Output Signals For The Adm Tester; Optical Output Signal; Pdh Output Signal - Wavetek ANT-20 Operating Manual

ANT-20SE
1.4

Output signals for the ADM Tester

1.4.1

Optical output signal

The available bit rates depend on the options fitted.
STM-4, OC-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 622.08 Mbit/s
STM-1, OC-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155.52 Mbit/s
STM-0, OC-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.84 Mbit/s
Signal structure
Frame alignment signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . n x A1, n x A2
Parity formation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B1, B2, B3
Section overhead, Transport Overhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . Standard overhead,
Pointer value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "0"
Matching of "ss" bits to . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .STM-x/AU-4
Path overhead and payload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP-UNEQ (all zeros)
Possible modifications
Laser is switchable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ON/OFF
Wavelength is selectable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1310 nm, 1550 nm
Scrambler is permanently. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ON
• No frequency offset possible
• No overhead modifications possible
• No pointer actions
1.4.2

PDH output signal

The PDH output signal can be set as for normal operation. There are no restrictions.
Specifications STM-0/1/4/OC-1/3/12
Optical Interfaces; STM-0/1/4/OC-1/3/12
see Sec. 1.3.8, Page S-4
and "STM-1 Mappings/STS-1 Mappings"
operating manual
STM-x/AU-3
OC-x
S-7