Multi-entry video system
In case of multi-entry video system, the additional system elements are as follows: 4-input video signal
switcher OP-VP4, video signal distributors OP-VR4, video monitors OP-VM. Video lines from each panel
should be connected to the switcher OP-VP4, that is equipped with four inputs. Selection of proper input
depends on the channel number of module OP-H4, to which a given panel is connected, thus panel video
signal in the channel:
K0 (module OP-H4MS) should be connected to input CAM1(+ -) of switcher OP-VP4
K1 (module OP-H4MS) should be connected to input CAM2(+ -) of switcher OP-VP4
K2 (module OP-H4MS) should be connected to input CAM3(+ -) of switcher OP-VP4
K3 (module OP-H4MS)) should be connected to input CAM4(+ -) of switcher OP-VP4
It is recommended to use telephone twisted pair of cross-section >0.5 mm
2
.
To enable switching the output signal of video distributor depending on which panel the dialling is
performed from, switcher OP-VP4 and communication module OP-H4 are equipped with communication
line (PK, GND), that need to be connected according to diagram (illustration 24). More information
concerning connection of the panel to distributor and its configuration can be found in
„OP-VP4 4-channel
video signal switcher - installation manual”.
Video output signal from switcher is supplied to the distributors
using the same method as in case of single-entry video system.
Dialling each handset (video monitor) is possible from any panel. If dialling a handset from one of the
panels should take place during the talk from other panel, user will be notified about the line occupancy
with the message "Line busy". If during a talk with a handset numbered X, the said handset is dialled from
other panel, the handset receiver will generate acoustic signal informing about awaiting call. If tenant
49
Figure 23: Multi-entry video system
Summary of Contents for OPTIMA SL255
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