The two-channel 2182A is optimised for making stable, low noise voltage measurements and for characterising low-resistance materials reliably and repeatedly. It provides higher measurement speed and better noise performance than alternative low voltage measurement solutions. The ability to select from a wide range of response times facilitates optimising speed/noise trade-offs. Low noise levels are assured over a wide range of useful response times, typically 15nV p-p noise at 1s response time and 40-50nV p-p noise at 60ms.
Delta mode coordinates measurements with reversing current source up to 24Hz with 30nV p-p noise (typical) for one reading - averages multiple readings for greater noise reduction
Synchronisation to line provides 110dB NMRR and minimises effect of AC common-mode currents
Resistance measuring range 0Ω → 1MΩ
Temperature measuring range -200 → +1820°C
Dual channels support measuring voltage, temperature or ratio of unknown resistance to a reference resistor
Built-in thermocouple linearisation and cold junction compensation