EXFO FTB-8100 Series, User Manual, Page: 221 / 518

SONET Tabs
SONET/SDH Application
209
LOP RX (SONET)
³
ERDI-VCD (Enhanced RDI - VT Connectivity Defect): The ERDI-VCD
alarm is declared when bits 5, 6, and 7 of the Z7 byte contain the “110”
pattern, and bit 8 of the V5 byte contain “1”, in five consecutive VT
superframes.
³
ERDI-VPD (Enhanced RDI - VT Path Payload Defect): The ERDI-VPD
alarm is declared when bits 5, 6, and 7 of the Z7 byte contain the “010”
pattern, and bit 8 of the V5 byte contain “0”, in five consecutive VT
superframes.
J2 Trace
³
Received Message
: Displays the J2 value in 16-bytes or 64-bytes
format. The <crc7> represents the CRC-7 for a 16-bytes format. The
last two bytes of a 64-bytes format, <C
R
> and <L
F
>, represent
respectively a carriage return and a line feed.
³
Enable TIM-V
(Trace Identifier Mismatch - VT): Allows enabling the
Trace Identifier Mismatch for the expected message defined. The
Enable TIM-V check box has to be selected to give access to the
expected trace format and message. When the Enable TIM-V check
box is cleared, the J2 1-byte is available from the
LOP OH RX
on
page 210.
³
Expected Message
: Allows entering the message that is expected. J2
value should be ASCII suitable characters. The default message is
EXFO SONET/SDH
for 16 bytes and
EXFO SONET/SDH Analyzer high
order path trace test message for 64 bytes. However, with VCAT/LCAS
the default message will be
EXFO
followed by the VCG number (VCAT
and LCAS) and the SQ (VCAT only) number (for example
EXFO-VCG1-SQ0
) for both 16 and 64 bytes formats.
³
Expected Format : Allows the selection of the format expected.
Choices are
16
or
64
bytes. The default setting is
16 bytes
.