supports 2-channel relay and 1-channel analog signal output;
- Supports USB(serial port), network port and GPIB communication methods.

Technical parameters：