Alpha ADR Series Decade Standard Resistor (Digital Type)
The ADR Digital Type equipped with a CPU is easy to set a desired resistance value either by hand in local mode or by personal computer in remote mode. The ADR Digital Type originally holds data memory such as specific ohmic values corresponding to temperatures in Pt100 resistance thermometer so that data inputting jobs can be eliminated, resulting in time saving for measuring operation.
It is constructed with ultraprecision metal foil resistors which are manufactured by Alpha Electronics Corp. and which have been established as the best precision resistive component in the world market for the very low temperature coefficient and the excellent long-term stability of resistance. In order to keep itself from environmental noise, it is properly enclosed double electrical shielding.
Features
Remote mode of operation using GP-IB or RS-232C connection
Accuracy < 0.005% +2m? in six and half a digit readings
Temperature coefficient of resistance < 5ppm/C
Long-term stability in resistance < 50ppm/year
Low thermal EMF terminal
Double electrical shielding protection against noise
Quick response capable of setting desired resistance in as fast as 100ms
Interface specification open to users