Distribute video and video-line power throughout an Aiphone GT Series multi-tenant intercom system with the Aiphone GT-VBC Video Bus Control Unit.

The GT-VBC serves as the primary video bus controller in a standard GT Series video system, transmitting video signals from compatible entrance and security guard stations to tenant video stations through the GT video distribution network.

Operating from 24VDC, the GT-VBC uses simple 2-conductor Aiphone video wiring and can be configured for either Standard or Expander operation to accommodate different system layouts and extended video-bus applications.

Key Features

• Genuine Aiphone GT-VBC

• Video Bus Control Unit for GT Series

• Supplies power to the GT video line

• Distributes video from entrance stations to tenant stations

• Supports compatible security guard station video

• Designed for use alongside the GT-BC Audio Bus Control Unit

• 24VDC operation

• 0.9A maximum current consumption

• Standard / Expander mode selector

• Uses Aiphone #871802 video cable

• Supports GT-4Z video distribution adaptors

• Surface wall mounting

• DIN rail mounting with optional W-DIN11

• Self-extinguishing ABS construction

• Ideal for apartment, condominium, and commercial multi-tenant systems

Product Specifications

Manufacturer: Aiphone
Model: GT-VBC
Series: GT Series
Product Type: Video Bus Control Unit
Function: Video Signal & Video-Line Power Distribution
Power Requirement: 24VDC
Maximum Current Consumption: 0.9A
Recommended Power Supply: PS-2420UL
Operating Modes: Standard / Expander
Video Wire Type: 2-Conductor, Solid, Non-Shielded, PE Insulated
Recommended Video Wire: Aiphone #871802 Series
Mounting: Surface Wall Mount or DIN Rail
DIN Rail: W-DIN11
Material: Self-Extinguishing ABS Plastic
Color: Middle Gray
Operating Temperature: 32°F to 104°F (0°C to 40°C)
Height: 4-1/4"
Width: 4-13/16"
Depth: 2-3/8"
Approximate Weight: 0.56 lb / 250g

GT Series Video Bus Controller

The GT-VBC handles the video portion of the GT Series common-bus architecture.

Its primary functions include:

• Supplying power to the video bus

• Receiving video from compatible entrance stations

• Receiving video from compatible guard stations

• Distributing video toward tenant stations

• Supporting GT-4Z video distribution adaptors

• Extending the video bus when configured in Expander mode

Used with the GT-BC

In a standard GT Series video system, the GT-VBC works alongside the:

GT-BC – Audio Bus Control Unit

The two controllers perform separate functions:

GT-BC

Handles:

• Audio

• System data

• Control communication

• Audio-bus power

GT-VBC

Handles:

• Video signals

• Video-bus power

• Video distribution

A standard GT Series video installation typically requires both components.

Standard Mode

With the mode selector set for Standard operation, the GT-VBC functions as the primary video bus controller.

Video from entrance or guard stations is routed through the GT-VBC and distributed to compatible video tenant stations.

Expander Mode

The GT-VBC can also be configured as an Expander Video Bus Control Unit.

This mode is used in applicable GT Series layouts to extend the video bus and increase allowable wiring distance.

Aiphone allows up to:

2 GT-VBC units configured as expanders per applicable sub-trunk line

Always follow the current GT Series engineering and installation documentation when designing an expanded video bus.

Extended Video Distance

With proper GT-VBC expansion and approved wiring, Aiphone supports a maximum overall video path of up to approximately:

1,960 ft between an entrance station and tenant station

The exact allowable distance depends on:

• Cable gauge

• Standard vs. expander configuration

• Distribution layout

• Number of GT-VBC units

• Placement of GT-4Z distribution adaptors

Standard System Capacity

A standard GT Series system using the GT-VBC supports an overall architecture of up to:

Entrance Stations

5 Maximum

Up to 3 per applicable trunk from the distribution point.

Tenant Stations

48 Maximum

Up to 25 per applicable trunk from the distribution point.

Security Guard Stations

2 Maximum

Larger GT Series installations require expanded-system components.

