Emc Conformance - Raymarine DSM25 Owner's Handbook Manual

8
If the transducer cable is accidentally removed while the DSM25 is
powered on, remove power from the sounder module, replace the
transducer cable, and then return power to the module. As a
safety feature, the DSM25 only recognizes that the transducer is
connected at power-up.
CAUTION:
The transducer transmits high frequency energy while in use. The
unit should be turned off when swimmers or divers are in close
proximity to the transducer. (There is a lack of scientifically sound
standards or guidelines for exposure levels and limits to
ultrasound. This notice is precautionary only.)

EMC Conformance

All Raymarine equipment and accessories are designed to the best industry
standards for use in the recreational marine environment.
Their design and manufacture conforms to the appropriate Electromagnetic
Compatibility (EMC) standards, but correct installation is required to ensure that
performance is not compromised. Although every effort has been taken to ensure
that they will perform under all conditions, it is important to understand what
factors could affect the operation of the product.
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 performance within the
constraints imposed by any location, always ensure the maximum separation
possible between different items of electrical equipment.
For optimum EMC performance, it is recommended that wherever possible:
• Raymarine equipment and cables connected to it are:
• At least 5 ft (1.5 m) from any equipment transmitting or cables carrying
• More than 7 ft (2 m) from the path of a radar beam. A radar beam can nor-
• The equipment is supplied from a separate battery from that used for engine
start. Voltage drops below 10 V and starter motor transients can cause the
equipment to reset.
This will not damage the equipment, but may cause the loss of some informa-
tion and may change the operating mode.
Ultrasonic Energy
radio signals, e.g., VHF radios, cables and antennas. In the case of SSB
radios, the distance should be increased to 7 ft (2 m).
mally be assumed to spread 20 degrees above and below the radiating
element.
DSM25 Owner's Handbook