Aiphone GT User Manual

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Aiphone GT Video-intercom System Guide
GT Video-intercom System Configurations
There are two different system configurations, the Standard Configuration for
smaller systems, and the Expanded Configuration for larger systems. The
maximum capacities for each type of GT video intercom system configuration are
compared in the table below.
Maximum Supported Standard
Configuration
Expanded
Configuration
Entrance Stations 5 (3 per trunk)
3 if a door release button
is connected to a direct
select type entrance
station.
16 (8 per trunk)
Tenant Stations per
Sub Trunk Line
N/A 125 (25 per trunk)
Concierge/Security Guard
Stations
2 4
Tenant Stations 48 (25 per trunk)
100 if only the GT-1D and
GT-1M-L monitor stations
are used.
(50 per trunk for GT-1D)
(25 per trunk for GT-1M-L)
500
Stations per Tenant
(other than GT-2C)
4 (2 monitor stations) 4 (2 monitor stations)
4-way Video Junction
Units
6 per trunk N/A
Bus Control Units 1 1 per common trunk line
1 per sub trunk line
GT-2C Master Stations per
Tenant
1 1
Sub-master Stations 3 3
Maximum Supported Modules Table.
PolyEthylene 2 core cable
Two core PolyEthylene (PE) cable that is unshielded, untwisted, and has a PVC
outer protective jacket, a must be used for audio and video distribution wiring for
any GT installation. The most readily obtainable PE cable is 0.9mm. There is a
table in the GT video-intercom installation manual indicating the maximum cable
distances between all GT modules – you should refer to the 0.8mm column in this
table if 0.9mm PE cable is being used in the installation.

Aiphone GT Specifications

General

System Type	Video Intercom System
Wiring	2-wire
Door Release	Yes
Operating Temperature	-10°C to +60°C (14°F to 140°F)
Weather Resistance	IP54
Audio Output	1W
Microphone Sensitivity	-40dB
Speaker Impedance	8Ω