The Valhalla Scientific 2500 AC/DC Current Calibrator is a
widerange voltage-to-current converter. This instrument will convert a precise input voltage to a proportional
output current. If the input voltage is DC, the output current will have the polarity of the input voltage.
If the input voltage is AC, the output current will have the frequency, amplitude and phase characteristics
of the applied input voltage. The 2500 provides seven current ranges from 1 microampere to 1 ampere which are
selectable from the front-panel range switch. The legends above each push-button indicate the current produced
at the output terminals when one (1.0000) volt is applied to the input terminals.