The periodic message scheduler service can be used to send ARINC 708 messages at fixed intervals (update rate).

The schedule must contain one message consisting of a single buffer or an array of buffers. The buffer contains the MXF_A708_DATAREC record to transmit. The schedule is characterized by its update rate.

If the list consists of one buffer, then a single ARINC 708 data is sent at the message update rate. If a message includes many buffers, then the message frame containing one MXF_A708_DATAREC for each buffer is sent at the message update rate.

The complete logic of the scheduler to send messages is explained in the section Scheduled Transmit Service.

The next sections demonstrate how to send and update periodic messages.