Raymarine L1250DRC, Owner'S Handbook Manual

Page: 4 / 246

iv HD Series Fishfinders
EMC Conformance
All Raymarine equipment and accessories are designed to the best industry
standards for use in the recreational marine environment.
The design and manufacture of Raymarine equipment and accessories
conform to the appropriate Electromagnetic Compatibility (EMC) standards,
but correct installation is required to ensure that performance is not
compromised.
Preface
This handbook describes the following Raymarine HD Series Fishfinder
systems:
• L770D Plus 7" Color LCD Fishfinder Display with DSM250 Digital
Sounder Module
• L770DRC Plus 7" Color LCD Fishfinder and Chartplotter Display with
DSM250 Digital Sounder Module
• L1260D Plus 10" Color LCD Fishfinder Display with DSM250 Digital
Sounder Module
• L1260DRC Plus 10" Color LCD Fishfinder and Chartplotter Display with
DSM250 Digital Sounder Module
The combined Fishfinder/Chartplotter display units include a cartridge holder
assembly that contains two slots for C-MAP NT or NT+ chart cards.
Digital Sounder
HD Series Fishfinders come packaged with a DSM250 Sounder Module,
which provides
digital echo sounder image data via hsb
2
. The DSM250 digital
bandwidth filter adjusts the receiver band width dynamically from very wide
to very narrow, as required by the actual water and seabed conditions. This
provides superior fish discrimination and bottom structure details in
conditions where other fishfinders, which have a fixed bandwidth, see very
little or nothing at all. The DSM250 employs a very high transmission
repetition or “ping” rate which, along with the digital adaptive high sample
rate receiver, ensures that the entire water column is presented in superb detail
and optimal color allocation.
This handbook contains very important information on the installation and
operation of your new fishfinder system. To obtain the best results in operation
and performance, please read this handbook thoroughly.
81213_1.book Page iv Monday, March 17, 2003 1:14 PM