Garmin GPSMAP 235 Sounder User manual

GPSMAP235Sounder
GARMIN Innovation Above And Below The Surface
Crisp, 4-level grayscale display and GARMIN’s exclusive See-ThruTM
technology separates black fish returns from the light gray returns
of thermoclines and structure.
One-touch instant zoom rescales entire screen, while 2X and 4X
oversampling provides greater detail of the bottom.
Innovative split screen displays GPS cartography and sounder
data simultaneously.
Graphic whiteline display with Depth Controlled Gain (DCGTM)
feature always presents a clear image of bottom hardness, structure,
and thermoclines not found in other fishfinders.
Excellent sounder dynamic range for viewing weak signals in the
presence of strong signals.
The GPSMAP 235 Sounder offers the advantage of an innovative
depth sounder and the proven performance of GARMIN GPS chart-
plotting in a single, easy-to-use package.
GARMIN’s 235 depth sounder is packed with a combination of
features you won’t find in any other sounder. Dual frequency operation
gives you the clearest possible image in both deep and shallow water.
Powerful noise rejection effectively removes the most stubborn cross
talk and interference. 24 square inches of active viewing area gives
you sizeable detail coverage. A variable zoom window allows you to
view increased detail at the touch of a button. You can even mark
underwater waypoints to capture the position and depth of objects
like reefs, dropoffs or hazards, to permanently store them for future
use. Combine these innovations with a wide range of additional
advanced features, and it’s easy to see that the GPSMAP 235 Sounder
is designed to give you all the information you need.
If having the best depth sounder on the market isn’t enough, add
navigational guidance that is second to none. The GPSMAP 235 Sounder fea-
tures GARMIN’s high performance 12 parallel channel GPS receiver for
unmatched accuracy and G-chartTM digital cartography for chartplotting on
inland or offshore waters.

GPSMAP 235 SOUNDER
GPSMAP235Sounder
M01-10058-00REV0598
Depth Sounder Features
Display Options: Auto Bottom Tracking, Auto Ranging,
4 Zoom Levels, Split Screen Feature,
and 3-Level Fish ID
Alarms: Fish and Shallow/Deep Water
Physical
Size: 7.5" H x 7.7" W x 2.6" D
(19.1 x 19.6 x 6.6 cm)
Weight: 2.0 lbs. (.908 kg)
Display: 7.1" diagonal (18.4 cm)
high-contrast, 4-level gray LCD
with backlighting (160 x 240 pixels)
Case: Fully gasketed, high-impact plastic alloy
Temp. Range: 5º F to 158º F (-15º C to 70º C)
Accessories
Standard: GPS 235 Chartplotting Depth Sounder
Standard Transom-Mount Transducer**
Remote Antenna with 30' Cable
Power/Data Cable
Surface/Flush Mount Bracket with Knobs
User’s Manual
Quick Reference Guide
Optional: PC Kit
G-chart Cartography Cartridges
Transducers in a wide variety of
transom and through-hull mounts
Specifications are preliminary and subject to change without notice.
* Subject to accuracy degradation to 100m 2DRMS under the United
States Department of Defense imposed Selective Availability Program.
** Also available without a transducer.
Navigation Features
Waypoints:
Total: 250 alphanumeric
Nearest: 9 (automatic)
Proximity: 9 (definable)
Routes: 20 reversible routes with up to
30 waypoints each, plus MOB
and TracBackTM modes
Track Log: Approx. 2,000 points
Map Datums: 106
Coordinates: Lat.lon, UTM/UPS, plus
7 grids, including Maidenhead
Performance
GPS Receiver: Differential-ready 12 parallel
channel receiver tracks all
satelites in view
Depth Sounder:
Frequency: 50 & 200 KHz
Transmit Power: 500 W RMS
(4000 W peak to peak)
GPS Acquisition Times:
Warm: Approx. 15 seconds
Cold: Approx. 45 seconds
AutoLocateTM: Approx. 5 minutes
Update Rate: 1/second, continuous
Accuracy:
Position: 15 meters (49 feet) RMS*
1-5 meters (3-15 feet) RMS
with GARMIN GBR 21
DGPS receiver (optional)
Velocity: 0.1 knot RMS steady state
Dynamics: 6g’s
Interfaces: NMEA 0180, 0182, 0183 and
RTCM 104 DGPS corrections
Antenna: GA 28 Remote Marine Mount
with 30' cable
Plotter/Moving Map Features
Database: Built-in basemap to 64 nm
(32 nm U.S.) with coasts, rivers,
lakes, political boundaries, plus
major cities and highways
Data Cartridges: G-chartTM cartridges with inland
water and Navionics offshore
cartography for seamless,
detailed mapping and
worldwide coverage (optional)
Plotting Scales: 1/8 to 4096 nm with dedicated
push-button zoom control
Power
Source: 10-40 Vdc
Usage: 15 Watts (max)
GARMIN International
1200 East 151st Street
Olathe, Kansas 66062, U.S.A.
913/397.8200 FAX [phone]
GARMIN (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate
Romsey, SO51 9AQ, U.K.
44/1794.519944 FAX [phone]
GARMIN (Asia) Corporation
3rd Floor, No. 1, Lane 45, Pao-Hsing Road
Hsin-Tien, Taiwan
886/2.2917.3773 FAX [phone]
www.garmin.com
© 1998 GARMIN Corporation