31. For the next several seconds, the injector pulse width is wider than normal to provide sufficient fuel for starting. 32. Over the next several weeks, she adjusted the rate, amplitude and pulse width of the electrical signals the system emits. 33. The direct frequency synthesis allows a wide range of pulse repetition frequencies, pulse widths , and modulation schemes to be created. 34. Where D is the duty cycle, PW is the pulse width , and T is the total period of the signal. 35. A common method is to double the voltage, but halve the pulse width , delivering the same total amount of power. 36. Oscillator sync in combination with autobend ( on the slaved oscillator ) allows the DSS-1 to emulate pulse width modulation. 37. This led to a new 16-cm system with a peak power near 500 W and a pulse width of 6 ?s. 38. The sharpness of the echo is a function of the pulse width , so by reducing it the system became more accurate. 39. Sample 2 through sample N would be similar but delayed by one or more pulse widths behind those that are shown. 40. Modern radar systems are generally able to smoothly change their PRF, pulse width and carrier frequency, making identification much more difficult.