Clear Waves allows you to add a label or description to any frequency within the frequency set. When you left-click on a frequency in the results window then a DialogBox appears that allows you to enter some text. When you are finished then press the ‘OK’ button. If you choose to create a PDF report the description you just entered will also be included. Alternatively, you can use this DialogBox to exclude a frequency from all future intermodulation analyses.
Adding a description serves another important purpose — it designates that frequency as a “reserved” frequency. A reserved frequency is one that will always be included in the frequency set that results from an intermodulation analysis.
Reserved frequencies provides a means for a user to enter one or more frequencies into the coordination for those instances where a particular device is considered mandatory. For example, facilities or events often have a pool of existing equipment to which channels will need to be added. Also guest systems using preconfigured channels may have to be integrated and coordinated with resident systems.
There are two ways to add Reserved frequencies — from the main menu select Intermodulation > Reserved Frequencies, or from the Results window left-click on a frequency and add a description (as explained above). When you use the latter method and then go to Intermodulation > Reserved Frequencies, you should see the frequencies have been added.
To copy, cut or paste a description, select a frequency in the results window and right-click. If a description is ‘cut’, then the corresponding frequency will be removed from the reserved frequencies. Similarly, if a description is ‘pasted’, then the corresponding frequency will be added as a reserved frequency.
Manually Lockout Frequency Ranges
Clear Waves’ lockout feature allows you to manually lockout frequency ranges of your choosing. Frequencies within the locked-out regions are removed from consideration as potential candidates for a frequency set. This feature is accessed from the main menu by selecting Intermodulation > Lockout Frequency Ranges. When the Lockout Frequency Ranges dialogbox appears enter Start and End frequencies, in MHz, and press the Add button. The frequency range you just entered will be added to a growing list of frequencies that will be excluded from the frequency set.
The frequency set shown above was generated with two regions locked-out: 520 – 570 MHz and 620 – 670 MHz. As you can see, the resultant frequency set does not include any frequencies from those regions.
Lockout DTV Channels
Clear Waves’ intermodulation analysis allows you to manually lockout DTV channels of your choosing. This feature is accessed from the main menu by selecting Intermodulation > Lockout DTV Channels. For channels you select their corresponding frequency range is locked-out of the intermodulation analysis — that is, frequencies within locked-out regions are removed from consideration as potential candidates of a frequency set.
There are two ways to explicitly exclude a frequency from the frequency set and as a candidate frequency in future intermodulation calculations. One way is to select the frequency by left-clicking in the Results Window. The dialog box that appears has an option to ‘Exclude this frequency from IMD analyses’ — select that option and press ‘OK’.
A second method is to select Intermodulation > Exclude Frequencies from the main menu.
Clear Waves’ Channel Bands feature allows you to organize the frequencies within a frequency set into different groups based on their frequency ranges. This feature is accessed from the main menu by selecting Intermodulation > Channel Bands. Often it is the case where audio engineers are working with a variety of different wireless audio equipment that operate in different frequency ranges. However, because the equipment operates within close geographical proximity then one frequency set is applied when configuring the frequency coordination and assigning channels to transmitters. In addition to setting the Start/End frequency for each band, you can also assign a short name or label. If you wish, channel bands may overlap one another — in which case certain frequencies may belong to more than one channel band. It is important to note that frequencies not included within a channel band will be locked-out of the intermodulation analysis.
In the example above we’ve divided our frequency range (470 to 700 MHz) into 6 channel bands. Under the ‘Band’ column is listed the channel band’s label that each frequency belongs to. Also, the number in brackets is the total number of frequencies that fall within that channel band. As seen above, the frequency 533.375 MHz falls within two channel bands — “CH-BAND2” and “CH-BAND3”. “CH-BAND2” includes a total of 4 frequencies and “CH-BAND3” includes a total of 9 frequencies. Just to be clear, all channel bands (and frequencies) belong to the same frequency set — hence, frequencies in different channel bands are still intermod-compatible.