HP OMNIBER 718 HP 37718A - Manual (Page 178)

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STS-1 SPE Background Patterns
Table 2 STS-1 SPE Background Patterns
Foreground Background choice in
Foreground TUG-3
Background choice in other
AU-3
STS-1 SPE --------- VT-1.5, VT-2 Mapping or SPE
Word (8 bit user programmable
word).
VT-6 Pattern in other VT-6s is numbered. They
contain the word 11NNNNNx, where NNNNN is
the binary number of the TU. VT-1.5, VT-2 Mapping or SPE
Word (8 bit user programmable
word).
VT-2 (2 Mb/s)
Unframed
VT-2 structure, unframed with 2E15-1, 2E9-1
PRBS or 1100 word pattern in all information
bits. VT-2, VT-1.5 Mapping or SPE
Word (8 bit user programmable
word).
VT-2 (2 Mb/s) Framed VT-2 structure, framed with 2E15-1, 2E9-1
PRBS, NUMBERED or 1100 word pattern. In
Numbered mode, each timeslot contains the
pattern 0NNNNNNX where NNNNNN is the
binary number of the TU. The least significant
digit (X) is alternated between 0 and 1 in
successive frames.
VT-2, VT-1.5 Mapping or SPE
Word (8 bit user programmable
word).
VT-1.5 (DS1)
Unframed
VT-1.5 structure, D4 framed with 2E15-1, 2E9-1
PRBS or 1100 Word pattern in other TU-11s. VT-2, VT-1.5 Mapping or SPE
Word (8 bit user programmable
word).
VT-1.5 (DS1) Framed VT-1.5 structure, DS1, D4 framed with 2E15-1,
2E9-1 PRBS, NUMBERED or 1100 word pattern
in other TU-11s.
In Numbered mode, each timeslot contains the
pattern 1NNNNNN1 where NNNNNN is the
binary number of the TU. Framing type will be
the same as the foreground except when SLC96
is selected. In this case, D4 framing is inserted in
the background VT-2, VT-1.5 Mapping or SPE
Word (8 bit user programmable
word).