CDG 7000-75-10 Demonstration setup for IEC 60601-1-2 Close proximity testing
Demonstration of the CGD 7000-75-10 being used for close proximity testing to the IEC 60601-1-2 requirements. This test references IEC 61000-4-39, in which the system is fully capable of meeting the full requirements and levels.
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The IEC 60601-1-2 standard is the international standard for testing medical equipment to EMC. The latest update adds a new test as more transmitter products are present in homes, offices (locations where medical equipment may be used), and hospitals. Three frequencies that are in use are: 30 kHz, 134.2 kHz, and 13.56 MHz. The standard IEC 61000-4-39 for testing fields in close proximity is referenced for this testing. With our IEC 60601-1-2 setup these test fields can be produced.
Requirements: IEC 60601-1-2 Test Frequency 30 kHz 134,2 kHz 13,56 MHz Modulation Continuous-wave Pulse modulation 2,1 kHz Pulse modulation 50 kHz Immunity Test Level (A/m) 8 65 7,5 Requirements: IEC 61000-4-39 Frequency range 9 kHz to 150 kHz 150 kHz to 26 MHz Level Test field strength (A/m) Test field strength (A/m) 1 1 0,1 2 3 0,3 3 10 1 4 30 3 X Special Special Modulation Amplitude modulation Pulse modulation Frequency 1 kHz 2 Hz, 1 kHz Parameter 80% 50% duty cycle The magnetic loops are specified in IEC 61000-4-39 and are readily available. However, producing a field through the loops might not be straightforward. The loop impedance changes over its frequency range and the amplifier being used will not match this impedance. The result would be a much higher power requirement. In this case, we are not covering a frequency range but individual frequency points. This allows a matching network to be created to match the loop to the amplifier's impedance.
