EXFO MAX-800 Series, User Manual

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Test Results
MaxTester
249
Alarms/Errors Overview

ERDI-VCD (Enhanced RDI - VT Connectivity Defect) - SONET
LP-ERDI-CD
(LOP - Enhanced RDI - Connectivity Defect) - SDH
RX : Bits 5, 6, and 7 of the Z7 (SONET) / K4 (SDH) byte contain the “110”
pattern, and bit 8 of the V5 byte contain “1”, in five consecutive VT/LP
superframes.
TX
: Generates a “110” pattern for bits 5, 6, and 7 of the Z7 (SONET) / K4
(SDH) byte, and “1” for bit 8 of the V5 byte.

ERDI-VPD
(Enhanced RDI - VT Path Payload Defect) - SONET
LP-ERDI-PD (LOP - Enhanced RDI - Path Payload Defect) - SDH
RX
: Bits 5, 6, and 7 of the Z7 (SONET) / K4 (SDH) byte contain the “010”
pattern, and bit 8 of the V5 byte contain “0”, in five consecutive VT/LP
superframes.
TX : Generates a “010” pattern for bits 5, 6, and 7 of the Z7 (SONET) / K4
(SDH) byte, and “0” for bit 8 of the V5 byte.
Errors

BIP-2
(Bit-Interleave Parity - 2 bits)
RX :
SONET: The BIP-2 error indicates a parity error by performing a
routine even-parity check over all VT1.5 bytes of the previous frame
of a composite signal (VT1.5/VT2/VT6).
SDH: The BIP-2 error indicates a Low Order Path parity error by
performing a routine even-parity check over all bytes of the
previous VC frame.

REI-V
(Remote Error Indicator - VT) - SONET
LP-REI (Low Order Path - Remote Error Indicator) - SDH
RX
: REI is declared when bit 3 of the V5 byte is set to “1”.