HP BER 718 37718A manual STS-1 SPE Background Patterns

STS-1 SPE Background Patterns

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

168