HCT-SDH-155 Manual

4. Event RecordEvent record interface including: trace overhead test, regular overhead test, pointer value test,pointer sequence test, error insert test, insert alarm, pointer adjusting test as in Figure 4-1.4.1. Trace Overhead TestFigure 4-1 Event Record InterfaceTrace overhead test includes HOPOH (J0, J1) & LOPOH (J0, J2). Each part involves “Transmitvalue”, “Expected value” and “Receive value”. The input value or parameter of “Transmit value” and“Expected value” is set up by the ”Set” shortcut key, of which the result influences display select ofTCM in LED. “Receive value” will not be controlled by a shortcut key and receive in real time. Theinitial interface is HOPOH. See Figure 4-2 as follows:Figure 4-2 Trace Overhead TestJ0 has default value of “111111111111111”. J1 & J2 have default value of “111111111111111”.24