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Viso II questions

 


240m3srt  (A License)

Mar 3, 2010, 8:56 AM
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Viso II questions Can't Post

I jumped a digital altimeter for the first time over the weekend, the Viso II. I love it so far but have some concerns.

I noticed that when the plane first takes off it will not start reading until around 270-320 ft...is this normal?

Also, the thing works great for datalogging, with one small issue. I did one hop and pop and it did not record free fall speed, yet it recorded the jump altitude and deployment altitude. It even recorded the freefall time as 8 sec(didnt feel that longUnimpressed)...so is it possible that unless you hit a certain speed for a certain amount of time that it will not record the speed(such as a hop and pop).


buff  (D 30567)

Mar 3, 2010, 9:02 AM
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Re: [240m3srt] Viso II questions [In reply to] Can't Post

Mine works the same way.

The manual that came with your Viso explains this and the varying settings.

Since you are relying on this for accurate information to save your life, it would be a good thing to read before jumping it again. I'm just saying.


Premier likestojump  (D License)

Mar 3, 2010, 9:23 AM
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Re: [240m3srt] Viso II questions [In reply to] Can't Post

I know in the Protrack it will not record speed unless you are in freefall for over 20 seconds. I am guessing it's similar with the Viso. Think about how the speed is done - it's averaged from the time you leave the airplane (very little vertical speed, mostly bleeding off the forward movement of the plane), to the time you deploy, at which point you are going at or close to terminal. If you do a 4 second delay your average speed will be very inaccurate relative to the speed you were deploying at.


ridestrong  (C 38471)

Mar 3, 2010, 8:10 PM
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Re: [240m3srt] Viso II questions [In reply to] Can't Post

In reply to:
I jumped a digital altimeter for the first time over the weekend, the Viso II. I love it so far but have some concerns.

I noticed that when the plane first takes off it will not start reading until around 270-320 ft...is this normal?

Also, the thing works great for datalogging, with one small issue. I did one hop and pop and it did not record free fall speed, yet it recorded the jump altitude and deployment altitude. It even recorded the freefall time as 8 sec(didnt feel that longUnimpressed)...so is it possible that unless you hit a certain speed for a certain amount of time that it will not record the speed(such as a hop and pop).

The Neptune has the exact same issues, and yes it is normal.


JohnnyMarko

Mar 3, 2010, 8:20 PM
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Re: [240m3srt] Viso II questions [In reply to] Can't Post

I made 3 jumps this past Sunday with my new Viso II...My instructor jumped it for me the first, then I made 2 jumps after that with it...She jumped from 11K and it recorded her altitude, deployment, speed, time (51 seconds)...my jumps were only from 7K and I logged 16 second freefalls...in the logbook, it displayed her speed...on my jumps, it did not record a freefall speed...BUT, when I went back to the "Last Jump Playback Feature", it did give me a freefall speed, but only on the playback, so I'm not sure...I sent an e-mail to L&B to see what's up...


Cueb  (C License)

Mar 4, 2010, 2:04 AM
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Re: [JohnnyMarko] Viso II questions [In reply to] Can't Post

you could've just read the manual. And the replies here. Like said, it doesn't log speeds for under 20s free fall.


(This post was edited by Cueb on Mar 4, 2010, 2:05 AM)


kingbunky  (B 5376)

Mar 4, 2010, 5:15 AM
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Re: [Cueb] Viso II questions [In reply to] Can't Post

if it's like the viso (original), there are 3 different jump types. freefall, for normal jumps, slow fall for wingsuits, will log really long freefall times and student, which will record hop'n'pops. i noticed that my freefall time seemed long, and as near as i can figure, it sort of splits the difference on the time you pull to the time you're in the saddle as freefall.

ymmv.


240m3srt  (A License)

Mar 4, 2010, 8:14 AM
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Re: [kingbunky] Viso II questions [In reply to] Can't Post

In reply to:
if it's like the viso (original), there are 3 different jump types. freefall, for normal jumps, slow fall for wingsuits, will log really long freefall times and student, which will record hop'n'pops. i noticed that my freefall time seemed long, and as near as i can figure, it sort of splits the difference on the time you pull to the time you're in the saddle as freefall.

ymmv.

Thanks for the replies guys. I actually did read the manual multiple times but it took me a few days of playing with viso II before i felt effecient going through the different screens and knowing what was what.

Im wondering if your right about it splitting the time between when you pull and when your actually under a fully inflated canopy, especially on hop and pops. The reason i say this is because im almost certain i was not in freefall for 8 sec and only dropped 500 ft.


ridestrong  (C 38471)

Mar 4, 2010, 8:54 AM
Post #9 of 19 (1276 views)
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Re: [240m3srt] Viso II questions [In reply to] Can't Post

In reply to:
In reply to:
if it's like the viso (original), there are 3 different jump types. freefall, for normal jumps, slow fall for wingsuits, will log really long freefall times and student, which will record hop'n'pops. i noticed that my freefall time seemed long, and as near as i can figure, it sort of splits the difference on the time you pull to the time you're in the saddle as freefall.

ymmv.

