The FG502 Function Generator Plug-In provides low distortion sine, square, triangle, positive and negative pulse and ramp waveforms. Frequency range from 0.1 Hz to 11 MHz. A voltage controlled frequency (VCF) controls the output frequency from an external source. A +2.5 V square wave trigger is available at the front panel and a variable DC offset of ?5 V is also provided. Designed to operate in a TM500-Series power module (sold separately).