Tektronix SD22 Low Noise Sampling Head The Tektronics SD22 is a Low Noise 12.5GHz Dual Channel Sampling Head. The Tek SD22 Sampling Head is specfically designed for low noise measurement in digital communications and devise characterization applications. Some features of the Tektronix Low Noise SD22 Sampling Head are: Low-noise Dual-channel Acquisition Rise Time of 28 ps Bandwidth of 12.5 GHz 450 uV rms of display noise noise levels are 180 uV rms Copyright 2006 Trek Equipment Corporation - 1 888-873-5374