User guide

XTRA Series Power Ampliers • References 18

Rack mount 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

operating temperature has been exceeded, (see “Front Panel Features and Operation”

on page 4).

XPA ampliﬁer pairs can be mounted side-by-side in a single 1U rack. When XPA ampliﬁers

are mounted above or below other non-XPA devices that may generate signiﬁcant heat,

allow for open space as needed between the XPA and non-XPA devices.

XPA ampliﬁers can also be arranged one pair-on-top-of-the-other and stacked in a rack

without an open space between them. Up to four pairs of ampliﬁers may be stacked in a

typical installation before requiring a vent space between other sets as illustrated below.

NOTE: Additional units or pairs may be added to a stack of four pairs depending on the

frequency and typical power output levels of the ampliﬁers during operation.

Monitor the OverTemp LED to verify whether additional stacked units will work

for a given installation.

Vent Space

Figure 9. Ventilation Spacing in a Typical Rack Mounting