Navigation: Realtest Script Language > Syntax Element Details > MACDS Category Indicator Functions Description MACD Signal Line Syntax MACDS(len1, len2, len3) Parameters len1 - faster moving average period (typically 12) len2 - slower moving average period (typically 26) len3 - signal smoothing period (typically 9) Notes MACDS is an EMA-smoothed version of MACD. This is also know as the "signal line". It is calculated as EMA(MACD(len1,len2),len3). This indicator supports one-pass calculation when used in the Data Section with non-variable lengths. Copyright © 2020-2025 Systematic Solutions, LLC