The Type 1310-A Oscillator is a general-purpose signal source for laboratory or production use. It features wide frequency range; high output; low distortion, hum, and noise; high stability and accuracy; plus a synchronizing feature which allows such varied uses as filtering, leveling, frequency multiplying, jitter reducing, and slaving. • 1.2 DESCRIPTION A capacitance-tuned, RC Wien-bridge oscillator drives a low-distortion output amplifier, which isolates the oscillator from the load and delivers a constant voltage behind 600 ohms. A jack is provided for introduction of a synchronizing signal for phase-locking or to furnish a signal, independent of the output attenuator setting, to operate a counter or to synchronize an oscilloscope or another oscillator.