Shure Incorporated
5/15
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①
Power Input
Connects unit to AC power.
②
Exhaust Air Vents
For system cooling.
③
DC Power Outputs
Available on the PA421B and PA421BX models for powering compatible transmitters
④
RF Inputs
PA421B:
Connect up to 4 IEM transmitter outputs
PA821B:
Connect up to 8 IEM transmitter outputs
Installation
Rack Mount Instructions
If installed in a closed or multi-unit rack assembly, the operating ambient temperature of the rack environment may be
greater than room ambient. Keep the rack environment temperature at or below the maximum ambient temperature (Tma)
specified by the manufacturer of the installed equipment.
Provide the proper amount of air flow inside the rack as required for safe operation of the equipment.
Do not create a hazardous condition by mounting the equipment in the rack with an uneven mechanical load.
When connecting the equipment to the supply circuit, consider the effect that overloading of the circuits might have on
over-current protection and supply wiring. Consider all equipment nameplate ratings when addressing this concern.
Maintain reliable earthing of rack-mounted equipment. Give particular attention to indirect supply connections to the
branch circuit (e.g., power strips).