GMR 20/40 Installation and Operation Guide
4
Warning and Cautions
CAUTION:
Use the GMR 20/40 at your own risk. To reduce the risk of unsafe operation, carefully review and understand all aspects of
this Owner’s Manual, and thoroughly practice operation using the simulator mode prior to actual use. When in actual use, carefully compare
indications from the GMR 20/40 to all available navigation sources, including the information from other NAVAIDs, visual sightings, charts,
etc. For safety, always resolve any discrepancies before continuing navigation.
CAUTION:
IT IS THE USER’S RESPONSIBILITY TO USE THIS PRODUCT PRUDENTLY. THIS PRODUCT IS INTENDED TO BE USED
ONLY AS A NAVIGATIONAL AID AND MUST NOT BE USED FOR ANY PURPOSE REQUIRING PRECISE MEASUREMENT OF DIREC-
TION, DISTANCE, LOCATION, OR TOPOGRAPHY.
WARNING:
This product, its packaging, and its components contain chemicals known to the State of California to cause cancer, birth
defects, or reproductive harm. This Notice is being provided in accordance with California’s Proposition 65. If you have any questions or
would like additional information, please refer to our web site at http://www.garmin.com/prop65.\
WARNING:
The radar scanner transmits electromagnetic energy. Ensure that the scanner has been installed according to the recommendations
given in this guide, and that all personnel are clear of the scanner, before switching to transmit mode.
Installation Guidelines
The guidelines given here describe the conditions for optimum EMC performance, but it is recognized that it may not be possible to
meet all of these conditions in all situations. To ensure the best possible conditions for EMC performanc,e within the constraints imposed
by any location, always ensure the maximum separation possible between different items of electrical equipment. For optimum EMC perfor-
mance, it is recommended that wherever possible:
• IEC 60936-1 clause 3-27.1 maximum distances from the antenna at which RF (Radio Frequency) levels can be expected.
GMR20 (100W/m squared = 40cm [15.75”]) (10W/m squared = 120cm [47.24”])
GMR40 (100W/m squared = 60cm [23.62”]) (10W/m squared = 175cm [68.90”])
• Mount at least 1 m (3 ft) from any equipment transmitting or cables carrying radio signals e.g. VHF radios, cables and antennas. In the
case of SSB radios, the distance should be increased to 2 m (7 ft).
• Mount other electronics and cables more than 2 m (7 ft) from the path of a radar beam. A radar beam can normally be assumed to
spread 20 degrees above and below the radiating element.
• Electromagnetic Energy. The radar scanner transmits electromagnetic energy. It is important that the radar is turned off and/or DC
power input be disconnected whenever personnel are required to come close to the scanner to perform work on the scanner assembly
or associated equipment.
• It is recommended that the radar scanner is mounted out of range of personnel (above head height). Do not look directly at the antenna
at close range as your eyes are the most sensitive part of the body to electromagnetic energy. When properly installed and operated, the
use of this radar will conform to the requirements of ANSI/IEEE C95.1-1992 Standard for Safety Levels with Respect to Human Expo-
sure to Radio Frequency Electromagnetic Fields.
• Magnetic compass: Mount the scanner unit at least x (TBD) m away from a magnetic compass.
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