Fcc and doc statement on class b, Notice – DFI ES121-LR User Manual
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FCC and DOC Statement on Class B
This equipment has been tested and found to comply with the limits for a Class B 
digital device, pursuant to Part 15 of the FCC rules. These limits are designed to 
provide reasonable protection against harmful interference when the equipment 
is operated in a residential installation. This equipment generates, uses and can 
radiate radio frequency energy and, if not installed and used in accordance with 
the instruction manual, may cause harmful interference to radio communications. 
However, there is no guarantee that interference will not occur in a particular 
installation. If this equipment does cause harmful interference to radio or televi-
sion 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	the	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.
Notice:
1. The changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
2. Shielded interface cables must be used in order to comply with the emission
limits.
