PBS and Univision, the nation's largest Spanish-language TV network, will join in a first-time collaboration when they simultaneously broadcast "SIDA Is AIDS" on Oct. 30. The one-hour documentary, co-produced by KCET and Sylvan Productions in Los Angeles and slated for PBS' Latino Consortium series, focuses on the special gravity of the AIDS epidemic among Latinos (who know the disease as SIDA-- sindrome de inmunodeficiencia adquerida ) . "Although Hispanics comprise 7% of the U.S. population, they represent 14% of the AIDS cases reported in the last five years," said David L. Crippens, KCET's vice president of educational enterprises. "This unique dual network effort between Univision and (PBS) will reach out to Hispanic families with the message that they can become a vital component in halting AIDS." The program airs locally at 7 p.m. on KCET and Univision's KMEX Channel 34.