Extron electronic XPA 200170V, XPA 1002 Installation, cont’d, Rack mounting of the amplifier

Installation, cont’d

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 equipment 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).

Rack mounting

The XPA 1002 or XPA 2001 can be mounted in a rack shelf using the optional RSU 129 1U Universal rack shelf (Extron part #60-190-01) or the 1U Basic rack shelf (Extron part #60-604-01), as follows.

1.	If feet were installed on the bottom of the amplifier,
	remove them.
2.	Place the amplifier on one half of the rack shelf. Align the
	front of the amplifier with the front of the shelf, and align
	the threaded holes on the bottom of the amplifier with the
	holes in the rack shelf.
3.	Attach the amplifier 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.

1U Universal Rack Shelf

1/2 Rack Width Front False

Faceplate

Front false faceplate uses 2 screws.

	(2) 4-40 x 3/16"
	Screws
	NOTE: Using screws longer
	than 3/16” will damage the
	unit and void the warranty.
	Use 2 mounting holes on
	opposite corners.
Rack mounting of the amplifier
4.	Attach the false front panel (provided with rack shelf part
	#60-190-01) to the unoccupied side of the rack (as shown
	above), or install a second half-rack-width device in that
	side by repeating steps 1 through 3.

5. Attach the rack shelf to the rack using four 10-32 x ¾" bolts (provided). Insert the bolts through #10 beveled washers, then through the holes in the rack, as shown above.

Rack mounting ventilation recommendations

Excessive heat can decrease the optimal lifetime of the power amplifier. An over temp indicator LED on the front panel of the amplifier lights red whenever the recommended ambient temperature has been exceeded (see "Front Panel Features and Operation" in chapter 3).

To reduce the chances for an over temp condition, the XPA(s) should be arranged in a rack environment so that adequate airflow is available both above and below the XPA whenever possible. No more than two XPAs should be arranged one- on-top-of-the-other in a rack without an open space between them, as shown in the following illustration. An XPA can also be arranged above or below another non-XPA device, but there must be an open space both above and below those devices.

2-4 XTRA Series • Installation XTRA Series • Installation 2-5