Frequency Coordination How-To

Frequency coordination generates a list of compatible frequencies for the channels in a session. The results are based on consideration of several factors:

Follow these steps to coordinate frequencies:

  1. Select the channels to be coordinated.
  2. Set Coordination Options.
  3. Import Frequency Scan data for the location.
  4. Identify TV channels active at the location.
  5. Coordinate frequencies.
  6. Deploy coordinated frequencies to the channels.
  7. Generate coordination report.
  8. Export to Tuning Group (Venue 2 only)

1. Select the channels

Select the channels to be coordinated in the Channel List.

By default all channels are selected, including Custom Channels. Uncheck the box in the Select column for channels that don't need to be included in the coordination. For example, equipment that won't be used at all in a particular production can be unselected to simplify the coordination and remove unused channels from the report.

By default all channels in receiver frames are unlocked,  meaning that the frequency coordination process is free to change their frequency in order to arrive at a solution. This is normal for the channels belonging to receiver frames connected to Wireless Designer, which get updated when the coordinated frequency plan is deployed.

Because Custom Channels are not associated with receiver frames connected to Wireless Designer, it is assumed that it's inconvenient or impossible to change their frequencies. So by default they are locked when created, meaning that their frequencies can't be changed by the frequency coordination process. However, If the lock isn't necessary for these reasons, it's a good idea to uncheck the box in the Lock column to give the frequency coordinator more freedom to find a solution.  

Note: In the example above two Custom Channels for IFB equipment are defined with their frequencies locked. This is done because it would be impractical to reprogram all of the IFB body-pack receivers in use every time a new frequency plan is calculated. We see that channel "IFB-1" indicates a conflict. However, in this example the conflict will be resolved even though the channel is locked by rearranging the unlocked channels to realize a conflict free solution. However, this brings up an important point: if a group of locked channels are created or imported into the session from a file, they must not conflict with each other, or the frequency coordination will fail because they cannot be changed. In other words, such groups must be coordinated in advance.

2. Set Coordination Options

Optional.  The frequency coordination process is controlled by a number of parameters. The default values of these parameters are correct for most situations but they can be adjusted if necessary.

To access these parameters, click Coordination Options in the tool bar.

The Coordination Options dialog will open.

It shows the following options :

When done click OK.

3. Import Frequency Scan data

Optional. The Frequency Scan tool can be used to monitor a location and detect the frequency and level of ambient RF signals. Including scan data in the frequency coordination improves the accuracy of the coordinated frequency list and is highly recommended.

Run the frequency scan, then click Import Scan Data in the tool bar.

The data will be displayed in the spectrum analyzer, in yellow.

The Scan Data Threshold setting, shown as a red horizontal line in the spectrum analyzer, controls the level at which the signals in the scan data affect the coordination calculations. The default level of 10 is suitable for most applications, but  it may need to be increased in difficult cases with a high noise floor.

Tip - For optimum coordination results, start with the default scan data threshold. Then, decrease it slightly and repeat the coordination. Do this until you find the lowest threshold that allows a successful coordination. This forces the carriers into the quietest possible locations.

 

 

 

Frequency scan data may be captured on site at an earlier time and saved to a file. This can be very convenient if it's not practical to run frequency scans, especially when coordination must be done off site. To import saved scan data, click Import Scan Data from File and select a file using the Open dialog.

Tip - Click Clear Scan Data on the tool bar to remove imported scan data.

 

 

4. Identify TV channels

If you have not imported frequency scan data in step 2 you'll need to manually identify broadcast TV channels affecting the location.

Right click the TV channel numbers you need to include and choose Enable TV Channel from the popup menu. Selected TV channels will be filled with a green background.

Tip - Be sure your current locale setting is correct so that the TV channel scale is accurate for your location.

 

 

5. Coordinate frequencies

Click Coordinate Selected Channels to start the automatic frequency coordination process.

The Progress Meter will indicate that Wireless Designer is busy calculating the frequency list.

You can click Stop Frequency Coordination to abort the process. When the process is finished, the spectrum analyzer, report window and channel list are updated to reflect the newly calculated frequencies.

The new frequencies are ready to be deployed to the selected channels in the system.

Tip - You can perform a coordination manually by moving the carrier frequencies with the mouse until no conflicts are reported. This takes more time than automatic coordination but it can be interesting and even fun to do it this way!

 

 

 

6. Deploy coordinated frequencies

Click Deploy to System:

This confirmation dialog may open.

Click Yes to confirm or Cancel to abort. Check Don't show this again. to hide this dialog in the future. If Yes, the selected channels are updated with the new frequencies. The changes take effect immediately on any connected devices.

If you leave the Frequency Coordination tab without deploying this confirmation dialog will open.

This is done to make sure you don't lose coordination results accidentally. Click Apply Changes and Leave to deploy the coordinated frequencies before leaving the Frequency Coordination tab.

7. Generate coordination report

Optional. Click Generate Report to create the coordination report.

The report is opened in a separate window.

The format includes detailed information about the system including the coordinated frequencies and a conflict list. To save the report, choose File->Save As... on the report window menu.

The Save As dialog opens.

Two report types can be generated - a fancy HTML report and a simple text report. The default is HTML. Select the report type from the Save as type: drop down list.

Browse to the desired location in the file system. Give the file a meaningful name and click Save.

Tip - The HTML report can be opened in a web browser and printed. If you wish to print the background colors in the report, be sure that the Print Background Colors and Images option in the web browser's print (or page) setup is checked.

 

 

 

8. Export to Tuning Group (Venue 2 only)

Optional. The Venue 2 receiver offers user-defined tuning groups which are stored in the non-volatile memory internal to the device. These are 4 of these groups, named U, V, W and X. The frequency list resulting from a frequency coordination can be exported to one of these tuning groups on connected Venue 2 receivers.

To do this, click Export To Tuning Group in the tool bar.

The Export To Tuning Group dialog will open.

Select the group you wish to use and give it a short name (8 character limit). Click Export to transfer the coordinated frequencies to the Venue 2 receivers. This action copies to each receiver only the frequencies falling within its the tuning range, starting from group index 1. The previous contents of these locations are overwritten by this action.

The exported frequencies can be seen in the Tuning Groups tab in the Frame Settings for each connected Venue 2 receiver.