The GDS-1000B series features three bandwidth selections ─ 50MHz, 70MHz, 100MHz and equips with analog signal input terminals by four or two channels (50MHz only equipped 4-channels input ). The maximum sampling rate for each single channel is 1GSa/s. The memory depth is 10Mpts per channel independently. The waveform update rate is 50,000wfms/s, which helps users to precisely observe the detailed waveform variation. Additionally, 7” WVGA color LCD display and the 256 color gradient display function together allow waveforms to be observed with the senses of transparency and gradation. With respect to the horizontal time scale adjustment knob and trigger level adjustment knob, GWinstek provides a very thoughtful design ─the zero key function, which allows engineers to work more effectively.