While AC termination blocks DC currents and thus saves DC power, its RC circuit however often acts as an edge generator causing significant signal over and undershoots. Another drawback of this termination is that the termination capacitor, CT, contributes to bit-pattern dependent jitter (also discussed in later slides). In general, AC termination is dependent upon the termination line length and does not perform well in environments with multipoint designs where multiple sources are distributed along the line. Schottky diode termination maintains signal integrity by clamping overshoot and undershoot caused by reflections. No impedance matching is involved and its average power dissipation is smaller than with parallel termination. A major drawback however is the diode’s clamping action which removes the data link’s wide common-mode capability by clamping just a forward voltage above Vcc and below ground. This makes network operation non-compliant with the RS-485 standard. Another disadvantage is the diode’s high peak currents during clamping action, which cause radiated emissions thus making diode termination unsuitable for EMI sensitive applications.