EXFO FTB-8100 Series, User Manual

Page: 309 / 518

SDH Tabs
SONET/SDH Application
297
LOP RX (SDH, TU-3 path)
³
ERDI-CD (Enhanced RDI - Connectivity Defect): The ERDI-CD alarm is
declared when bits 5, 6 and 7 of the G1 byte contain the “110” pattern
in five consecutive frames.
³
ERDI-PD
(Enhanced RDI - Path Payload Defect): The ERDI-PD alarm is
declared when bits 5, 6 and 7 of the G1 byte contain the “010” pattern
in five consecutive frames.
Note: Refer to Alarm/Error Measurements on page 44 for H / C LEDs , and Seconds
information.
J1 Trace
³
Received Message
: Displays the J1 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 LP-TIM
(Trace Identifier Mismatch - Path): Allows enabling the
Trace Identifier Mismatch for the expected message defined. Enable
LP-TIM
has to be enabled to give access to the expected trace format
and message. When Enable LP-TIM is disabled, the J1 1-byte is
available from the
LOP OH RX (SDH, TU-3 path)
on page 298.
³
Expected Message : Allows entering the message that is expected. J1
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 .