Clock out type. Currently, there are seven types: SDH, TDM, system, 19 MHzm, systemObsolete, external and external1. Options: 1.sdh(1) - indicates that output clock type is SDH 2.tdm(2) - indicates that output clock type is TDM 3.system(3) - indicates that output clock type is system 4.clk19M(4) - indicates that output clock type is clk19M 5.systemObsolete(5) - indicates that output clock type is systemObsolete 6.external(6) - indicates that output clock type is external 7.external1(7) - indicates that output clock type is external1