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en | Hardware Installation Procedure for Standard Systems Utilizing LTC 8904 Series
28
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The LTC 8903 Series bay s VIDEO OUT connectors are labeled A through D, and the Monitor
Bay VIDEO BUS connectors are labeled CAMERA BAY OUTPUT A through CAMERA BAY
OUTPUT D.
The input bay A-D connectors must be connected to corresponding A-D connectors on the
output bay using LTC 8809/00 coax ribbon cables. , page 66 and , page 66 demonstrate
these connections.
5.11.4
Multiple Monitor Bay Consideration
If multiple monitor bays are used in the system, the LTC 8903 Series Input Bay configuration
must be duplicated for each output bay. This is illustrated in system configuration diagrams, ,
page 66 through , page 66. The video inputs from the first set of LTC 8903 Series Input
Bays must be looped through to the second set of input bays using LTC 8809/00 coax ribbon
cables. The LTC 8903 Series bays provide looping connectors for these connections. The
supplied ribbon cable connectors are connected from the LOOP outputs of the first set of
input bays to the corresponding VIDEO IN connectors on the next set of input bays using LTC
8809/00 ribbon cables. This looping can continue as needed. The termination switches on the
LTC 8921/00 Video Input Cards must be turned OFF in all LTC 8903 Series Input bays except
those in the last set (assuming the system will NOT have video looping connections).
5.11.5
Monitor Output Connections
For monitor connections, the LTC 8902 Series Output Bays require the LTC 8808/00 Video
Interconnect (Patch) Panel. Up to 32 monitors per panel can be connected. Each ribbon cable
should be attached to the appropriate MONITOR OUTPUT connector on the rear of the LTC
8902 Series bays.
The LTC 8809/00 ribbon cables have keyed connectors on each end. Maintain correct
polarity when attaching between system components.
Refer to , page 66 for typical system connections. The LTC 8808/00 panels are typically
installed on the rear of the mounting rack behind the applicable matrix bay. They can be
mounted elsewhere as long as the 2 m (6 ft) LTC 8809/00 ribbon cables can reach the
applicable matrix bay.
NOTE: Rack-mounting screws and associated hardware are NOT included.
5.11.6
System Video Looping Connections
LTC 8808/00 panels are also used to provide looping video outputs from the system. Each
ribbon cable should be attached to the appropriate LOOP connector on the rear of the last
group of LTC 8903 Series bays.
The LTC 8809/00 ribbon cables have keyed connectors on each end. Maintain correct
polarity when attaching between system components.
5.12
Termination Practices
Video from every camera should be terminated with a 75 ohm resistance. Each video line
should be terminated exactly once. If video from a camera is going to several devices, only the
last piece of equipment on the video line should be terminated.
See , page 66 through , page 66 for proper termination practices. Allegiant LTC 8900
systems terminate their video inputs as follows:
5.12.1
LTC 8903 Series Terminations
Each LTC 8921/00 VIM card has DIP switches (S1001 through S1004) for selecting the
termination of each video line. To terminate an input line, make sure that the appropriate DIP
switch on the VIM card is ON. If non-terminated operation is required for looping purposes,
turn the switch OFF.
2015.01 | 10.6 |
Installation Manual
LTC 8900 Series
Bosch Security Systems, Inc.
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