There are user selectable filters available in the following instruments. The AWG2005&#160 -&#160 500KHz, 1 MHz, 2 MHz, 5 MHz selectable filters. The AWG2020/2021&#160 -&#160 1 MHz, 5 MHz, 20 MHz, 50 MHz selectable filters. The AWG2040/2041&#160 -&#160 10 MHz, 20 MHz, 50 MHz, 100 MHz selectable filters.