HCT-SDH-155 Manual

5.2. Data Path (Transparency) TestFor data path test, see Figure 5 -3 as follows:Figure 5 -3 Transparency Test“Trans OH”: D1-D3, D4-D12, E1, E2, F1 and None, with a default value of None.“Trans Pat”: 2E11, 2E15, 2E20 and 2E23, with a default value of 2E11.“Rec. OH”: D1-D3, D4-D12, E1, E2, F1 and None, with a default value of None.“Rec. Pat”: 2E11, 2E15, 2E20, and 2E23, with a default value of 2E11.In data transparency test and SDH path test, PRBS insert type in interface setup menu includesan additional “None” option to realize the interlocking of both interfaces. That is to say, the receivingterminal or/and transmission terminal of both must be None. The last select is applied as the finalparameter of inserting PRBS and can be set up by ”Set” key.The “Set” shortcut key can set up all the input values or parameters.5.3. TCM TestFor TCM test interface, see Figure 5 -4 as follows:Figure 5 -4 TCM Test31