Enabling The Bypass Relay Using The Parallel Remote Control; Disabling The Serial Ports Using The Parallel Remote Control; Shifting Caption Text Up Using The Parallel Remote Control - evertz 8084 Instruction Manual

OPERATION
Models 8084/8084AD/8085 Closed Caption Encoder Manual
In 'master' mode, the keyer will be turned off when the Keyer Disable GPI
input is low and turned on when this GPI input is high.
In 'temporary' mode, the keyer will be disabled while the GPI is held low
and will remain disabled after the GPI input returns HIGH until the next byte
of data is received on any serial remote control port.
3.5.2

Enabling the Bypass Relay using the Parallel Remote Control

The video input(s) will be connected directly to the Bypass Output(s) when
the Bypass Relay Enable GPI is held low. The video input and outputs will
return to normal when the Bypass Relay Enable GPI returns high.
3.5.3

Disabling the Serial Ports using the Parallel Remote Control

When the Port A Disable input is initiated low, Port A will be reset as
though a ^F^F had been received. Further input on this port will be ignored
until the Port A Disable input is released high. This input can be used to
select which port will control the caption encoder.
Similarly, there are GPI signals to disable serial ports B and C as well.
When the Port D Disable input is initiated low, Port D will be reset as
though a ^F^F had been received. If online, the modem will be forced to
hang-up, and the modem will refuse to answer any further phone calls.
Further input on this port will be ignored, until the Port D Disable input is
released high. This input can be used to select which port will control the
caption encoder.
On units equipped with a second modem Port E, there is no parallel port
GPI signal to disable this port.
3.5.4

Shifting Caption Text Up using the Parallel Remote Control

When this GPI is held low, screen position codes (called PACs) in the
caption data will be translated so that captions normally appearing on rows
12 through 15 will now appear on rows 1 through 4. This is intended to
provide compliance with FCC rules, which state that caption text may not
overlap emergency information that often appears at the bottom of the
screen.
Decoded captions may not shift up immediately when this GPI is enabled,
only when a new PAC is transmitted. Some real-time captioning software
packages using roll-up style captions do not insert PACs at all, so these
captions will not be shifted up even when this GPI is enabled.
Revision 1.6.6
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