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4.2
COMMAND SYNTAX DESCRIPTION
SERIAL PROTOCOL
Models 8084/8084AD/8085 Closed Caption Encoder Manual
The
Command
line
bold underlined text.
bold normal text. The default line shows the parameter values that will be
invoked if the optional parameter(s) are omitted. Many of the commands
use control characters which are indicated by a carat character '^'
preceding a letter.
(E.g. Control-A is shown as ^A).
characters are shown enclosed in <brackets>. (See section 4.2.1 for a
description of the control characters and special characters and their ASCII
values). (All ASCII values are shown in hexadecimal notation). Parameters
are shown in lower case.
parameters and their values). All upper case alphanumeric characters that
are not preceded by the carat or enclosed in brackets are to be interpreted
as individual characters. (E.g. F1 is an 'F' followed by a '1').
4.2.1
Special Characters
Most commands use control characters to communicate with the encoder.
The chart below shows the designators for the control characters and other
special characters that are used in the command descriptions
Designator
^A
Control-A
^B
Control-B
^C
Control-C
^F
Control-F
^G
Control-G
^H
Control-H (backspace)
^X
Control-X (delete line)
<sp>
Space
<cr>
Carriage Return
<xon>
Halt transmission
<xoff>
Start Transmission
4.2.2
Parameters
Some commands use parameters with variable values. The command
descriptions use a generic designator to indicate these parameters. The
chart below shows each of the designators with their meanings and the
permitted values.
The values shown are the actual characters to be
inserted into the command message.
separated from each other by a <sp>.
Revision 1.6.6
shows
the
Optional
parameters
(See section 4.2.2 for a description of the
Name
Normally parameters should be
required
information
are
shown
Other special
ASCII Values
(Hex)
01
02
03
06
07
08
18
20
0D
11
13
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in
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