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8083XDS-AD Analog and SD-SDI XDS Encoder
3.5
PARALLEL REMOTE CONTROL CONNECTIONS
Page 3-22
The PARALLEL 9 pin female 'D' connector provides a method of
connecting 'closure to ground' remote control GPI signals to control the
XDS encoder. Each input has an internal 47K ohm pull-up to +5 volts. The
pin assignment of the connector is as follows:
Parallel
Monitor
Pin
Bit
1
2
3
4
5
6
7
8
9
3.5.1 Disabling the Caption Keyer using the Parallel Remote Control
The Caption Keyer Disable GPI has two possible modes: 'master' mode
and 'temporary' mode. These are configurable using the DIP switch located
inside the unit. From the factory, this GPI is configured for 'master' mode
operation. Most users will prefer this configuration. See section 5.3.3 for
instructions on changing the DIP switch settings.
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 XDS encoder.
Similarly, there are GPI signals to disable serial ports B and C as well.
Revision 1.0.2
Function
Ground
0
Serial Port A Disable
2
Serial Port B Disable
4
Serial Port C Disable
6
Not used
7
Bypass Relay Enable
1
Caption Keyer Disable
3
Caption Shift Up
Ground
OPERATION
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