Exfo FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/5 Uživatelský manuál Strana 275

  • Stažení
  • Přidat do mých příruček
  • Tisk
  • Strana
    / 681
  • Tabulka s obsahem
  • ŘEŠENÍ PROBLÉMŮ
  • KNIHY
  • Hodnocené. / 5. Na základě hodnocení zákazníků
Zobrazit stránku 274
Test Results
Power Blazer 263
Alarms/Errors
Errors
FAS (Frame Alignment Signal) is only available with PCM30 CRC-4 or
PCM31 CRC-4 framing.
RX: Bits 2 to 8 of the frame containing the FAS differ from 0011011.
CRC-4 (Cyclical Redundancy Check)
RX: One or more bit errors are detected in a block of data through
cyclical redundancy check.
E-Bit (CRC-4 Error Signal) is only available with PCM30 CRC-4 or
PCM31 CRC-4 framing.
RX: Bit 1 of sub-multiframe (SMF) II in frame 13 and/or 15 is set to 0
indicating a sub-multiframe error.
E2
Alarms
Note: Only AIS is available when the framing is set to Unframed.
AIS (Alarm Indication Signal)
RX: An unframed all-ones signal is received.
LOF (Loss Of Frame)
RX: Four consecutive incorrect frame alignment signals is received.
RAI (Remote Alarm Indication)
RX: Bit 11 of a framed E2 is set to “1”.
Errors
FAS (Frame Alignment Signal)
RX: Bits 1 to 10 of the first frame differ from 1111010000.
Zobrazit stránku 274
1 2 ... 270 271 272 273 274 275 276 277 278 279 280 ... 680 681

Komentáře k této Příručce

Žádné komentáře