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Video Test Generator User Guide 271
DAXA
Digital Audio Content Available
Class Format parameter setting - Audio signal
Description Specifies which speaker locations are available (present).
Command syntax DAXA mask
mask
0 to 3 (based on the value in the table below).
Normally, each type of audio content is assigned to a particular channel and is always
output on that channel when present. There is one exception to this rule: rear center (RC)
content is switched from channel 5 to 7 whenever rear left (RL) content is simultaneously
present. To simplify this, RC content is thus treated as if it were two different types of
content: RC5 and RC7. When RL content is not present, RC content is output on channel
5 as RC5 content. When RL content is present, RC content is output on channel 7 as RC7
content.
Setting DAXA will automatically set DACA and XAUD :CA parameters to a corresponding
value (see table below). However, this method should not be used to gate channels.
Instead, DAXG should be used after all of the available channels have been selected.
Note: If DAXA is set to a value not found in the table above, then other parameters will not
be automatically set and an error will be generated if the format is loaded while this
condition exists.
Example
DAXA 3 //specifies FR and FL as having audio content
DAXG 3 //gates FR and FL content
FMTU
Related commands DAXG
Content FR FL
Bit 1 0
Value 2 1
DAXA 3
DACA 3
XAUD:CA 0