itsIfSdiReference 1.3.6.1.4.1.2928.6.2.16.1.1.7.1.4

Selects the source interface to use as timing reference for output alignment. The source can be any interface on the same board. The value is the relative interface number on the board, where the first interface on the board is number 1, the second is number 2 and so on. A value of `0' (zero) indicates the node sync. The default is itself, which equals to through timing. As through timing is not available on JPEG 2000 decoder, selection of the interface itself means node sync. This object is applicable only if the interface supports reference locking, i.e. if the `ref' bit is set in itsIfCapabilities.