GUI System Tab767clock.SMA CLK B 10 MHzIn/OutThe transmit signals derive their data's timing from anexternal 10 MHz 75 Ohm TTL timing source attached tothe SMA CLK-B In connector.Chassis (Ext 10 MHz) option appears in the TransmitClock Reference menus, and CLK:Ext 10 MHz displays inthe Quick LED Status area when selected.The SMA CLB-B Out port is a 10 MHz 75 ohm TTLclock.External Clock In StatusMPA units that have the new MCH module support both Internal or External chassisclock references.The External Clock In Status will show Locked when the processor is synchronized tothe Chassis Clock setting.MPA_e_manual_D07-00-129P_RevA00
