The Krohn-Hite Model 5100A Function Generator provides sine, square, triangle, positive ramp and negative ramp functions over the frequency range of O.OOZ Hz to 3 MHz. An auxiliary fixed amplitude square wave is provided, independent of the other functions, for synchronous gating, blanking, etc. Control of symmetry is provided for all functions, and allows for pulse or sawtooth operation. The maximum output amplitude is 20 volts p-p open circuit or 10 volts across 50 ohms. The output attenuator has a range of 40 dB, and has a vernier capable of an additional attenuation of 30 dB. Externally generated signals may be used to synchronize the frequency of the generator, to F-M the generator output about a center frequency, or to sweep the generator frequency over a range of at least 1000:1. The output signal may be offset by up to ±5 volts open circuit by means of a front panel control.