Adjust Compatibility Settings

Compatibility settings allow you to dictate the spacing between synthesized frequencies and other frequencies, including intermodulation products. Greater frequency spacing parameters allow more flexibility in the operating distances of wireless systems and more stable performance across a system's operating range; smaller spacing parameters could get you more frequencies, but they might result in less stable performance.

  1. From the Frequency Coordination workspace, select a device header (dark grey bar). You can select multiple devices by holding the Ctrl key.
  2. Click the Compatibility tab.
  3. Select a compatibility profile from the drop-down menu. Assigning a profile applies predefined compatibility settings to this component.
    • Standard - This setting uses the default channel spacing. Use this setting to achieve a balance between robust operation and number of frequencies.
    • Robust - This setting uses more conservative spacing to avoid interference with priority equipment. Use this setting to synthesize frequencies for high-priority audio channels, or when a wide variety of transmitter-to-receiver distances may occur (that is, some transmitters operate in close proximity to the receiver, while others are at a much greater distance). Because this setting requires the greatest spacing between frequencies, fewer frequencies will be available in a given amount of spectrum than would be if the Standard or More Frequencies settings were used. If enough frequencies can be found, this is the best option.
    • More frequencies - This setting uses more aggressive spacing to assign more frequencies. Use this setting when the greatest possible number of frequencies is needed. Because this setting allows the closest spacing of frequencies, the working ranges of the systems using them may be more limited, including transmitter-to-receiver antenna distance and minimum transmitter to transmitter distance.
  4. If needed, adjust individual compatibility settings by moving the frequency axis for each setting.
    • Channel spacing - Define how close a carrier frequency is allowed to get to another carrier frequency.
    • Intermod spacing - Define channel spacing values for intermodulation products in both two and three-transmitter scenarios. Specifying the channel-to-intermod spacings excludes the selected spacing requirements from a frequency calculation, potentially allowing more channels on the air. In general, exclude intermods at levels known to be too low to generate interference.
    • Front-end filter - If the filter is fixed, drag the frequency axis to adjust the span.
    Note: You can click Revert to undo any changes you've made to the selected compatibility profile. If you adjust individual settings and want to re-use those updated settings, click Save to create a modified version of this compatibility profile. Modified compatibility profiles appear with an asterisk in the drop-down menu.
  5. When finished, click Calculate to apply the settings.
Note: The default compatibility level for all devices is "standard", but you can update that setting if you're adding multiple devices and don't want to manually change the compatibility level of each device. Go to Preferences > Coordination > Compatibility and double-click in the Coordination Preference column for the model you want to edit. Select a channel spacing option.