The Calculations command offers the ability to calculate receiver input signal levels on selected nodes.

Calculation of a Single Node

1. From the Engineering Calcs dialog box, click Single calculations.
2. Select the node on the map receiving light.
3. Select the device on the map containing the laser.
4. The Engineering Calculations dialog box opens.

   

   The dialog box is divided in three major sections: a laser section, a splitter section and a receive types section. This last section is automatically filled in with the node internal modules.

5. From the Wave Length pull-down menu, select a wave length.
6. Select Add > Laser to add a laser to the Lasers section.
7. Select Add > Splitter to add a splitter to the Splitters section.
8. Select the laser from the Lasers section and the splitter input from the Splitters section that you want to connect.

   

9. Click Split to connect the laser output and splitter input together.
   Note: The >> and << button allows the connecting splitters in cascade.
   Note: The Mark button allows the connection of the output of a splitter to the input of a second splitter.
10. A database connection ID is applied to the laser output and splitter input. The output levels of the splitter are also updated.

    

11. Select one output from the Splitters section and one receiver from the Receive Types section that you want to connect.

    

12. Click Rec to connect the splitter output and receiver input together.
    Note: The output of a laser can be connected directly to the input of a node receiver by highlighting both of them and clicking on Rec located on the lower portion of the Lasers section.
13. A connection ID is applied to the splitter output. The input level of the receiver is also updated.

    

    Note: The receiver input signal level highlights in green if the signal level is between the minimum and maximum signal level and in red if the level is outside this range.
14. From the Receive Levels section, select minimum, optimal, or maximum from the pull-down menu and click on Pad to automatically insert a pad on the connection. Click UnPad to remove the highlighted pad.
15. Highlight one of the Conn ID and click Del from the Connections sections to delete the laser or splitter link.
16. Highlight one of the Lasers or Splitters section and click Delete to delete the laser or splitter link.
    Note: To remove a laser or splitter from the engineering calculations, connection with other device must first be removed.
17. Click Post to save modifications to the database.

Optimize Laser/Splitter Selection

1. From the Engineering Calcs dialog box, click Global calculations.
2. Select the device on the map containing the laser.
3. The Engineering Calculations dialog box opens.

   

   Note: In the Receive Type section, Global calculation retrieves all of the node receivers connected to the head-end or building selected.
4. From the Wave Length pull-down menu, select a wave length.
5. Select Connectivity > Optimize.
6. The Coupler Optimization dialog box opens.

   

7. Highlight the receivers to optimize.
8. Select the laser to use with the selected receivers.
9. Choose to what level setting (minimum, optimal, or maximum) the input signal level and the pad selection will be calculated.
10. Choose the largest pad value to use and the maximum number of coupler to use during the optimization process.
11. Click Go to proceed with the optimization.
12. The Engineering Optimization Report opens.

    

13. Select Output > Text File to save the report into text file format.
14. Click Post to apply the configuration.

    

Disconnect Connectivity from a Laser to Receiver

1. From the Engineering Calculations dialog box, select Connectivity > Disconnect.
2. The Cascade Disconnect dialog box opens.

   

3. Select the Receiver to disconnect and click Go.
4. The receiver disconnects. Activating the Delete unused Lasers and Splitters check box removes unused splitters and lasers from the engineering calculations.

Creating a Laser, Node, or BOM Report

1. From the Engineering Calculations dialog box, select Report > [laser, node, or BOM].
2. The selected report dialog box opens.

   

3. Select Output > Text File to save the report into text file format.
4. Click Cancel to close the dialog box.

Calculating an FTTx Network

1. From the Engineering Calcs dialog box, click Single calculations.
2. Select a node on the map.
3. The Engineering Calculations dialog box opens.

   

4. From the Wave Length pull-down menu, select a wave length to review the signal levels on the nodes.
5. Click Post to apply the calculation to the database.