Welcome our new addition of HP 34420A

Besides the crown jewel of HP 3458A 8.5 digits multimeter, HP 34420A is another top of the line metrology equipment every calibration lab cherish. Boosting a whooping 100nV resolution at finest voltage range, the 7.5 digital Nano Volt/Micro Ohm meter is yet another iconic instrument. 

It is noteworthy that 34420A input front end circuitry is proudly being discussed in The Art of Electronics 3rd Edition as an illustration of precision circuit technique. 

Unlike traditional DVM with binding posts like on 3458A, the 34420A comes with pure copper 1S LEMO plug for minimizing thermal EMF influence for highest measurement accuracy in electronical meteorology. 

SpecialtyCircuits acquired this 34420A nanovolt meter as part of the development of our Economical Voltage/Resistance Calibrator (to be announced). The Calibrator will also feature the same LEMO 1S series as the output connector.