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Installation and Operation
IN1502 • Installation and Operation2-2
Mounting the Scaler
UL rack mounting requirements
The following Underwriters Laboratories (UL) requirements pertain to the safe
installation of the IN1502 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 IN1502 in an environment compatible with the maximum
ambient temperature (Tma = +113 °F, +45 °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).
Tabletop/desktop placement
For tabletop or desktop placement only, install the self-adhesive rubber feet/pads
(provided) onto the four corners of the bottom of the enclosure.
Rack mounting
1. If feet were installed on the bottom of the IN1502, remove them.
2. Place the IN1502 on one half of the 1U (one unit high, one unit wide) rack
shelf (part #60-190-01 or #60-604-01). Align the front of the IN1502 with
the front of the shelf, and align the threaded holes on the bottom of the
IN1502 with the holes in the rack shelf.
3. Attach the IN1502 to the rack shelf with the two provided 4-40 x 3/16"
machine screws. Insert the screws from the underside of the shelf, and
securely fasten them into diagonally-opposite corners.
See the following illustration.