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MADI Audio data
Audio data within a MADI stream can be 16, 20 or
24 bit. By using the MADI Audio display it is very easy
to determine the selected channel pair's audio bit
length. If audio is present then the display will show
rapidly changing values, however it will be very easy
to notice that there will be either four (for 20 bit) or
eight (for 16 bit) static zeros in the display.
A1H 000010111101
A1L 010011101101
MADI Audio data (24 bit)
A1H 000010111101
A1L 010011110000
MADI Audio data (20 bit)
A1H 000010111101
A1L 011100000000
MADI Audio data (16 bit)
Within the display, A1L contains the lower 12 bits of
the audio and A1H contains the upper 12 bits.
There are two MADI Audio pages for the selected
channel pair. The first, A1H and A1L, represents the
left channel and the second page, A2H and A2L,
represents the right channel.
Use the MENU encoder [2] to scroll between these
pages.
Bel Digital Audio Limited
AES Channel Status Bytes
Six of the most commonly used Channel Status bytes
can be viewed on the BM-A2-64MADI, plus the
Channel Status Check Sum.
Use the MENU encoder [2] to scroll through these
pages.
CS0 10000001
CS1 00000000
Channel Status Byte 0 and 1
CS2 00000000
CS3 00000000
Channel Status Byte 2 and 3
CS4 00000000
CS5 00000000
Channel Status Byte 4 and 5
CRC 9B
Channel Status Byte Check Sum
An overview for each of the Channel Status Bytes
above can be found in the Appendix.
BM-A2-64MADI User Manual v1.1
17
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