Raymarine DSM300 Depth Sounder Issue - SailNet Community

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Old 07-12-2010
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Raymarine DSM300 Depth Sounder Issue

Hello Fellow Boaties
My C120 is connected to a DSM300 theoretically to obtain and display constant depth data, however the display is intermittent and my $100 Uniden QT206 is more consistent and reliable.
In fish finder mode it is more consistent but I need the data in chart mode.
Does anyone out there use the DSM300 for depth and have they had and resolved this issue.
Please share with me the secret since I can't seem to find out how to change the system to improve data display. When it does display it is accurate.
Andy
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Old 07-12-2010
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Do you have both the Uniden and DSM300 on the same boat? If so, are you using them at the same time? If that is the case, the Uniden may be interfering with the DSM300.
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DSM300 intermittent performance

The Uniden and DSM are separated by about 20 feet. Additionally, I installed the Uniden because of the DSM issue. My "gut" says that there is something inherently wrong with the DSM relay but I just don't know what it is. I have submitted a technical support question to Raymarine, however I was hoping that someone else out in Sailnet world had experienced a similar issue and could enlighten me. However your input is worth merit since I have heard of these sonar modules interfering with one another.
Thanks for the suggestion - I will try again with the uniden turned off.
Regards
Andy
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There are 3 issues with the DSM300, one is that the power supply is critical, it needs 8 amps of clean power at 12 volts, anything less it drops out. Also there was a software update that covered intermittant connections with the C and E series displays. Finally there are a number of units between certain serial numbers that have a solder issue on the backplane PCB of the DSM300 that affects the DC supply and the connection to the transducer.

All of these isues are a fairly quick fix by Raymarine or your local dealer....
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