Zadnje novičke

[izzardly]

...
Ker je ura namenjena multisportu (tudi dobila sem jo na triatlonu), sem jo septembra testirala v morju, da vidim, če je uporabna za plavanje. Pa niti ni .
Na roki oz. nogi že 10cm pod gladino izgubi signal in zaradi gibanja izmeri skoraj dvojno razdaljo. Je pa meritev presenetljivo natančna, če je ura v kapi . Utripa se ne splača meriti pod vodo, saj se signal neprestano izgublja.
...
LP

GPS signala ni v vodi...

Enako je pri utripu - tudi ne deluje v vodi.
Mislim, da je enako tudi pri Polarjih in ostalih, a ne?

<Grmin FR50 prikazuje srčni utrip v vodi, preverjeno,letos na morju! Sem pozabil sneti pas ko sem prišel iz fure in derekt v morje, tako da Fr 50 in pas od edge 305 (4.leta star) prikazuje utrip!

Saj FR310 utrip lovi tudi pod vodo, ampak na grafu se točno vidi, da ga je med plavanjem izgubljal, vrednosti šibajo gor-dol kot žaga, kar pa ni realno, če plavaš enakomerno.
Polar rs200 tudi ujame utrip v vodi, ampak ker prikaže le povprečno in maximalno vrednost, ne vem, kaj točno je ujel.
So pa to bili samo enkratni testi, da vidim, kaj nova igrača zmore. Med plavanjem si ne nameravam meriti utripa . Ima tale nov garmin zadosti drugih koristnih funkcij .

[klatez]

To make things clear:
5 kHz transmission ("old" Polar equipment) works under water.
2.4 GHz transmission (ANT+ and Polar W.I.N.D.) works NOT under water.

[MKC]

ima to kakšno vezo z 310XT?

[luzr]

Mkc, to ima zvezo z vprašanji, ki so se pojavila na tej strani. Kateri pulzmeter dejansko funkcionira v vodi. :>

[MKC]

no potem funkcionira tudi Sigma PC 15

[ZdravkoC]

Pred časom je tudi meni v vodi funkcionirala Sigma 14
danes je to drugačče ...

Na maratonu Reggio Emilia sem imel FR 305 (leva roka) in FR 310XT (desna roka). Slednji je nameril krajšo razdaljo.

Pas za srčno frekvenco je uprizarjal, v uvodu in pred koncem, takšne utripe, kot da bi umiral v zadnjem obroku. Stari pas si kaj takšnega ni privoščil

[klatez]

No glede novega HR pasa sem odprl temo na Garminovem forumu: https://forums.garmin.com/showthread.php?t=4140 (če se komu ljubi brat, je v angleščini)
Zanimivo je tudi, da ima novi kolesarski Garmin Edge 500, ki je prišel na trg pred kratkim, priložen stari HR pas...

Drugače pa sem na tem forumu naletel na oceno Garmina 310xt s strani uporabnika. Spet moram reči, da se kar strinjam.

I just updated my one star amazon review of the XT to a three star. I thought I would post this review here just to provide feedback in a place I know Garmin reps frequent. For me, the difference between a 3 and a 5 rating will be in a working heart rate monitor and improvement to Garmin connect.

My review:

The 310xt by Garmin is a part of a system of workout peripherals designed to aide you with your athletic training. As you read this review, consider that my perspective is that the entire system is a whole and not a bunch of disconnected parts. You can not slap a Polar chest strap into this system.

Cost – This is an expensive part of your training system. The 310xt is the head unit for you computer system and runs north of $300. But if you add the heart rate monitor and cadence sensors for bikes and shoes, you can double your costs. I have a chest strap, cadence sensors on two bikes and a foot pod. The $600 dollar price tag of the system may still be less than a comparable Polar system. When comparing price between the various systems, make sure you look at all the parts.

Head Unit – First, it is big. I don’t have a problem with that, because I look more like shot putter than a distance runner, but smaller wristed folks have complained. As a 40+-year-old athlete, big is advantageous in the fact you can see the data elements even if you are displaying three data points at a time. However, you have to know what each element is, because there is no way you can read the titles on the data element windows. The buttons are easy to use, even in gloves. I don’t find myself hitting the wrong buttons or having accidental changes like I have had on some Polar watches or the Garmin 405. The problems I have with the head unit are the ugly Orange and Gray color scheme and the lap and start/stop buttons are – for the way my brain works – backwards. Both are subjective and easily overcome.

