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Installation and Operation
DVS 304 • Installation and Operation
2-2
Mounting the Scaler
The DVS 304 is 1U high, half rack wide, and is rack mountable. Alternatively, it can
be placed on a table or other furniture. Rubber feet and rack mounting hardware
are included.
The 1U high and full rack DVS 304 A (audio model) can be rack mounted using
included rack/through-desk mounting brackets.
Tabletop/desktop placement
Four self-adhesive rubber feet are included with the DVS 304. For tabletop use,
attach one foot to each corner of the bottom side of the unit and place the unit in the
desired location.
UL guidelines for rack mounted devices
The following Underwriters Laboratories (UL) guidelines pertain to the safe installation of the
DVS in a rack.
1. Elevated operating ambient temperature — If installed in a closed or multi-unit
rack assembly, the operating ambient temperature of the rack environment may
be greater than room ambient temperature. Therefore, install the DVS 304 in an
environment compatible with the maximum ambient temperature
(Tma = +122 °F, +50 °C) specified by Extron.
2. Reduced air flow — Install the equipment in a rack so that the amount of air flow
required for safe operation of the equipment is not compromised.
3. Mechanical loading — Mount the equipment in the rack so that a hazardous
condition is not achieved due to uneven mechanical loading.
4. Circuit overloading — Connect the equipment to the supply circuit and consider
the effect that circuit overloading might have on overcurrent protection and
supply wiring. Appropriate consideration of equipment nameplate ratings should
be used when addressing this concern.
5. Reliable earthing (grounding) — Maintain reliable grounding of rack-
mounted equipment. Pay particular attention to supply connections other
than direct connections to the branch circuit (e.g. use of power strips).