Tait International Limited TBCK4B Manual Do Utilizador

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DRAFT 4 
32
General Safety and Regulatory Information
TB9400 Installation and Operation Manual
© Tait Electronics Limited September 2011
2.2.4
Anti-tampering Devices
All network elements should be physically secured, where possible. This 
includes the use of locked cabinets and the use of seals on connectors.
All network and audio connectors should be sealed with the stick-on type 
of seal. The purpose of the seals is to detect unauthorized tampering. The 
seal should reveal if any of the connectors have been unplugged or if any 
unauthorized equipment has been plugged in.
The seals must be difficult to remove without breaking, and must bridge 
between the cable and equipment side (plug and socket) of the connection.
Seals must cover any unused network or audio sockets. This includes the 
Ethernet connector on the rear panel, any spare switch ports, and the 
console port on the router and switch.
The seals must be difficult to reproduce. A sticker initialed or signed by the 
technician should satisfy this.
Seals must be replaced if they need to be disturbed during maintenance.
2.3
Environmental Conditions
2.3.1
Operating Temperature Range
The operating temperature range of the equipment is – 22°F to + 140°F 
(– 30°C  to  + 60°C)  ambient  temperature. Ambient temperature is defined as 
the temperature of the air at the intake to the cooling fans.
2.3.2
Humidity
The humidity should not exceed 95% relative humidity through the 
specified operating temperature range.
2.3.3
Dust and Dirt
For uncontrolled environments, the level of airborne particulates must not 
exceed 100 µg/m
3
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