... modeAuto, Normal, SingleTrigger couplingDC, AC, LF-reject, HF- rejectTrigger typeEdge, Pulse width, VideoTrigger level rangeInternal: ±8 div from screen center; EXT:±1 ... , triangle etc.Built-in multiple modulation function, including AM, FM, PWM, FSK, PSK and Bias modulation.1uHz to 40MHz frequency sweep ...