Grass Valley LGK-3901 - Manual (Page 44)

GUIDE TO INSTALLATION AND OPERATION
38 | LGK-3901/DSK-3901
To configure an LGK-3901/DSK-3901 to forward commands onto a Graphics Co-Processor connect a serial link
between the card and the Co-Processor and set the protocol and baud rate for the serial port as follows:
• SETUP > SERIAL COMMS > SERIAL PORTS > COM 1/2 > PROTOCOL > INTUITION
• SETUP > SERIAL COMMS > SERIAL PORTS > COM 1/2 > BAUD RATE > 19200
4.11.2 Automatic Keyer Management
Automatic Keyer Management options may be used in conjunction with command forwarding to simplify the control of
LGK-3901/DSK-3901 and Graphics Co-Processor keying layers.
Whenever the LGK-3901/DSK-3901 receives a command from automation to cut up a layer on the Co-Processor, the
Automatic Keyer Management options permit a ‘Load Live’ to occur with the associated keying layer on the LGK-
3901/DSK-3901 being cut up automatically. Also if automation cuts down all Co-Processor layers the LGK-3901/DSK-
3901 can cut down the associated keying layer and turn off ‘Load Live’.
The Automatic Keyer Management options are set up via the following front panel menu options:
• SETUP > INTUITION > KEYER ASSIGN
o Assigns Automatic Keyer Management to one keying layer of the LGK-3901/DSK-3901
• SETUP > INTUITION > KEYER RELEASE
o Defines how the assigned keyer of the LGK-3901/DSK-3901 is released when all Co-Processor
layers are cut down. When enabled the assigned keying layer is automatically cut down. When
disabled the assigned keying layer remains cut up.
• SETUP > INTUITION > FILL&KEY INPUT
o Determines which external fill/key is routed to the assigned keyer for Automatic Keyer Management
The status of the Co-Processor layers controlled by command forwarding may be monitored from the SETUP >
INTUITION > KEYER STATUS front panel menu.
Note: Automatic Keyer Management will only work correctly when used in conjunction with Command Forwarding.
This is because the LGK-3901/DSK-3901 maintains the layer status of the Graphics Co-Processor based on the
automation commands it forwards. If the operator changes the layer status of the Co-Processor in any other way (for
example via its own front panel), the LGK-3901/DSK-3901 will not be aware of any change and will not be able to
perform automatic keyer management correctly.
4.11.2.1 Example
Below is an example of automation cutting up two layers on a Graphics Co-Processor by using command forwarding
through an LGK-3901 with the following settings:
• Default Keyer Assign DSK 1
• Keyer
Release Enabled
• Fill & Key Input
Fill-1/Key-1
1. Cut up one Co-Processor layer “35 1”
• LGK-3901 maps the command “35 1” to “30 1” and forwards it to the Co-Processor
• The Co-Processor cuts up its first layer
• LGK-3901 performs ‘Load Live’ on DSK 1 using Fill-1/Key-1