Software – Oh the software. You can always tell when a company starts messing in things that are not core to their business. Garmin is a GPS company. They do not write good code. On the plus side, the Garmin software does support the Mac platform, on the downside, Mac support lags greatly. They are trying to overcome this by pushing a good deal of core functionality to the Web, but they have not gotten there yet. The code that runs the actual head unit was buggy out the door. It has become much more stable. But before you do anything else with the head unit, patch the firmware. The firmware it ships with will drop your workouts and cause you do have to do multiple hard resets. But all in all, the latest firmware seems to be stable and acceptable. But the software story goes beyond the head unit. Gathering data is useless unless you can analyze it. Because of the ANT+ interface, you are slaved to at least a portion of the Garmin computer software. You can not directly upload to Training Peaks or your favorite online software tracking/log system. Make sure you can send files from Garmin if you use something like Training Peaks (you can) if you intend to use a legacy logging system or work with a coach. Garmin’s web based platform is Garmin Connect. As long as it has been around, it still seems like a beta product. You can’t create workouts on the web-based platform, you can’t edit your workouts or even analyze a portion of a workout. The system seems sluggish. It is getting better, but support for the web site feels more like a hobby than a business priority. If you want to create workouts for your head unit, you will do so in the Garmin Training Center. The Mac version is just pitiful. It is counterintuitive and has the look and feel of a program that was written by someone whose last program project was “Hello World”. You can’t create a workout based upon pace, you can do so based upon speed. Anyway, Garmin has created a situation were you will be forced to maintain your data in three locations. Create your workouts in GTC, analyze in GC, setup in the head unit. If anyone in Garmin is reading can you explain why I have to setup my profile in three spots? Which way does the data flow? Can I place my Heart Rate zones in one of these three systems and just have it flow? Why do I have to enter an age, why don’t you set age based upon birth date? Why do I have to reenter everything on the head unit manually after an all too frequent reset? Why can’t I set the display preferences for the head unit in GTC and synch that to the head unit? I can’t think of any other product I use were I am forced to do repetitive data maintenance in three locations.

The old style heart rate strap – It was fine while it lasted. Not real comfortable if you are a barrel-chested guy. I understand that smaller folks have issues with comfort as well. My problem is that it died after a couple of months. I am hoping it just needs a new battery because….

The premium soft heart rate strap – Awful. A waste of your money. I kid you not, there is a part of the forum dedicated to the tendency of the chest strap to spike inaccurate readings that advocates smearing the contacts with honey or peanut butter. To be fair, those are user suggestions. Garmin suggests you (1) wear tight fitting (2) cotton (3) and move the chest strap upside down and on your back. I would suggest they follow Polar’s lead and build something that works. I have used three different versions of the Polar chest straps and never had an issues with this “common” problem of static causing misreads. I think the best advice I have had was from my running store who told me: Wear the Garmin on one arm and a real heart rate monitor on the other.

Bike Cadence Sensor – My only issue or comment on this product is you may find it hard to install on your bike if you have a modern design with odd shaped chain stays. The sensor is perfect on my Cannondale Synapse. It fits awful on My Scott Plasma and constantly needs to be readjusted.

Footpod – I do not have the new footpod yet. The older version I have has been an unremarkable part of the setup. I don’t say that because it does not work. Quite the contrary, I put it on, told my head unit I had it, and have not had an issue since. I don’t do a lot of treadmill work, so I generally only use it to force myself to increase my run cadence. But to me, the best peripheral is the one you completely forget about. It just works.

Power – I have not added an ANT+ power system. I am holding out for the new product integrated into the pedals instead of the hub based system.

Overall – I use the Garmin system because it has the most promise. Its promise is an all in one system that tracks everything and puts all the data in one place. Unfortunately, this system is still just promise. It is immature technology at best. Frankly there are a lot of days were I think I would be better off with a simple bottom of the line polar system. This system embodies what information technology professional’s call “bleeding edge”. I guess the most compelling overall comment what be to look at the wrists of professional triathletes. You will see a lot of Polar computers. I have never seen a pro using a Garmin.

[klatez]

Zakaj GPS ni točen glede višinske razlike?
(vir: https://forums.garmin.com/showthread.php?t=1957)

There are two major factors involved in elevation and GPS.

Firstly, what do you mean by elevation? And secondly, is a GPS derived elevation, as good as a GPS derived horizontal position?
GPS primarily indicates a surface (horizontal) position based on a mathematical model representing the earth's near-spherical surface. Height or elevation is a different kettle of fish. GPS can give a distance from the centre of the earth, and then by using the radius of the surface model (see above), give you an elevation from the surface model. Let's call this the mathematical elevation. Then you have to ask, does this represent a height above sea level? The answer is no. It may do so in places, but only by accident.

There are tables of the differences around the world, between the mathematical elevation and sea level elevation. [The spherical (more accurately ellipsoidal) models for GPS and sea level, are called the spheroid, and the geoid, respectively]. These tables are the result of observations taken over the last few centuries, by surveyors, space scientists and geologists.

Geologists get involved in these observations, because anomalies in gravity strengths often indicate mineralogy. And gravity strengths relate to the behaviour of level determination on the earth's surface.

Because the position solution found by GPS is a mathematical one, and the ranging from the satellites is in the order of 20,000 kms, there is an error bias in the direction of the earths centre. (Because of intersecting lines that may not quite meet.) This of course is the elevation solution.

So if we have an error of 10 metres in the horizontal position, the error in the elevation will be more like 20-30 metres.Your small standard GPS unit usually displays elevation, but you must accept it knowing the above limitations. I can say that it is reasonably sensible. Around the coast of Australia, it will be somewhere around zero, give or take 50 metres. In Toowoomba, it will be about 600 metres. Elsewhere in the world, it may show greater, or lesser discrepancy.

