Harris ADC 100, User Manual

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Harris ADC Device Server User’s Guide
3-4 Video Disk Configuration
the port is not to be used for playing, or to CLOSE the port so another controller’s
communication port can take control of that video port number. Normally, this should
have the same value as the VIDEO INPUT PORT if not zero.
NOTE:
A single disk port can only play or record at a given time (not both). The ADC-100
NT changes from input to output port and back when required, but will not
change until it has finished its current task and is in STANDBY. For example it can
be scheduled to record a news feed for an hour, then play that news program the
next hour on the same port providing there is at least 10 seconds (disk dependent)
from the time it ends recording to the time it is scheduled to begin play out. If
play out must begin sooner, or during recording, then a different disk port of that
video disk must be used to play out the news that is recorded
Disk Port Is Air Protected . Applies only to ports that use the air protect feature. This should
only be enabled on the Air disk port, not the Protect disk port. When enabled, the disk
port generates an error 10 frames after the disk does not respond that it is playing or the
disk stops communicating (which causes the air protect software to switch to the protect
disk). When disabled, disks have a 35 frame time out before an error will be generated.
Close Disk Port When Not In Use . The default is disabled. This feature is rarely used. It
should only be enabled when the disk port is used by different controllers at different
times (for example the ADC-100/NT and a Turbo product). A television station might use
it so the day shift plays out from the disk port and the night shift records new material
into the port (however, this is limiting because if a spot needs to be recorded into the disk
during the day, the port is busy for playout).
Disk To Use As Storage Port . Select a disk to be used for storing clips. Typically this will be
the same disk being configured. Default is Self.
Additional Port Of Same Disk . Default: None (not used). This device parameter is only used
when you want to assign two video ports from the same video disk to the same play list.
There are only two situations where this is useful: (1) You want to do mixed effects from
one piece of material in the disk to the next piece of material in the disk. (2) You want to
play spots smaller than P Po 10 disk cue time. In situation #1 you
must have two different video ports from the same disk because you need two streams of
simultaneous video do the mix. In situation #2 two ports can allow the next port to get
cued and ready simultaneously thus allowing a very short spot to play and the next event
will be cued on the other port.
To configure two video disk ports from the same disk to the same list:
1.
Assign both disk ports to the list as primary ports (air disk ports) not as protect ports.