Perception Digital PD-108 - Manual (Page 5)

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to radio communications. However, there are no guarantees that interference
will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
Reorient or relocate the receiving antenna
Increase the separation between the equipment and receiver
Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
Consult the dealer or an experienced radio / TV technician for help.
Keep in mind, modifications not authorized by the manufacturer
may void users authority to operate this device.
If the product suddenly has no response or power off, it may be caused by
electrostatic discharge. If this circumstance, please follow the procedures
below for recovery:
Switch off the unit, if the unit has no response
Turn on the unit again
Introduction