OK, I have read all these fora, read the QSG, and read a few other things. The more I read about Speed Genie in the GW-60 the more confused I get. Decrepit's posts are really helpful, but I am still not "there" yet.
I want to use the GW-60 for windsurfing as a VERY simple GPS device.
1. Reset all the log data.
2. Start GPS.
3. Read actual speed continuously while out on the water.
4. At end of a session, read the top speed and distance obtained for that session.
5. Stop GPS.
6. Reset all the log data.
7. Repeat for the next session.
Very simple. I don't need alphas or anything else. I don't plan to upload data. Just the 7 things above. Simple.
Here are my settings:
LOGGING 1Hz. This is obvious. It will log at the rate of 1 once per second when it is recording above MIN SPEED.
MIN SPEED zero. This will collect log points at all speeds until I turn off GPS.
AVG MSEC is 5S.
AVG NSEC is 2S.
SPD GENIE is zero. I think this means it will display ACTION SPD without scrolling any other screens.
ACTION SPD is SPEED. This displays actual speed at a 5 Hz rate, correct?
If I set ACTION SPD to NSEC (2S), does it display my actual speed averaged over 2 seconds? Is this correct?
RSLT 1A/1B is set to MSEC TOP.
RSLT 2A/2B is set to NSEC TOP.
RSLT 3A/3B and 4A/4B is both set to X, which means they do not display at all.
RSLT DIST is ON
RSLT TIME is X
I think all this means it will display MSEC TOP speed, NSEC TOP speed, and distance. However, if I have set SPD GENIE to zero, will these display at all? Or does it stay only on ACTION SPD without scrolling? Do I need to set SPD GENIE higher so that they will display after I have stopped sailing to read them? Would something like 5 be a reasonable setting for SPD GENIE?
Please guide me on this stuff.
Thanks in advance.
Hmmmmmmmmm, I'm a bit fuzzy on action speed myself, I just have it set to "spd"
Yep, that is a bit strange, I've never had speed genie set to "0" so I can't be sure what will happen. It's got to go below the setting to know when a new run starts. It's very hard to go below zero, how do you do negative knots? So I suspect this will disable speed genie. In that case what will show in the split screen? The bottom pane normally shows the best speed since reset and the top pane, the last run.
If you don't want the split screen, put the same setting in both panes, that gives you a single large display.
ie.
1A/B MSEC/MSEC.
That will just give you the last run.
But if you want, last run and best run, go with your settings, but put some low number in speed genie, 5kts seems reasonable
Thanks, Decrepit,
You said:
"If you don't want the split screen, put the same setting in both panes, that gives you a single large display.
ie. 1A/B MSEC/MSEC. That will just give you the last run."
My question is: RSLT 1A/1B MSEC/MSEC will you you WHAT of the last run? Top MSEC speed? Or overall session MSEC average?
Thanks
I think it will just give you the last run, the last run depends where speed genie is set. It starts as you exceed speed genie and stops when you go under it. So set to 5kts it should give you all your time planning.
My advice is to experiment, take it for a bike ride, or something.
Thanks. Yes, I have been taking it out on runs. Setting SPD GENIE to 3 (mph) is pretty good. Above 3mph it shows actual speed, below 3mph it scrolls through the RSLT screens. Seems to be good.
I did set the LOGGING to 5Hz so that the MSEC of 2S will take an average over the last ten points.
OK, I think I got it figured out. I did a bunch of testing on a bike and running/walking. These settings seem to work well for what I want to do with the GW-60 for windsurfing/windfoiling.
AVG NSEC is set to 2S. AVG MSEC is set to 5S.
LOGGING is set to 5HZ so that the NSEC 2S will take the average of 10 points, and MSEC 25 points. Note that the 5HZ log occupies more memory than 1HZ.
MIN SPEED is set to zero so that logging is performed whenever the GPS is turned on, regardless of speed. Logging stops when the GPS is turned off.
ACTION SPD is set to NSEC or SPEED. If you set ACTION SPD to NSEC, it will display the actual NSEC 2S speed averaged over 10 points at LOGGING 5HZ. If you set ACTION SPD to SPEED, it is displayed at a 200ms average. This means SPEED is based on individual points at LOGGING 5HZ and is noisy.
Screen 1: RSLT 1A/1B is set to NSEC TOP. This is the top speed of the 2-second averaged points since the last log clear.
Screen 2: RSLT 2A/2B is set to MSEC TOP. This is the top speed of the 5-second averaged points since the last log clear. You don't really need this screen, but setting it to X (off) is not available.
Screen 5: RSLT DIST is set to O (on). This is the distance covered since the last log clear.
Screens 3, 4, and 6 are not displayed, since they are set to X (off).
SPD GENIE is set to 2. Above 2 mph only ACTION SPD is displayed. Below 2 mph the display scrolls through Sreens 1, 2, 5, 1, 2, 5, 1. at the rate of 1.5 sec per screen. This number could be set to other low values. This all means that you can watch the actual speed while out on the water, then look at the non-noisy top speeds and distance when stopped.
The log runs when the GPS is turned on and stops when it is turned off. When running, it continuously appends data until it is cleared. That way you can collect data for a whole day of runs even when you turn off the GPS between runs.
By far, the nicest aspect of all this is the NSEC and MSEC point averaging. This averages out spikes. GPS units that do not perform this averaging (such as the Garmins and GPS-enabled cameras) will display noisy speeds. Note that MAX will show the maximum of individual points without any averaging. As a result, MAX is noisy.
The second nice aspect of this is that GPD GENIE makes things very convenient. You can set it to see actual speeds on the water and results on the beach without having to press buttons.
Glad you got it sorted segler. And I emphasise your point about MAX Speed, it's almost meaningless, can be as much as 1kt higher than a 1sec average.
And just to point out, for GTC purposes, it's best to set NSEC to 10s, to get the 5x10 ave and MSEC to 2s to see the 2s peak.
One thing I noticed today.
If 'Action Spd' is set to 'Speed' you also have the time of day displayed in small font the at top of screen.
Not there when set to show M sec
Could be important for working men or womened men.
I concur with Te Hau's observation. When it ACTION SPD is set on NSEC, it does not display time of day at the top. It shows what I think SPEED would show. Oh yeah, MSEC is not available here, only NSEC, at least on my watch.
Per Decrepit's recommendation, I did set MSEC to 2S and NSEC to 10S. Now the ACTION SPD shows the 10 second average. The two result screens show RSLT 1A/1B MSEC TOP for 2-second averaged top speed, and RSLT 2A/2B NSEC TOP for 10-sec averaged top speeds. All of this is pretty much exactly what I have wanted.
Thanks for the help, guys.
Yes, the reason we recommend setting Nsec to 10, is when you hit the up button, you get the average of the top 5 Nsec, so this is the GTC's 5x10 division.
