Download ANT-5 SDH Access Tester User`s Guide

The SDH Access Tester Application
4.3.1.4 Channel Setup Tx
Selecting the Channel element for the
transmitter side opens the Channel Setup Tx
panel, allowing selection of the SDH tributary
channel which is to be tested.
This element will not be available if a PDH
interface has been selected.
The Tx channel is selected by entering the
discrete TUG and TU numbers for the channel
in the appropriate window. The availability of
different TUG-3, TUG-2 and TU-12 groups for
selection is dependent upon the SDH Virtual
Container.
For example, if a VC-3 has been selected for a test, then only the TUG-3 parameter
can be adjusted, enabling selection of which TUG-3 within the VC-4 will carry the
VC-3 payload. Alternatively, if a VC-12 has been selected for a test, then the TUG-3,
TUG-2 and TU-12 can all be adjusted, enabling selection of which TU-12 will carry the
VC-12 payload.
As an alternative to selecting the discrete TUG and TU numbers, the corresponding
number of the Virtual Container can be selected. This is of benefit when setting up
VC-12s or other complicated mappings. On entering a VC number, the TUG and TU
numbers will automatically change to match the new VC. The table in Section 12.4,
SDH Tributary Numbering, gives the relationship between the VC numbers and TUG
numbers for the Tributary and Timeslot (ITU-T) numbering methods.
4.3.1.5 PDH Setup Tx
Selecting the PDH element for the transmitter
side opens the PDH Setup Tx panel, allowing
selection of the PDH parameters for the test
signal.
The test signal is either injected into the SDH
Virtual Container if an SDH line interface has
been selected, or is passed directly to the PDH
line interface if a PDH line interface has been
selected.
If Bulk has been selected as the Tributary in the SDH Virtual Container then the PDH
Setup Tx panel will not be available.
Note: If an SDH line interface has been selected, only bit rates and framing types
appropriate for the SDH configuration will be displayed as options within this panel.
PDH Low Rate is only applicable if Nx64 testing is required, See Section 4.4.12.
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