VeEX MPA User Manual page 261

MPA_e_manual_D07-00-129P_RevA00
Protocol Tabs
Enabling/Disabling OTN Scramble Mode
1. Select the OTN tab.
2. Select Transmit and Set.
3. Select the SET 2 button from the Transmit/Set window.
4. Select Scramble and then Enable or Disable.
If the Transmit and Receive Settings Control is set to Couple, Scramble is
automatically changed under the Receive settings. If Settings Control is set to
Independent, then Scramble mode can be changed for the receive signal by
selecting Receive, SET 1, and changing the Scramble setting.
Disabling both Forward Error Correction and Scrambling at the same time may
cause a Loss of Frame condition due to a lack of sufficient zero to one transitions for
valid data/clock recovery.
Enabling/Disabling OTN FEC Mode
1. Select the OTN tab.
2. Select Transmit and Set.
3. Select the SET 2 button from the Transmit/Set window.
4. Select Forward Error Correction and then Enable or Disable.
If the Transmit and Receive Settings Control is set to Couple, FEC is
automatically changed under the Receive settings. If Settings Control is set to
Independent, then FEC mode can be changed for the receive signal by selecting
Receive, SET 1, and changing the Forward Error Correction setting.
Disabling both Forward Error Correction and Scrambling at the same time may
cause a Loss of Frame condition due to a lack of sufficient zero to one transitions for
valid data/clock recovery.
Monitoring OTN SAPI and DAPI Traces
1. Select the Receive button from the OTN tab.
2. Select the OTN OH tab along the left side of the screen.
3. Select one of the following OTN sections:
OTU, ODU-A, or TCM,
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