Disconnect the supply voltage from the unit.
Clearly mark the equipment to prevent its further operation.
2.5 Mounting the Unit
SecureSync units can be operated on a desktop or in a rack in a horizontal, right-
side-up position. The location needs to be well-ventilated, clean and accessible.
Caution: For safety reasons the SecureSync unit is intended to be
operated in a HORIZONTAL POSITION, RIGHT-SIDE-UP.
The SecureSync unit will install into any EIA standard 19-inch rack. SecureSync
occupies one rack unit of space for installation, however, it is recommended to
leave empty space of at least one rack unit above and below the SecureSync unit
to allow for best ventilation.
Rack mounting requirements:
The maximum ambient operating temperature must be observed. See
"Mechanical and Environmental Specifications" on page32 for the oper-
ating temperature range specified for the type of oscillator installed in your
SecureSync unit.
If the SecureSync unit is to be installed in a closed rack, or a rack with large
amounts of other equipment, a rack cooling fan or fans should be part of
the rack mount installation.
Installation of the unit in a rack should be such that the amount of air flow
required for safe operation of the equipment is not compromised.
Follow the mounting directions described below to prevent uneven mech-
anical loading, possibly resulting in a hazardous condition.
Do not overload power supply circuits. Use only supply circuits with
adequate overload protection. For power requirements, see "Input Power"
on page24.
Reliable grounding of rack-mounted equipment must be maintained. Par-
ticular attention must be given to supply connections other than direct con-
nections to the branch circuit (e.g., use of power strips).
48
CHAPTER 2 • SecureSync 2400 User Manual Rev. 5.2
2.5 Mounting the Unit
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