HP 37717C User Manual page 187

STS-1 SPE Background Patterns
Table 2 STS-1 SPE Background Patterns
Foreground
STS-1 SPE
VT-6 Pattern in other VT-6s is numbered. They
contain the word 11NNNNNx, where NNNNN is
the binary number of the TU.
VT-2 (2 Mb/s) VT-2 structure, unframed with 2E15-1, 2E9-1
Unframed PRBS or 1100 word pattern in all information
bits.
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-1.5 (DS1) VT-1.5 structure, D4 framed with 2E15-1, 2E9-1
Unframed PRBS or 1100 Word pattern in other TU-11s.
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
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Background choice in
Foreground TUG-3
---------
Background choice in other
AU-3
VT-1.5, VT-2 Mapping or SPE
Word (8 bit user programmable
word).
VT-1.5, VT-2 Mapping or SPE
Word (8 bit user programmable
word).
VT-2, VT-1.5 Mapping or SPE
Word (8 bit user programmable
word).
VT-2, VT-1.5 Mapping or SPE
Word (8 bit user programmable
word).
VT-2, VT-1.5 Mapping or SPE
Word (8 bit user programmable
word).
VT-2, VT-1.5 Mapping or SPE
Word (8 bit user programmable
word).