For a more technical explanation of the differences between the GPS surface model (the spheroid), and the sea level surface model (the geoid), you can visit the Geoscience Australia website at ga.gov.au

[tabonir]

Bolj ko prebiram mnenja o 310XT-hr, bolj sem v dilemi o racionalnosti nakupa tega modela. Vse kaže, da je glavna prednost tega modela le daljša avtonomija baterije in vodo tesnost.

Zanima me mnenje uporabnikov 310XT-hr o smiselnosti nakupa tega modela? Ali je morebiti pametneje vzet kakšen cenejši in starejši Garmin z GPS funkcijo(305, 405)?

[klatez]

Tole tudi ni slabo napisano:
http://dcrainmaker.blogspot.com/2009/09 ... eview.html

[Biz]

Ta review sam po sebi (ne glede na predmet) je fenomenalen.

[ZdravkoC]

Bolj ko prebiram mnenja o 310XT-hr, bolj sem v dilemi o racionalnosti nakupa tega modela. Vse kaže, da je glavna prednost tega modela le daljša avtonomija baterije in vodo tesnost.

Zanima me mnenje uporabnikov 310XT-hr o smiselnosti nakupa tega modela? Ali je morebiti pametneje vzet kakšen cenejši in starejši Garmin z GPS funkcijo(305, 405)?

Jaz sem bil nad novim modelom 310 zelo navdušen.
Ugotovil sem, da je HR pas zanič in sem pričel uporabljati starega od 305-ke.
Zablokirala mi je še brezžična povezava in mi niti prenos podatkov na računalnik več ne uspe.
Posledica je zelo raumljiva. Že nekaj časa uporabljam staro FR 305, ki me doslej še ni razočarala. Po treh letih vsakodnevne uporabe je avtonomija stare 305-ke še zgolj ca 6 ur. Za vsak dan je OK.

[wind]

...
So if we have an error of 10 metres in the horizontal position, the error in the elevation will be more like 20-30 metres.

Tole pa ne drži. Npr, ko sem na vrhu hriba kake pol ure, gps horizontalno lahko kiksne tudi več kot 10m čez rob, višina pa odstopa največ 5m. Glej sliko, del loga, tale hrib je visok 1839m, vsi odčitki na vrhu so med 1839 in 1843m, čeprav je šel vmes horizontalno krepko čez greben (okrog 12m). Na vrhovih, grebenih so višine zelo v redu, horizontalno pa gre gps občasno dobesedno po luftu.

BTW, tole je celo iz enega poceni gps logger-ja, ki ima za današnje razmere že precej zastarel chipset. Po mojih izkušnjah večje napake pri višini (tudi čez 30m) nastanejo zaradi odbojev signala (od strmega pobočja, sten, višjih stavb), nikakor pa ne drži, da lahko iz horizontalne napake sklepamo o sorazmerni napaki višine.

[tabonir]

Garmin 310 XT sem nabavil 2.1.2010.
Do danes sem pretekel z njim 596km. Baterijo sem polnil 3.1.10 nato 13.2.10 in še 11.3.10 GPS funkcijo nisem imel vklopljene na tekmah Pohorske zimske lige, razen dveh tekem in na ~20-25% treninga. Pulz si merim vedno razen na tekmah!
Prenos podatkov na računalnik je do danes potekal brez kakršnih koli težav. Tudi merjenje pulza poteka brez težav, namerim enake vrednosti kot s starim merilcem Suunto xt3!
GPS kaže zadovoljivo natančno tudi v zaprtih grapah. To sem se prepričal ko sem tekel na Duh na Ostrem vrhu; http://connect.garmin.com/player/27049884 !
Je pa zanimivo, da je sled veliko bolj natančno izrisana če datoteko GPX izvozim v 3D karto; http://www.gaeaplus.si/sl ali v Google Earth, kot pa na karti v SportTracks-u ali Garmin conect-u.

Do sedaj sem z napravo zelo zadovoljen, predvsem s trajanjem baterije in velikostjo številk na zaslonu. Izredno uporabna je tudi možnost nastavitev različnih kombinacij zaslonov oz.polj (4 x 4)! Tako si lahko med tekom udobno ogledujem parametre, ki jih želim.

[klatez]

Takole - pri "Klatez research laboratories" smo se spravili na novi premium senzor srčnega utripa, ki ga (po domače) precej "biksa".

Uporabil sem polarjev pas in nanj pritrdil garminov oddajnik (na srečo imata enake kontakte). Razlika med polarjevim in garminovim pasom je v tem, da je polarjev tam, kjer sta kontakta, v enem kosu. In posledično tam ni gibanja (in očitno tudi izgube signala).

Garminov pa ima pri konektorje na koncu pasu brez povezave. In tam se zadeva premika in zgleda, da tudi signal gre v...

Pa še primerjava pasov v sliki:
Garmin:

Polar:


Obstaja pa še rešitev, da ga pri kontaktih enostavno zalepiš:
(kako pa ga potem gor spraviš, pa še raziskujem...)


Upam, da je to to, ker sem že mislil, da bom moral ženo počasi menjati (glede na pulze, ki jih je dosegala s tem garminovim HR pasom)...