Chapter 1 Overview
1-12
No.
Item
Specifications
3.1.2.4
Mixed payload
Mapping
Can be set for dummy values of TUG3 or TUG2 of STM-1
in the measured channel.
SONET:
The arbitrary combination of STS1SPE and
VT6/VT2/VT1.5 mapping is possible.
SDH:
The arbitrary combination of VC3 and VC2/VC12/VC11
mapping is possible.
Payload pattern
2
11
−
1, 2
15
−
1 (Invert), all0, all1
3.1.2.5
Test pattern
PRBS: 2
11
−
1, 2
15
−
1, 2
20
−
1, 2
23
−
1, 2
20
−
1 (Zero suppress),
2
31
−
1
Invert ON/OFF
(2
11
−
1, 2
20
−
1, 2
20
−
1 (Zero suppress):
DSn/PDH mapping only)
(2
15
−
1, 2
23
−
1, 2
31
−
1: STS48c/12c, VC-16c/4c)
(mark ratio is 1/2 when no frame)
Word: 16 bits. Program, all0, all1
Can set Tx/Rx independently.
3.1.2.6
Dummy channel
Mode
Pattern
Copy/Dummy
2
11
−
1, 2
15
−
1 (Invert), all0, all1
3.1.2.7
Preset data
TOH/SOH/POH
Dummy channel POH
Path trace
Dummy channel
path trace
TOH/SOH: All bytes other than B1, B2, H1, H2, and H3.
STS3/STS1, VC3/VC4 POH: All bytes other than B3.
VT1.5/VT2, VC1/VC2 POH: All bytes other than BIP-2.
STS3/STS1, VC3/VC4 POH: All bytes other than B3.
VT1.5/VT2, VC1/VC2 POH: All bytes other than BIP-2.
J0, J1, J2 (CRC7 On/Off)
ASCII data
J1, J2 (CRC7 On/Off)
ASCII data