A-8
Electromagnetic Compatibility
•IEC61000-4-6:2008 Immunity to RF conducted line disturbances. 10 V, 1 kHz 80% AM from
150 kHz to 80 MHz.
•IEC61000-4-8:2001 Power frequency magnetic field immunity. 80 A/m. 50/60 Hz.
•CISPR 11:2009: Industrial, scientific and medical (ISM) radio-frequency equipment - Elec-
tromagnetic disturbance characteristics - Limits and methods of measuremen.t Class B
• IEC61010-1:2001 Safety requirements for electrical equipment for measurement, control and labo-
ratory use - Part 1: General Requirements.
United States
In the United States of America, the Model 2221 complies with he FCC Part 15 regulations as follows:
• Conducted and Radiated Emissions meet Class B limits.
EMC Test Configurations
The Model 2221 was tested with 40 dB Gain, Z weight and with the microphone bias set to 200V.
The reference orientation is with the microphone facing the emissions/immunity antenna.
The following accessories are connected during testing: 2559 microphone, PRM902 preamplifier,
EXA010, and External power from a PSA017 AC to DC power adapter.
The setting and configuration for greatest radio-frequency emissions and mode of operation that
produce minimum immunity to power-and radio-frequency fields is Z weight, 40 dB Gain with all of
the accessories listed above connected.
No degradation in performance or loss of functionality was found following the application of
electrostatic discharges.
The method of mounting the instrument for acoustic testing is with the microphone on a tripod.