GT-4Z Video Distribution

The GT-VBC distributes video through compatible:

GT-4Z – 4-Way Video Distribution Adaptors

Aiphone allows up to:

6 GT-4Z units per residential / tenant video trunk

The GT-4Z requires no separate power supply.

Recommended Video Wiring

The GT-VBC uses:

2-Conductor, Solid, Non-Shielded, PE-Insulated Cable

Recommended Aiphone video wire:

• 87180250C – 18 AWG | 500'

• 87180210C – 18 AWG | 1,000'

• 871802P10C – 18 AWG | Plenum | 1,000'

Audio and video circuits should be run in separate-jacketed cables.

Typical Video Wiring Distances

Aiphone's current GT Series documentation lists approximate GT-VBC video distances based on conductor size.

GT-VBC to Farthest Tenant Station

22 AWG: Up to 330 ft
20 AWG: Up to 490 ft
18 AWG: Up to 490 ft

GT-VBC Standard to GT-VBC Expander

22 AWG: Up to 330 ft
20 AWG: Up to 490 ft
18 AWG: Up to 490 ft

GT-VBC to Power Supply

22 AWG: Up to 10 ft
20 AWG: Up to 16 ft
18 AWG: Up to 16 ft

Always confirm the complete wiring layout before installation.

Power Requirements

The GT-VBC operates from:

24VDC

Aiphone specifies:

PS-2420UL – 24VDC, 2A Power Supply

Maximum GT-VBC consumption:

0.9A

Power-supply quantity and sharing depend on the complete GT Series system design.

Compatible Video Tenant Stations

The GT-VBC supports compatible GT Series video tenant stations including:

• GT-1C7 – 7" Video Tenant Station

• GT-1C7W – 7" App-Compatible Video Tenant Station

• GT-1M3 – 3.5" Video Tenant Station

Audio-only tenant stations communicate through the GT-BC audio bus and do not require video distribution.

Compatible Entrance Equipment

The GT-VBC can distribute video from compatible GT Series entrance equipment including:

• GT-VB – Camera Module

• GT-DMB-N – 3-in-1 Video Entrance Station

• Modular GT video entrance stations

• Compatible direct-select video entrance stations

• Compatible digital-directory video entrance stations

Security Guard Station

Compatible GT systems can include:

GT-MKB-N – Video Security Guard Station with NFC Reader

The GT-VBC provides the video-bus infrastructure required for compatible video communication involving the guard station.

Surface or DIN Rail Mounting

The GT-VBC can be installed directly to an appropriate mounting surface.

For DIN rail mounting, use:

W-DIN11 – 11cm Steel DIN Rail Mounting Bracket

This provides an organized installation when the GT-VBC is mounted with other system equipment inside an accessible low-voltage cabinet.

Typical Equipment Cabinet

A standard GT Series video equipment location may contain:

• GT-BC – Audio Bus Control Unit

• GT-VBC – Video Bus Control Unit

• PS-2420UL – 24VDC Power Supply

• GT-4Z distribution adaptors

• Wiring terminals

• Expanded-system components where required

Expanded System Alternative

For larger installations, Aiphone offers the:

GT-VBX – Expanded Video Bus Control Unit

The GT-VBX is used with the GT-BCXB-N Expanded Bus Control Unit in expanded GT Series architectures.

Do not substitute the GT-VBX for the GT-VBC without confirming the complete system design.

Ideal Applications

• Apartment buildings

• Condominium complexes

• Multi-tenant residential properties

• Commercial office buildings

• Mixed-use developments

• Student housing

• Senior-living properties

• Controlled-access buildings

• GT Series video intercom installations

• Existing GT Series system expansions

Important Ordering Information

This listing is for the GT-VBC Video Bus Control Unit only.

The following are sold separately unless specifically stated:

• GT-BC audio bus controller

• PS-2420UL power supply

• W-DIN11 DIN rail

• GT-4Z video distribution adaptors

• Entrance stations

• Video tenant stations

• Security guard station

• Video wiring

• Audio wiring

• Electric locking hardware

• Other GT Series components

Verify the complete GT Series system configuration and power requirements before ordering.