Thanks for the replies guys. I actually did read the manual multiple times but it took me a few days of playing with viso II before i felt effecient going through the different screens and knowing what was what.

Im wondering if your right about it splitting the time between when you pull and when your actually under a fully inflated canopy, especially on hop and pops. The reason i say this is because im almost certain i was not in freefall for 8 sec and only dropped 500 ft.

Your free fall 'end-time' and 'altitude under canopy' is after you are under an essentially fully inflated canopy.


CygnusX-1  (B 28761)

Mar 4, 2010, 9:49 AM
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Re: [240m3srt] Viso II questions [In reply to] Can't Post

Quote:
splitting the time between when you pull and when your actually under a fully inflated canopy

I just got a new Viso II also. I must be missing something when I read through the manual. How do you tell your Viso that you are removing the pilot chute from the BOC, i.e. pull?


Hellis

Mar 4, 2010, 11:02 AM
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Re: [CygnusX-1] Viso II questions [In reply to] Can't Post

Without looking up, how do you know you have a canopy above your head?
The Viso does the same, it "feels" the snatchforce from the canopy (sudden loss of speed)


phoenixlpr  (D 3049)

Mar 4, 2010, 12:32 PM
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Re: [Hellis] Viso II questions [In reply to] Can't Post

In reply to:
The Viso does the same, it "feels" the snatchforce from the canopy (sudden loss of speed)
Wrong.

Just a little change in air pressure.


Andy0689  (A 55692)

Mar 4, 2010, 1:13 PM
Post #13 of 19 (1225 views)
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Re: [240m3srt] Viso II questions [In reply to] Can't Post

In reply to:
I noticed that when the plane first takes off it will not start reading until around 270-320 ft...is this normal?

That low, huh? I have had mine start reading as high as 500+ feet. As everyone else here mentioned, it sounds like your Viso is working just fine. Maybe even better than mine becuase I didn't record any data for my h&p jumps.

Make sure you go in and manually adjust the jump number. Also, keep a pair of extra batteries in your bag. They aren't the kind you can just bum off a buddy since they are expensive little critters.


buff  (D 30567)

Mar 4, 2010, 1:34 PM
Post #14 of 19 (1220 views)
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Re: [Andy0689] Viso II questions [In reply to] Can't Post

[reply Also, keep a pair of extra batteries in your bag. They aren't the kind you can just bum off a buddy since they are expensive little critters.
+1
I can only find them locally at Radio (what the hell is that, we are a cell phone store) Shack. If travelling, you don't want to have to spend 1/2 your jump day hunting a pair. About $5 each.


Hellis

Mar 4, 2010, 7:11 PM
Post #15 of 19 (1194 views)
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Re: [phoenixlpr] Viso II questions [In reply to] Can't Post

In reply to:
In reply to:
The Viso does the same, it "feels" the snatchforce from the canopy (sudden loss of speed)
Wrong.

Just a little change in air pressure.

There are little changes in pressure during the whole jump, so what makes it notice the pull?

When you lose so much vertical speed that you cant do while still in freefall the Viso records it as you are under canopy.


phoenixlpr  (D 3049)

Mar 5, 2010, 12:14 AM
Post #16 of 19 (1164 views)
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Re: [Hellis] Viso II questions [In reply to] Can't Post

In reply to:
In reply to:
In reply to:
The Viso does the same, it "feels" the snatchforce from the canopy (sudden loss of speed)
Wrong.

Just a little change in air pressure.

There are little changes in pressure during the whole jump, so what makes it notice the pull?

When you lose so much vertical speed that you cant do while still in freefall the Viso records it as you are under canopy.
Its not magic, its a barometric device.


Harmless  (D 30719)

Mar 5, 2010, 5:20 AM
Post #17 of 19 (1135 views)
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Re: [buff] Viso II questions [In reply to] Can't Post

In reply to:
+1
I can only find them locally at Radio (what the hell is that, we are a cell phone store) Shack. If travelling, you don't want to have to spend 1/2 your jump day hunting a pair. About $5 each.

psst... Cell phones are radios LaughLaughSmile


BrianM  (D 661)

Mar 5, 2010, 8:34 AM
Post #18 of 19 (1112 views)
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Re: [Harmless] Viso II questions [In reply to] Can't Post

In reply to:
psst... Cell phones are radios LaughLaughSmile

Indeed. In fact, any cell phone with Bluetooth is two radios. If you have a fancy smartphone that has WiFi, it is three radios! Wink


eetula  (C License)

Jun 8, 2010, 2:34 AM
Post #19 of 19 (878 views)
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Re: [BrianM] Viso II questions [In reply to] Can't Post

hello everyone. i was wondering that if viso in student mode can identify hop n pops is there some reason not to use student mode all the time.?

what i'm trying to say: is there some negative things about using the student mode in "normal" lenght freefall jumps?

thanks..



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