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

STM-16, OC-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2488.32 Mbit/s
Signal structure
Frame alignment signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 x A1, 48 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
Switchable wavelength (depending on option fitted) . . . . . . . . . . . . . . . . . 1310 nm or 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-16, OC-48
Optical Interfaces; STM-16/OC-48
see Sec. 1.3.4, Page S-26
STM-x/AU-3
OC-x
S-29