150 Series

45 Series

41 Series

35 Series

Description

Accessories

Files

Parts

FAQs

MD150 Digital Depth, Speed and Temp 4.25 Inch square instrument capable of reading to depths from 400 Feet, Meter or Fathoms, Speed in tenths and hundredths from 0.0 to 50 Knots or MPH and Water Temp from 32 to 99F or C. Has NMEA output that can be connected to the RP150 NMEA repeater for dual station operation off transducers. NMEA output can also be connected to any STANDARD HORIZON GPS to show depth, speed and temperature information on the plotter display. MD150 MULTI-DATA Two instruments in one! The MD150 features a bold two-line display of depth and speed log functions in a rugged compact case. As a depth sounder the MD150 range is 400 feet, or equivalent fathoms or meters. Shallow, deep and anchor alarms may be conveniently set. Prop or keel offset is part of the setup. Most importantly, a unique depth algorithm provides unmatched depth finding stability and reliability. As a speed log the MD150 is loaded with features. The Multi-data displays speed to 50 mph, knots or kph. The MD150 features a permanent log, trip log and trip time, up and down counters. Additionally, seawater surface temperature can be displayed in degrees C° or F°. GREAT DISPLAY The MD150 features a high contrast LCD display with big bold digits that are easy to read in any light condition. A rugged non-corrosive case features a curved lens that reduces glare. Backlighting optimizes night viewing. UNCOMPLICATED INSTALLATION Installation is a breeze without the use of special tools. The full range of 150 SERIES square 4-inches instrument flush mounts for custom looking installations. The case protrudes less than 1 inch from the bulkhead and only 1-inch into the surface. Of course, the MD150 instrument outputs reliable NMEA data, for interface with repeaters and other electronics.

Model
Depth Transducers & Hardware
DST51	Transom Mount
DST52A	Puck Shape, Long Stem Bronze Thru -Hull
DST53	Flush Mount Bronze Thru-Hull
DST55A	In-Hull with Well Housing
FB52A	Fairing Block for DST52A
Installation Hardware
EX345	15 Speed Log Extension Cable
EX345D	15' Depth Extension Cable
Rain/Dust Covers
DC150	Dust Cover
Speed Impeller
SIA51	Transom Mount
SIA53	Self Sealing Nylon Thru-Hull

Marine \ Owners Manuals \ Instruments       MD150 Owners Manual  ( 751.19 KB )

Model	Description		List
064025016A	Rear case		N/A
108013023A	Panel Gasket		N/A
DC150	Dust Cover		N/A
HI0005027A	Backlight, LED		N/A
HU1009004A	Microprocessor		N/A
IM00	LCD		N/A

There is no speed reading

The paddlewheels can be damaged by being knocked (eg running aground). Damage may not be apparent to initial inspection. 1) Check the paddle wheel to ensure that it is free and spinning. 2) Check to make sure all the blades of the paddlewheel are in tact.. Replacement paddlewheel kits are a standard spare part and most dealers keep a few paddlewheel kits in stock. You need to specify whether the paddlewheel to be replaced is a transom mount or a through hull type as the two paddlewheels are different. Paddlewheels are easy to remove/install.

The speed reads low, or speed readings erratic

The transducer was installed incorrectly. The spokes on the paddlewheel are sloped in one way, and the transducer must be installed so that the spokes of the paddlewheel are facing forward to catch the water as it flows past. The speed transducer must be installed in a position on the boat where it will receive a clean water flow that is free from turbulence. Preferably it should be in a section of the boat, which is flat and smooth. The paddlewheel must not be behind any other transducers, especially the depth transducer and in powerboats should not be in line with any which might cause turbulent flow onto the transducer. Additionally, in yachts the speed transducer must be mounted as close as possible to the centerline. The further off the center line the paddlewheel transducer is the greater the variation will be experienced in boat speed reading from one tack to the other tack.

My MD150 Multi has very erratic speed

There are two possibilities here. The first is that the paddlewheel in the transducer has been physically damaged and that one or both of the magnets in the blades are missing or damaged. The solution for this is to replace the damaged paddlewheel - please specify if your paddlewheel is through hull or transom mounted. The second possibility is that MD150's with software Version 3.1 have a bug which may cause erratic speed. When you apply power to an MD150 it identifies the software version briefly on the screen (typically Version 3.1, 3.2 etc.) before going to normal operations. If you have a unit with Version 3.1 software, then simply return it for a software upgrade under warranty.

Erratic depth readings

There can be several causes for erratic depth readings. If the readings become erratic only when running the engine(s) or when the boat is moving the cause could either be interference from the engine(s) or cavitation. Also, poor bottom conditions can interfere with good depth readings.

Depth reading is constantly cycling up and down

Most likely the unit is in the simulation mode. To verify this unplug the transducer, if the depth sounder continues giving these readings then refer to the owners manual in order to remove the unit from the simulation mode. If there are no instructions present please contact technical support for assistance.

Can I run two displays from one transducer?

Yes, as long as the depth sounder has an NMEA output. This will allow the depth information to be sent to a repeater. For example the DS150 depth sounder has NMEA output and can be used in conjunction with an RP150 repeater.

Can't I just put a splitter on the transducer cable to run two displays?

Transducers are "balanced" devices and are very sensitive to changes in impedance. If a splitter is installed the impedance is altered too severely and the transducer is no longer capable of operating.

How do I turn the power on and off on my depth instrument without having to disconnect it from the battery?

In a typical wiring situation the instruments are wired directly to an accessory panel or breaker. When power to the boat is turned on the instruments are designed to turn on automatically as well, making an on/off switch on the instrument unnecessary. It is possible to wire in an external on/off switch in-line if access to an accessory panel or breaker is not available.