Quantum Data 881, Руководство пользователя

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258 Appendix A Command Reference
DACA
Digital Audio Channels Available
Class Format parameter setting - Audio signal
Description Specifies which audio channels are active.
Command syntax DACA mask
mask
0 to 3, based on following table.
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 DACA will automatically set DAXA and XAUD :CA parameters to a corresponding
value (see table below).
Note: If DACA 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.
mask
0 to 255 (based on the value in the table below). Notes:
• Setting DACA will automatically set DAXA and XAUD :CA parameters to a
corresponding value (see table below). However, in the case of DACA values 243, 247,
251, and 255, two sets of DAXA and XAUD:CA values are possible. In this case, DAXA
and XAUD:CA settings will be based on those highlighted (in grey) in the table.
• If DACA 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.
Channel 1 2
Bit 0 1
Value 1 2
DACA 3
DAXA 3
XAUD:CA 0