I have a E7D MFD with radar and a P79 (thru hull) transducer. My boat is a Seahunt 234, less than one year old. MFD installed upon purchase. Shortly after we got the boat, I noticed the MFD was picking up a depth  reading intermittenly. Last few times I took the boat out, it displayed no readings. frustrating. We've had no fish finding capability. Yesterday, while I was washing the boat I noticed a reading. Is there something I should look at/for that may be causing a fault.  Thanks

Views: 650

Reply to This

Replies to This Discussion

Welcome to the Raymarine Technical Forum Bernie,

Please note that fishfinders are not designed to return a bottom image or depth value when the hull is out of the water.  Begin by checking the following two items:

  • verify that the transducer reservoir is filled as the transducer is designed to transmit energy through the hull via a fluid medium (typically RV antifreeze)
  • verify that the P79 transducer has been selected within the MFD's transducer configuration settings (HOME->FISHFINDER->MENU->SET-UP->TRANSDUCER SET-UP->TRANSDUCER)
  • verify that the transducer is pinging (an automobile diagnostic stethoscope may be helpful in listing to the transducer)

Transducer location is critical to maximizing the performance of the system.  It is also important to periodically check in-hull transducer reservoir fluid levels to ensure that they are full.  Also, when operating in depths greater than 180', the 50kHz frequency is recommended.

From a performance standpoint, properly installed thru-hull transducers will typically deliver the best performance.  The performance of in-hull transducers may be as much 20% lower than a thu-hull of similar transmitting element design.  As hull designs, materials, thickness, and other factors differ, performance of in-hull transducers will vary between boats.

In order to install an in-hull transducer, the following minimum hull requirements must be met:

  • the hull must be constructed of solid, non-cored fiberglass in the location where the transducer will be installed.
  • the hull must additionally be less than 1" thick in the location where the transducer will be installed
  • the hull must not feature hull aerating steps (if so, the transducer must be located forward of the step.  Owners must recognize that such an installation location may cause the section of the hull below the transducer to loose contact with the water when the hull lifts while operating at high speed)

Before bonding the transducer reservoir to the hull's inner surface, it us recommended that this location be tested first.  In choosing the transducer mounting location, it is recommended that baseline performance of the fishfinder/transducer be established with the transducer held over the side of the vessel while the vessel is stationary and in water having a depth of at least 30'.  Suspending the transducer in this manner can also be used to test to operation of the DSM.  A series of snapshots of the fishfinder's image should be taken as a baseline to then compared the performance of proposed transducer installation location(s) while trolling, while on plane, and at high speed.  One would then rest the transducer on a ZipLock bag which has been filled with water (purge all air) and temporarily placed on the inside of the hull in the area where the transducer performance will be tested.  Transducer site testing should be performed while the vessel stationary, trolling, and when on plane until the best transducer installation location is determined.  After testing has been completed and the best installation site determined, then the transducer reservoir may be fastened to the inside of the hull per the transducer installation instructions.

Reply to Discussion

RSS

Events

Videos

  • Add Videos
  • View All

Photos

Loading…
  • Add Photos
  • View All

Latest Activity

Andrew Mylander updated their profile
Jan 14
Randy Martin updated their profile
Jan 9
Marc Macot updated their profile
Jan 9
Humberto Ferman replied to gerald stapp's discussion Connecting Raymarine c127 to Airmar B60 transponder
"Hello., I have more or les same situation. I have a B60 transducer from Raymarine (E66085) and I want to use it with my c127 MFD. Should I just only get the adapter E66066 and plug it.?"
Jan 6
John T. Cox replied to Andre Chenier's discussion ST6002 vs ST6000+
"I have the inverse situation.  I have a ST6002 with an S2G course computer,  and I found an ST5000+ head unit in the back room that I'd like to use for a second station by connecting via seatalk.   Is that possible?   Thanks…"
Jan 6
Richard H Wheeler liked jeff hesse's discussion S1000 autopilot
Dec 3, 2016
Josh Pekar replied to Kevin Linder's discussion Cameras for e125
"I am also able to access other non-raymarine hardware through the MFD's WiFi by also assigning them within the same static IP range i.e. I can access my NVR.   Now you have a WiFi access point whenever your MFD is running.  Neat!"
Nov 17, 2016
Josh Pekar replied to Kevin Linder's discussion Cameras for e125
"Update on how to get 3rd party IP cameras to work with Raymarine settings that worked for me. 1. Must set static IP for camera in the range of 10.0.1.X** 2. Set Subnet of camera as 255.0.0.0, Gateway and DNS as 10.0.1.1 3. Disable ONVIF…"
Nov 16, 2016
Steve Battel updated their profile
Nov 16, 2016
John updated their profile
Nov 9, 2016
skipbern updated their profile
Nov 3, 2016
No Name updated their profile
Oct 27, 2016
Joe Shabbott liked Moderator - Raymarine, US's discussion Interfacing a Raystar 130 GPS Sensor to an E-Series Widescreen MFD (E90W, E120W, E140W)
Oct 23, 2016
Richard Anderson updated their profile
Oct 3, 2016
Mark noe updated their profile
Sep 12, 2016
Phil Niles updated their profile
Sep 12, 2016

© 2017   Created by Moderator - Raymarine, US.   Powered by

Badges  |  Report an Issue  |  Terms of Service