For A series modules (excluding A264), this feature is available starting from FPGA version 25.6.5, and for B series modules, it is available starting from FPGA version 5710.

The primary/standby channel function is configured at the receiving end. Its basic principle is to allow the receiving channel to designate up to three standby channels as backup signal sources. This function is an extension of the output mixing feature and operates after the audio signal reception buffer but before the I2S output.

When standby channels are set, if the output mixer detects a data interruption in the primary channel, it will replicate data from the standby channels in the order of first, second, and third priority to replace the interrupted data of the primary channel, ensuring continuous data flow in the primary channel.

The new firmware version provided on the download page and the PC software both support this function.