Dolby Laboratories CP650, Руководство по установке

Страница: 175 / 184

Dolby
®
Model CP650 Installation Manual External Control of CP650
E-3
Query
Querying an Individual Parameter
“<key>=?” returns a “<key>=<value>” output line for that key.
Querying All Available Parameters
“all=?” results in a series of output lines representing every known key in the serial
control system.
Query Errors
If a query cannot be parsed or does not match a known parameter, “error” will be
output. External controllers must wait for the response to a query before proceeding.
Notes
1. The ASCII interface system operates at a baud rate of 9600 bps (8 data bits, 1 stop
bit, No Parity, No Flow Control) and cannot be invoked while the SERIAL
DATA port is in use by the CP650 Setup or Reader Alignment programs.
2. The interface operates in RAW serial mode. Characters are not echoed back to the
controller, and control characters are ignored.
3. Command parsing is not case sensitive.
4. Whitespace (<space>, <tab>, etc.) is ignored on input lines.
5. No error correction (CRC), sync bytes, or protocol is applied to this interface.
Customers must be aware of any stability or dropout issues with their own
hardware.
6. If a command is parsed successfully but the value is out of range (or the same as
the current setting), no error is issued and the command has no effect.
Examples
Operation Character
String to Send
Output from the CP650
To set the CP650 fader
level to 6.5 fader = 65\r\n
To ensure the CP650 is
not muted mute = 0\r\n
To apply the Format 10
button format_button = 3\r\n
To query the status after
the above three
commands are sent query all\r\n fader = 65\r\n
mute = 0\r\n
format_button = 3\r\n
user_formats = 13, 64, 60\r\n
projector = 1\r\n
preset_fader_level = -1, -1, -1, 65, 68, -1, -1, 75\r\n