Figure 51: Audio Control Packet Format - Tektronix WVR8200 User Manual

Display information
Audio Control Packet
display
86
NOTE. Audio features require Option AD or DPE.
The Audio Control Packet display allows you to view information on audio frame
number, sampling frequency, active channels, and relative audio-to-video delay of
each channel, as encoded in the audio control packet metadata. (See Figure 51.)

Figure 51: Audio Control Packet format

For SD signals, transmission of audio control packets is optional for 48 kHz
synchronous operation and required for all other modes of operation (since
it contains the information as to what mode is being used). Where frequent
switching is planned, receiving equipment can be designed to add or drop a
sample following a switch in the four out of five cases where the sequence is
broken. The challenge in such a system is to detect that a switch has occurred.
This can be facilitated by use of the data block number in the ancillary data format
structure and by including an optional frame counter with the unused bits in the
audio frame number word of the audio control packet. (See Figure 52.)
Figure 52: Audio Control Packet structure
WVR8200 and WVR8300 User Manual