The 746A AC Standard/Amplifier is a calibrated AC source with continuously adjustable frequency output from 10Hz to 110kHz. Designed and well suited for laboratory applications, output voltage can be varied from 0.1 mV to 1099.999 volts in steps as small as 1 ppm. Basic accuracies for the 1 mV to 100 V range are as follows: ?0.02% (50Hz-20kHz); ?0.5% (20-50Hz, 20-110kHz); ?0.2% (10-20Hz). Accuracy is reduced slightly on the 1000 V range.