HP 37718A Installation And Verification Manual page 34

General Information
Specifications
are generated the Full H4 sequence is
transmitted as per ITU-T G.709.
G1, F2, F3, K3, N1 and all other bytes
are all zero's.
Background STM-1-VC-4 path overhead
(STM-4/STM-16 Only): All bytes except
B3 can be changed from the default
state using OVERHEAD SETUP.
Default values:
J1 is transmitted as all zeros.
B3 is the BIP-8 parity (using even
parity) calculated over the previous
VC-4,before scrambling.
C2 is transmitted as 00000000
(Unequipped)
G1, F2, F3, K3, N1, H4 and all other
bytes are all zero's.
VC-4c/Vc-16c path overhead: 1 column
of 9 bytes followed by 3 (VC-4c) or 15
(VC-16c) columns of fixed stuff
indication.
All bytes except B3 can be changed
from the default state using
OVERHEAD SETUP.
Default values:
J1 - 64 ASCII Null characters.
B3 is the BIP-8 parity (using even
parity) calculated over the previous
VC-4-4c or VC-4-16c,before
scrambling.
C2 is transmitted as 00000001 (PRBS
or Word)
G1, F2, F3, K3, N1, H4 and all other
bytes are all zero's.
AU-3 and TU-3 overhead:
H1/H2 - H2 and the 2 least significant
bits of H1 indicate the offset from the
pointer to the first byte of the VC-3.
The SS bits are set to 10.
1-24
The pointer offset value of the STM-0
is determined by the last setting of New
Pointer test feature.
H3 is transmitted as all zero's except
when used as a payload byte during
negative justification.
VC-3 path overhead: All bytes except
B3 can be changed from the default
state using OVERHEAD SETUP.
Default values:
J1 - 64 ASCII Null characters.
B3 is the BIP-8 parity (using even
parity) calculated over the previous
VC-3,before scrambling.
C2 is transmitted as Hexadecimal 04
(34 Mb/s mapping), 02 (TU Structured)
or FE (Bulk Filled).
H4 is transmitted as all zeros. If TU-2,
TU-11 or TU-12 structured payloads
are generated the Full H4 sequence is
transmitted as per ITU-T G.709.
G1, F2, F3, K3, N1 and all other bytes
are all zero's.
Background STM-1 - VC-3 path
overhead: (STM-1/4/16 only) All bytes
except B3 can be changed from the
default state using OVERHEAD
SETUP.
Default values:
J1 is transmitted as all zeros.
B3 is the BIP-8 parity (using even
parity) calculated over the previous
VC-3,before scrambling.
C2 is transmitted as 00000000
(Unequipped)
G1, F2, F3, K3, N1, H4 and all other
bytes are all zero's.
TU-12/TU-2 path overhead: All bytes
except V1, V2, V5 can be changed
from the default state using
OVERHEAD SETUP.