Raymarine L1250D, Owner'S Handbook Manual

Page: 17 / 246

Chapter 1: Overview 1-1
In
trod
uc
tion
Chapter 1: Overview
1.1 Introduction
This handbook describes the following HD Series Fishfinders:
Raymarine HD Series Fishfinders use the latest processor and sonar
technology for accurate performance and echo detection. Units feature 7" or
10.4" daylight viewable color LCD displays and the Raychart (RC) models
include a full C-Map NT/NT+ Chartplotter.
L770D/RC Plus and L1260D/RC Plus 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.
HD Series Fishfinders feature dual frequency (200 kHz and 50 kHz) operation
and—depending on the transducer installed and conditions—up to 1000 watts
RMS output power and performance from 3 ft (1m) up to 5000 ft (1700 m).
Use the High Speed Bus ( hsb
2
), SeaTalk, and NMEA interfaces to provide an
integrated system with additional devices, such as Pathfinder Plus Radar,
Raymarine Autopilot, and Raystar Wide Area Augmentation System
(WAAS) GPS products.
Connecting an HD Series Fishfinder to an
hsb 2
Series Pathfinder Plus Radar
and to an hsb
2
Series Plus Chartplotter enables fishfinder, radar, and chart data
to be displayed on all three units. Similarly, chart data can be repeated on a
fishfinder-only device from any via
hsb 2
from any other
hsb 2
device with chart
capabilities.
Fishfinder Display Type Display Size Chartplotter Digital Module
L770D Plus
L770DRC Plus Color LCD
Color LCD 7 inch
7 inch No
Yes Yes
Yes
L1260D Plus
L1260DRC Plus Color LCD
Color LCD 10.4 inch
10.4 inch No
Yes Yes
Yes
81213_1.book Page 1 Monday, March 17, 2003 1:14 PM