Keysight 8904A, Multifunction Synthesizer, DC-600 KHzCondition:* Used, Powers Up. Appears To Function, Unable To Fully Test. Sold As-Is. Additional Notes:* Sine to 600 kHz, square, ramp, triangle to 50 kHz* 12 bit direct digital synthesis* Tone, DTMF, digital, Hop Ram sequence modes* One or two outputs* One to four internal channels* AM, FM, Phi-M, DSBSC, and pulse modulation* Unit to unit phase synchronization* The Keysight 8904A multifunction synthesizer generates accurate sinewaves from 0 Hz to 600 kHz with 0.1 Hz resolution* The 8904A also has five other standard functions: square, triangle, ramp, from 0 Hz to 50 kHz plus dc, and Gaussian white noise * All waveform values in the 8904A are digitally calculated in real time by Keysight Technologies’ Digital Waveform Synthesis IC yielding 12-bit digital accuracy* Full GPIB programmability is also included standard on the 8904AKeysight8904A