HM360 DSC MAX
14
Appendix A – Near Lightning Strike Test
This appendix describes the general procedure for evaluating the immunity to near lightning strikes (NLS) of the HM360
DSC MAX VHF Radio.
The test simulates a slow, high-energy pulse produced by an NLS event.
List of Abbreviations
AE
Auxiliary Equipment
CE
Conducted Emissions
EMC
Electromagnetic Compatibility
EN
European Norm
EUT
Equipment Under Test
FTB
Fast Transient Burst
MED
Marine Equipment Directive
QP
Quasi Peak
Safety
The high voltage interference pulse can contain a very large quantity of energy and every precaution shall be taken to avoid
contact with EUT during a test. It is highly recommended that at least one other person is present (or very close by) during
the test.
Test Configuration
EUT Setup
The EUT shall be setup in a typical system configuration on an isolated wooden bench with NO GROUNDPLANE. The
power to the EUT and auxiliary equipment shall be from 12V or 24V sealed lead-acid batteries via a suitable fuse. The
length of the EUT power cable shall be no more than 2m. Any screens within the system shall be terminated at the battery
–ve connection.
EUT Operating Configuration
All operating configurations should be tested with appropriate performance criteria defined for each test.
