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SEQUENCE - A series of camera scenes that can be
preprogrammed to automatically switch. The Allegiant system
can store up to 60 separate sequences, with each one capable of
having a random camera order, individual camera dwell times,
and SalvoSwitching steps.
TIME EVENT - An Allegiant system feature (available with the
LTC 8059/00 Master Control Software for Windows or the LTC
8850/00 Graphical User Interface software) that enables various
system functions to be periodically activated automatically. Event
functions such as monitor message broadcasts, sequence and
switching operations, receiver/driver actions, message printing,
alarm settings, and execution of custom factory programming can
be stored in the system memory to be executed at a pre-
determined time. The task can be specified to begin on a specific
year, month, day, and time, and can be programmed to repeat at
intervals ranging from every five minutes up to a year.
VERTICAL INTERVAL SWITCHING - Vertical Interval
switching is a method of switching video from camera to camera
during the vertical blanking interval period of the video signal.
This minimizes visual switching disturbances such as rolling,
jitter, video flashes, etc. and eliminates frame information loss
when used with video tape machines.
VersAlarm - A flexible system of configuring alarms using the
optional LTC 8059/00 Master Control Software for Windows or
the LTC 8850/00 Graphical User Interface software. Multiple
groups of monitors can be programmed to respond to alarm
conditions in various ways. In addition, each alarm may call up
from 1 to 4 cameras with user-selectable remote operations.
Alarm video may also be programmed to display user-defined
alarm titles on the monitor overlay display rather than the usual
camera titles.
23
APPENDIX A
23.1 Satellite Systems
A satellite system configuration is usually used for a large
distributed type of system. It may also be used to obtain
extremely large matrix sizes configured in a more conventional
manner. Typically, a single Main control site can be used to
view/control cameras located both locally and at various remote
satellite sites. Since many remote satellite sites can be linked to a
single Main control site, very large, distributed types of systems
can be achieved. If the satellite systems are located at the same site
as the Main system, the result is a large conventional type system.
In a satellite configuration, the Main control site can view/control
any camera in the entire system but the remote satellite sites only
have the ability to view/control cameras associated with their own
site. The satellites may be configured to operate either in an
independent manner or, if desired, have no local viewing/control
capability at all.
The Main site must consist of any Allegiant series switcher
(LTC 8100, LTC 8200, LTC 8300, LTC 8500, LTC 8600,
TC8700, or LTC 8800). Satellite site switchers can be any
Allegiant model, a LTC 5112 switcher, or a LTC 5124 switcher.
A LTC 8780 Series Data converter unit is required at each
satellite site to perform the address decoding and data conversion
for the switching system. If the satellite site contains
pan/tilt/zoom cameras, a LTC 8569 Code Merger unit is also
required at the satellite site. All products are standard models and
the only required software option is to include either the
appropriate Master Control Software for Windows package (LTC
8059/00) or the LTC 8850/00 Graphical User Interface software
package for initial programming of each Allegiant system.
Each satellite site must be provided with an Allegiant control data
line coming from the code distribution unit at the Main site. This
data line carries all pan/tilt/zoom control commands in addition
to the switching commands generated by the Main site switcher.
The control data line should be connected to a LTC 8780 Series
Data Converter unit which will be used to provide the address
decoding functions for the satellite site. If operators will be
stationed at the satellite site and are permitted to control
pan/tilt/zoom equipped cameras, a LTC 8569 Series Code
Merger unit must be installed at the satellite site. The Code
Merger will combine the code generated by the main site and the
satellite site so both sites have control over pan/tilt/zoom
equipped cameras located at the satellite site. The LTC 8780
Series unit can then be connected to one of the data outputs of
the LTC 8569 Series unit.
One or more monitor outputs from each satellite system are used
as 'Trunk' lines to link the remote sites to the Main site. The
number of trunk lines coming from a satellite site determines the
maximum number of different cameras from that site that may be
viewed simultaneously at the Main site. A SatelliteSwitcher can
provide only as many trunk lines as it has monitor outputs.
Each remote satellite switcher would be designed and installed in
the usual way except that sufficient monitor outputs for use as
Trunk lines must be included. The main site switcher is also
designed and installed in the usual way except that camera inputs
sufficient for both local cameras plus Trunk lines must be
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