Type Input entry Output Data Range Interval Period Range Output voltage Impedance Frequency Range Power Supply | : : : : : : : : : : | Portable Programmable Pulse, Saw, Rev saw, Triangle, and Sine Programmable 5 - 250 Sec 5 - 250 Sec Max 2.5V, Programmable 50 Ohm 0.02s - 50 Hz Internal Baery 9V - 12V |