Bosch 8500 User Manual

EN | 80

Bosch Security Systems | December 13, 2005

site switcher. The control data line should be connected to a LTC 8780 Series Data 
Converter to provide address decoding functions for the satellite site. If operators at 
the satellite site are permitted to control pan/tilt/zoom-equipped cameras, a 
LTC 8569 Series Code Merger must be installed at the satellite site. The Code 
Merger combines 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 video trunk 
lines to link the remote sites to the Main site. The number of trunk lines from a sat-
ellite site determines the maximum number of cameras from that site that may be 
viewed simultaneously at the Main site. A satellite switcher model must be selected 
so that it provides the desired number of local monitor outputs plus the number of 
monitor outputs that will be used as trunk lines.

The Main site switcher must include sufficient camera inputs for local cameras plus 
trunk lines. The maximum physical number of camera inputs or monitor outputs 
used as trunk lines cannot exceed the capacity of the system. A single Main site 
switcher can control multiple satellite sites up to its video input limit. If full matrix 
switching is required at the Main site, the number of trunk lines from each satellite 
site must equal the number of monitors connected to the Main site switcher. Multi-
ple independently controlled Main site systems can be combined to provide large 
numbers of monitor outputs at the Main site. System capacities are listed below:

Since Main site Allegiant Series switchers support access to a large quantity of 
remote satellite cameras, they provide additional logical camera numbers for identi-
fying the location of the satellite camera inputs in the system. These logical camera 
numbers can also include titles which would appear on the Main site's monitors for 
any remote cameras. Since each camera (anywhere in the system) must have a 
unique camera number, logical camera numbers together with physical camera 
inputs make up the total system camera capacity. Thus, there is a trade-off between 
the total number of Main site cameras and the number of inputs used as trunk lines.

The more inputs used as trunk lines, the fewer there are for use as direct camera 
inputs.

System Type

Max. Camera 
Inputs

Max. Monitor 
Outputs

Max. No. of 
Satellite Sites

Model No.

Maximum Number System Cameras*