Dolby Laboratories DP524 - Manual (Page 20)

3-6
3.5.3 Switch no. 3 - Digital Output Format Selection [up]
Position this switch to corresponds to the type of digital output signal format. Refer
to Section 4 for information regarding audio connections.
Format S101-3
S/PDIF Down
AES/EBU [Up]
The switch setting selects how the digital bit stream is marked. S/PDIF is
synonymous with "consumer" format, AES/EBU is synonymous with "professional"
format.
Note Digital audio output is fed to both the BNC and the XLR connectors of the rear of the unit
simultaneously. However, only one of the connectors may be used at a time; otherwise the unit will be
excessively loaded, and may malfunction.
3.5.4 Switch nos. 4, 5 & 6 - Command/Aux Data
[down]
Switch position determines whether the RS-232 port J105 is configured as an Aux
Data output or is used for remote control.
Mode S101-4
Aux Data [Down]
Command Up
In Aux Data mode, the unit will send out serial data contained in the digital audio
data stream at the baud rate defined by the table below.
In Command Mode, the unit responds to a series of five byte packets at a fixed rate
of 9600 baud. See Section 6.3 for further details.
Switch 5 & 6 sets the baud rate for the AC-3 Aux Data channel as follows:
Baud Rate (AC-3) S101-5 S101-6
0 [Down] [Down]
1200 Down Up
2400 Up Down
9600 Up Up
Notes No handshaking is used in Aux Data mode.
AC-2 Mono supports an aux data rate of 600 Baud only; AC-2 Stereo supports 1200 Baud only. The position
of these switches is therefore immaterial.
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