I am looking for assistance in determining EMI/EMC requirements for analog
cellular systems (eg AMPS) that employ co-located radio transceivers and
computer based control equipment. Of particular concern is the situation
when the control equipment is located in the same equipment cabinet (rack)
as the transceiver equipment.
Issues are:
1. In situations (such as cellular networks) what is the precedence
between specific system standards (eg EIA/TIA-IS-20) and FCC emission
regulations (eg 15.207, 15.209) ?
2. When intentional radiator equipment is conformance tested against
standards/regulations is it tested as an module (transceiver) or assembly
(rack containing multiple transceivers) ?
3. When a digital device (eg MSC process controller) is installed in
the same rack as intentional radiators what standards/regulations are
applied ?
4. I have been advised that FCC will recognise CISPR 22 and allow
devices meeting this requirement to be sold in the US. Do you know if this
is true and if so, could you advise documentary reference.
5. Are there any specific EMI/EMC standards/regulations being drafted
for telecommunications (particularly wireless) systems ?
Brian Fury
ADI Limited, System Group
