OceanLog beta version 2.1.4 Available

[eliminator]

so, I used my friends download cable to transfer my dives from my Pro Plus 2 to a USB stick. When I got home to view my dives on my own PC, OceanLog would not recognize the files beacuse they were a .txt file. So, my quetion is, how can I convert this file so I can view my dives with the OceanLog program.

thanx

 

[NJMike]

Well, I definitely do not understand the SIT times. For the dives I did on Sunday, there was 1:27 interval between the end of the first dive and the beginning of the second dive. Oceanlog reports 1:21.

Now here's another question - here is an excerpt from the export file for the last two dives:

00:18:30,46 FT,3,0,0-10 FPM,N/A,01:19,0:00,0 FT,46, ,N/A,N/A,N/A,
00:19:00,45 FT,3,0,26-30 FPM,N/A,01:24,0:00,0 FT,46, ,N/A,N/A,N/A,
00:19:30,43 FT,3,0,0-10 FPM,N/A,01:36,0:00,0 FT,46, ,N/A,N/A,N/A,
00:20:00,43 FT,3,0,26-30 FPM,N/A,01:36,0:00,0 FT,46, ,N/A,N/A,N/A,
00:22:30,20 FT,3,0,>30 FPM,N/A,09:59,0:00,0 FT,46, ,N/A,N/A,N/A,
00:23:00,12 FT,3,0,>30 FPM,N/A,09:59,0:00,0 FT,46, ,N/A,N/A,N/A,

The second line, which is a sample taken 30 secs after the first line, shows a change of depth = 1'....but the FPM reported is 26-30 FPM.

The fourth line, sampled 30 secs after the third line, shows no change in depth, but reports an ascent rate of 26-30 FPM. Hmm.

The last line, sampled 30 secs after the line before it, shows a change of 8'. But the ascent rate is reported as > 30 FPM. Eight feet in 30 secs = 16 FPM. Double hmm.

What do I not know? Am I missing something?

 

[bperrybap]

C: SAC rate still shows 0, and yes I have inputted all the required info such as working pressure,( 300 bar ) cylinder size ( 10 litre ) but every dive still shows SAC 0 ,
Mark Lynch

My guess on the SAC rate issue:
Since metric tanks aren't normally rated like imperial in terms
of volume and working pressure, I believe that the
working pressure for Metric should always be 1 BAR.

This is because the cylinder sizes for metric are an empty volume
or the amount of fluid that would fill the tank.
In other words, when the volume of air inside the tank is equal
to the metric volume (10 litre in your case) the pressure inside
the tank would be atmospheric pressure or 1 BAR.
That 1 BAR, would be the equivalent of the imperial "working pressure".

In imperial, tanks are not sized based on the empty volume.
They are sized based on what the volume of air is at a certain
pressure (the working pressure). The working pressure is not
the same as the fill pressure or the maximum pressure rating.
Also, the working pressure is not the same for every tank.
It is an arbitrary pressure. The working pressure is the
pressure inside the tank when the rated volume is achieved.

For example, two different imperial tank sizes may in fact
be exactly the same but be sized differently.
This is because each manufacturer may have
calculated their volumes based on different working pressures.

It is a very messy way of specifying tank volumes.


Personally, I think that the working pressure in metric for
s/w programs should be dropped, because metric tank sizes
aren't specified this way.
They are all normally specified at 1 BAR, and since they are all
specified at the same pressure, the s/w shouldn't make the user
input it since it will always be the same.

Using a working pressure of 300 bar means that you are
getting VERY tiny SAC rate (rounded to 0) because the s/w will
have calculated that you used a tiny amount of air.
This is because, with a working pressure of 300 bar, you have
told the s/w that the volume of air inside the tank is 10 litres
when the pressure is 300 bar, which is definitely not the case.
(The volume of air was 10 litres when the pressure was 1 BAR)

Anyway, I bet if you fill in 1 bar for the working pressure it
will give you a valid SAC rate.

--- bill

 

[Rubman]

Bill,

Your a bloody genius, After 4 months of waiting on Oceanic, I finally have a Figure in the SAC box, however if I was a mouse it might be correct. A typical dive reads;
Start Pressure-293 Bar, end pressure 135.7 Bar, Cyl size 10 litre, average depth 23.4 Meters, dive time 26.5 Min's = SAC rate 0.084 Litres per min, any ideas ??

Mark

 

[cummings66]

What do I not know? Am I missing something?

Is your computer in a console or on your arm? If it's on your arm and you raise it you may end up with a high rate of ascent due to that, even though you didn't really go up that fast.

I know other computers mounted on the arm report the fastest ascent rate as the rate for that period. So if you raised it from lower to higher at some point to read it then that rate may be what you are seeing, not the rate you ascended. Try raising it slowly and see if the rates go back to normal.

 

[Rockbrother]

Hi,
I am getting the following message when running the program:
"You do not have an appropriate license to use this functionality"

I have Vista home basic and installed the usb drivers for the cable.

regards
Wilhelm

 

[NJMike]

cummings66....yes, I do understand that and have already thought about it. But my question is relative to the sampling rate. So, for instance, for discussion purposes, let's say that the DC is set to a sampling rate of 30 secs, and that the first sample is taken at 00:19:00, and that I am vertically stable at 50'.

That means that the next sample would be taken at 00:19:30. But suppose I raised my arm quickly from it's lowest position to as high as I could reach, and then back down to the lowest position, all within a 15 second time range, ending at 00:19:15.

Now, 15 secs later, at 00:19:30, is when the second sample would be taken. But since, at that time, my arm is again at the same depth as when it was at the first sample, wouldn't it show up as no change in depth, and therefore a 0 FPM ascent rate?

This scenario would represent the two middle lines from the export file in my earlier post.

I'm starting to think that the sampling rate has nothing to do with the DC, maybe? Is the sampling rate only for Oceanlog's use???

Doug, any help here would be appreciated...

 

[cummings66]

My understanding of the sampling rate is that the example you just gave would be as you described it.

Looking at your data I wonder if your computer has a problem and not the software? Perhaps Doug could elaborate on the readings a bit more and say if it's normal.

 

[Rockbrother]

Ok I instaaled the Beta on my desktop at work (Win XP sp2) and it is working fine.
The problem must be with laptop or windows vista.

 

[cummings66]

That error message sounds like something Vista would say, in fact I know it's related to Vista and not the program.

Refer to this site and see if it helps you out.

http://support.microsoft.com/kb/200271