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The 1200A provides sine, square and triangle waveforms from 0.2Hz to 3MHz. The frequency may be manually tuned, continuously swept up or down, or externally controlled, all over a 1500:1 range on each of the three multiplier bands. An additional fine-tune vernier provides an adjustment of ±2.5% of the frequency dial setting. Internal sweep rate is continuously adjustable from 1ms to 1000s. An external voltage of zero to ±3 volts can be used to modulate the frequency about the dial setting. A CV (control voltage) output provides a +2mV to 3V DC voltage proportional to the generator frequency.