ReefMaster: Maximum sonar file duration (1/1)

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TOPIC: Maximum sonar file duration

Maximum sonar file duration 10 years 3 months ago #7518

Go Offline	I could browse “.sl2” sonar data which duration was over 24h on ReefMaster (Ver. 1.8.35), but I couldn’t browse long “.slg” data over 24h on the same environment. Does ReefMaster have a function to deal with long duration “.slg” files, or is there any plan to add such function? I would like to browse files of maximum a week length.
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Maximum sonar file duration 10 years 3 months ago #7519

Matt Offline	ReefMaster doesn't treat long sonar files any differently to short ones, but I can well imagine that there may be a number of issues with files as long as yours. Certainly, we've never tested anything of that length - we would consider 3-4 hours as "long". Can I ask what the file-size is for these 24 hour files?
	Last Edit: 10 years 3 months ago by Matt. The administrator has disabled public write access.

Maximum sonar file duration 10 years 3 months ago #7525

Team Colibri Offline	And please, how do you get your files so long? I would have to refuel my boat at least 20 times to have it running a full week.
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Maximum sonar file duration 10 years 2 months ago #7532

Go
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Thank you for replying my inquiry. Maximum size of our files is approx. 2GB. (The upper limit of file size seems to be limited to 2GB by file system of Lowrance HDS.) As an example, when data size per soundings is 800B / ping, recording duration of 2GB “.slg” file is approx. 128h and total number of pings are 2,465,062. In the case of same size “.sl2”, when 800B / ping, duration is 46h, total pings are 758,113.

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Maximum sonar file duration 10 years 2 months ago #7533

Go Offline	We are using HDS on fixed raft to observe behavior of farmed fish. It is powered by solar cells, no need to fuel.
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Maximum sonar file duration 10 years 2 months ago #7536

Matt Offline	That's an interesting use of sonar! Unfortunately I think there are always going to be issues with very large files, and I'm surprised actually that you are even able to record a full week's worth. It would be nice if there was some way to automatically record new files every n hours, but I don't know of any way to do this - and from the sound of the setup this would be hard to do manually.
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Maximum sonar file duration 10 years 2 months ago #7550

Go Offline	I also think for long time-span observation it is best way that automatic file generation by appropriate file size, but there isn’t such function on HDS. I hope long duration browsing will be realized on ReefMaster in near future improvement. Thank you.
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Maximum sonar file duration 10 years 2 months ago #7567

Team Colibri
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Matt wrote:

That's an interesting use of sonar! Unfortunately I think there are always going to be issues with very large files, and I'm surprised actually that you are even able to record a full week's worth. It would be nice if there was some way to automatically record new files every n hours, but I don't know of any way to do this - and from the sound of the setup this would be hard to do manually.

There is. At least on Simrad NSS Evo2. It will stop and restart about once every hour. I guess HDS Gen 3 has this as well, but I have not tried it myself.

www.dybdekart.no/
teamcolibri.blogspot.no/

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Maximum sonar file duration 10 years 2 months ago #7587

Go Offline	Thank you very much for useful information. Unfortunately, my HDS is Gen 2...
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