Videx 2291A - ART.316 I 4 WAY VIDEO ISOLATION CARD (for Video Cabinets Only)

CONTROL CABINETS - TECHNICAL MANUAL EN-UK - V.1.3 - 14/07/16
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AUDIO & VIDEO CONTROL CABINETS
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48mm
94mm
ART.316I 4 WAY VIDEO ISOLATION CARD
Video cabinets with the Art.2204N isolation cards (2291V4, 2291V8 and 2291V12) will also include an Art.316I
4 way video isolation card for each Art.2204N.
The Art.316I will protect against shorts or faults on the video connections (+20V, 0V, V1 and V2) to an apartment.
The Art.316I is mounted on top of the Art.2204N isolation card it is associated with. Plug in connections are
used for easy maintenance. There are 4 outputs to connect up to 4 videophones o one card and a set of
‘through’ terminal connections to link more than one Art.316I in series. Each output has a red status LED
which indicates when there is a fault on the output. Two end of line jumpers are located between the 3rd
and 4th output and are used to set the video termination. Only the last Art.316I in line needs to have both
jumpers in the ‘closed’ position.
Art.316I Operation
In standby (on video systems only) a permanent 20Vdc will be present on all +20V inputs and outputs on the
Art.316I. Once a call is made to the apartment the video signal V1 and V2 from the camera will be switched
through the Art.316I to all the V1 and V2 outputs. The video image will only appear on the videophone that
has been called.
Each of the four +20V outputs benets from over current protection (500mA max.). If a short appears on
an output or a fault towards the videophone occurs then the +20V connection on that output will be
disconnected from the main +20Vdc into the card which will allow the other outputs to continue working.
The red LED next to the output will illuminate to indicate that there is a short or a fault on that output.
Art.316I Dimensions