During network routine maintenance, you can set dispersion compensation for the LSXL/LSXLR board to compensate for the transmission fiber dispersion deviation that results from factors such as ambient temperature changes.
Background Information
- Configuration mode 1: Search the best dispersion compensation value and apply the configuration.
- Configuration mode 2: Manually set the dispersion compensation value and apply the configuration.
Precaution
NOTICE: If the configured dispersion compensation value is incorrect, this operation may interrupt services. Hence, use the best dispersion compensation value searched out.
Procedure
- In the NE Explorer, select the board to be configured, and choose .
- Click Query, and you can query the
dispersion compensation parameter.
- Select the unit port or channel. Click State and choose OOS to set the Primary, Secondary State.
- Select the desired port, and click Start Scan. Click OK in the dialog box displayed, and the search status changes to ADJUSTING.
- After successful search, the search status changes to SUCCESS. Click Query, and the currently
best dispersion compensation value is displayed.
NOTE: After successful search, only the search status automatically changes. Other parameters do not change until you query them.
When you start searching the best value, you cannot set the dispersion compensation value.
- Optional: Double-click the Auto Adjust field and set the value in this field to ENABLE or DISABLE.
NOTE:
After you enable the Auto Adjust, the board may be finely tuned and the query result of the dispersion compensation value may change.
- Optional: When you manually set the dispersion
compensation value, double-click the TDC Value (ps/nm) field and set the dispersion compensation value.
NOTE:
The dispersion compensation value must be in the dispersion compensation range.
- Click Apply. Click OK in the dialog box displayed to apply the configuration.
- Select the unit port or channel. Click State and choose IS to set the Primary, Secondary State.
Parameters
Table 1 describes the parameters involved in dispersion compensation.
Field |
Value |
Description |
|---|---|---|
Optical Interface |
For example:207-12LSXL-1(IN/OUT) |
Displays the optical interface of the board configured with dispersion compensation. |
Primary, Secondary State |
OOS-AUMA,UEQ&UAS; OOS-MA,UAS; OOS-AU,UEQ; OOS-AUMA,UEQ; OOS-AU,AINS&UEQ; OOS-AU,MEA; OOS-AUMA,MEA; OOS-AU,AINS&MEA; OOS-AU,FLT; OOS-AUMA,FLT; OOS-AU,AINS&FLT; OOS-MA; IS-NR; IS-NR,SWDL; OOS-MA,SWDL |
Displays the state of the optical interface. OOS-AUMA,UEQ&UAS: The board is not created and in position. OOS-MA,UAS: The board is not created but is in position. OOS-AU,UEQ: The board is in the IS state but not in position. OOS-AUMA,UEQ: The board is in OOS state but not in position. OOS-AU,AINS&UEQ: The board is in AINS state but not in position. OOS-AU,MEA: The board is in the IS state and in position. But the logic type of the board and its physical type mismatch. OOS-AUMA,MEA: The board is in the OOS state and in position. But the logic type of the board and its physical type mismatch. OOS-AU,AINS&MEA: The board is in the AINS state and in position. But the logic type of the board and its physical type mismatch. OOS-AU,FLT: The board is in the IS state and in position. But the board fails. OOS-AUMA,FLT: The board is in the OOS state and in position. But the board fails. OOS-AU,AINS&FLT: The board is in the AINS state and in position. But the board fails. OOS-MA: The board is in the IS state and in position. But it is changed to the OOS state manually. IS-NR: The board is in the IS state and in position. No board failure. IS-NR,SWDL: The board is in the IS state and in position. Software is being loaded. OOS-MA,SWDL: The board is in the IS state and in position. But it is changed to the OOS state manually. Software is being loaded. |
Signal Validation Timer |
00-15 to 48-00 |
Indicates the signal validation timer. |
Auto Adjust |
ENABLE, DISABLE |
Selects whether to use the fine tune switch. When the fine tune switch is set to ENABLE, adjust the dispersion compensation value in the fine adjustment rage to obtain the best dispersion compensation. |
TDC State |
IDLE, SUCCESS, FAIL, ADJUSTING |
Displays the search status of the best dispersion compensation. |
TDC Value (ps/ nm) |
-400 to 400 |
Displays the best dispersion compensation queried from the NE after successful search or the dispersion compensation value that you set. |
TDC Min (ps/nm) |
For example: -400 |
Displays the minimum dispersion compensation queried from the NE. |
TDC Max (ps/ nm) |
For example: 400 |
Displays the maximum dispersion compensation queried from the NE. |
TDC Step (ps/nm) |
For example: 10 |
Indicates the adjustment step adopted dispersion compensation modules. |