Cecil,
With that low a price point for the Photo Color Printer, unless you have a
completely weird interface you will not convince the FCC that it is an
industrial-use-only device. Some consumers will want to buy it, so you will
have to test to Class B. If you do a good job of designing the printer, there
should be little or no cost difference between just meeting Class A and easily
meeting Class B. You can expect to spend a little more time in the EMC chamber
to meet Class B...
If you have a 100BASE-Tx Ethernet or 16Mbps Token-Ring interface on the printer,
you may have a struggle getting it down to Class B. If you have a choice of
shielded or unshielded connectors, make provisions for installing shielded
connectors and for tying them to chassis ground with a short wide connection:
* Metal standoffs holding the connector face tight against the chassis--
parallel and serial ports.
* Metal tab on the connector shield clamped to the chassis with a metal screw--
USB, IEEE 1394.
* A strip of copper tape if you have no other options, but manufacturing folks
hate this because they cut their fingers
on the sharp edges of the tape.
John Barnes Advisory Engineer
Lexmark International
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