IBM 5155 Manual To Operations page 378

FEDERAL COMMUNICATIONS
COMMISSION RADIO FREQUENCY
INTERFERENCE STATEMENT
WARNING: This equipment has been certified to
comply with the limits for a Class B computing device,
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pursuant to Subpart J of Part 15 of FCC rules. Only
peripherals (computer input/output devices, terminals,
printers, etc.) certified to comply with the Class B
limits may be attached to this computer. Operation
with non-certified peripherals is likely to result in
interference to radio and TV reception.
INSTRUCTIONS TO USER
This equipment generates and uses radio frequency
energy and if not installed and used properly, i.e., in
strict accordance with the operating instructions,
reference manuals, and the service manual, may cause
interference to radio or television reception. It has
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been tested and found to comply with the limits for a
Class B computing device pursuant to Subpart J of Part
15 of FCC Rules, which are designed to provide
reasonable protection against such interference when
operated in a residential installation.
2 Cluster Adapter January 1984