Can you explain how to use AC/DC options on this equipment?

For selecting the AC or DC welding mode on Syncrowave 200, refer to Section 4-5 Balance/DIG Control for adjusting the balance control between Electrode Positive (EP) and Electrode Negative (EN). Set controls according to processes you commonly perform like Stick (SMAW), TIG (GTAW), as detailed in specifications within Section 3-5.