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Designator
Name
ws
Word size
par
Parity
tz
Time zone
ovr
Override
5.2.3.
Flow Control Handshaking
When the encoder's input buffer is nearly full the device sends an XOFF for each character received. If the
Caption software continues to send data and the input buffer fills completely, and creates a buffer overflow
state. When the input buffer has overflowed some data may be lost. When the input buffer is nearly empty
the caption encoder will transmit an XON character. The MIO–CCE–4K/3G uses hardware flow control to
prevent lost data. The unit will turn off the RS232 RTS signal when the buffer is nearly full, and will turn
RTS on when the input buffer is nearly empty.
5.2.4.
Break Handling
A break character can be sent to the caption encoder to cause the content of the associated input buffer to
be discarded. If the break character is sent to the modem port the modem character buffers will also be
discarded. This allows the user to circumvent a backlog of data input, and regain immediate control of the
encoder. The best way to reset a communications port is to send a break followed by a Control-F – Control-
F command.
5.2.5.
Command Responses
When the MIO-CCE accepts any of the Control-A commands it will respond by sending back an asterisk
'*' prompt with the following exceptions:
When in real time mode it will respond with a colon ':' prompt.
When an article is being defined it will respond with a '>'.
5.3.
COMMON COMMANDS
5.3.1.
Set Baud Rate
The caption encoder's serial remote control ports may be set to operate at any standard baud rate from
1200 to 57600. When this command is executed the new baud rate will become immediately active, and
the sending computer must immediately switch to the new rate. The new baud rate is stored in non-volatile
memory and will be restored when the unit is powered up.
The modem ports may have a lower maximum baud rate that is related to the maximum baud rate of the
built-in modems. The baud rate for the modem ports will also limit the maximum connection rate that the
modems will allow.
SMPTE ST 2110/4K/3G/HD/SD Closed Caption Encoder with Media–to–IP Streaming
Values
Description
7
7 bit data word
8
8 bit data word
O
Odd parity
E
Even parity
N
No parity
0:00
to
Time zone hours and minutes relative to UTC
23:59
O
Forces override
Revision 1.0
MIO–CCE–4K/3G
Page - 53
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