Инструкция для EXTRON ELECTRONICS PoleVault Digital Switcher Systems PVS 405D

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Ceiling and wall type (important in assessing the hardware needed)

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Ceiling type: dropped, spline, hard lid, and similar. Structural type (wood, concrete, 
trusses), plenum or non-plenum

• 

Wall type: drywall, cement, brick.

WARNING:  Structural ceiling failure could cause death serious injury or 

death. Check the structural ceiling to ensure that it can handle a load four times 
the weight of the final setup. 

• 

Lighting:

• 

Type and control (important for projector image viewing)

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Ambient light from windows 

Student Desks

Teacher’s Desk

TV / VCR / DVD
Inputs

Screen/White Board
Location

Windows

MLC controller
Location

PVT A/V Wallplate Location

Projector/Switcher
Location

Speaker
Location

Figure 3. 

Example Classroom Installation

Location of the Screen and Projector

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Proposed screen location (normally located at the front center of the room)

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The lowered screen does not cover safety devices, such as fire alarm strobes. 

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Dimensions and type of screen (maximum image size, motorized or hanging screen)

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Proposed projector location 

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Projector aligned with center of the screen and not an obstruction to viewing

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Projector throw distance (maximum and minimum limits to the screen) of the image

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Horizontal offset (horizontal distance from the center of the lens to the center of the 
projector)

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Vertical offset of the projected image (height relationship between the projector and 
the screen).

• 

Projector angle (image projected up, down, or horizontal to screen)

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Power source for the projector: existing and accessible or needing installation

• 

Projector weight: the Universal Projector Bracket (UPB 25) supports a maximum 
weight of 25 pounds.

• 

Viewing obstructions: pillars, furniture and so forth, window locations for glare 
reduction, obstructions between projector and screen.

• 

Overhead clearances (refer to a copy of ADA Standards for Accessible Design, 
Sections 307 and 308, for ADA requirements).

 

PoleVault Digital Systems • Introduction

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