The most convenient thing of D9 is its size. You can wear it like a watch during the dive trip. I don’t see any divers who were wearing the big SP wrist computer out of water.
It has three gas switch function, but you cannot get three transmitters. Ouch, I realized it after buying D9. In addition, this function is for the deco diving, but in reality I am wondering how many tech divers are actually using this watch and function except the gauge mode and bottom timer. I also haven’t use this gas switch function during the deco diving. (GAS SWITCH 一般都用不上吗?)
The digital compass is a gimmick if you are doing a lot of navigation. It will gives an instant direction, but not for the navigation. Don’t get me wrong. The navigation and search and recovery are the major part of my diving type, scientific diving. (GIVING DIRECTION和NAVIGATION有什么区别吗?)
I don’t have any bug or error on the computer. Only thing I am sick and tired of is the Suunto DM SW. It has an endless bug and fix.
I don’t think it is worth for $1500, but you can get it lower than that. If I do it again, I would buy other tech oriented computer for me.
回答你问题，GIVING DIRECTION和NAVIGATION有什么区别吗? DIRECTION只是指出方向，比如目前正对南方或目前正对北方。NAVIGATION，中文是导航， DIRECTION一个简单的NAVIGATION模式：“先设定一个方向，比如180度，在你diving的时候，手表会显示你离开你的方向相差多少度，并显示一个向左或向右的箭头，告诉你如何最快转向你的目标。对于真正的NAVIGATION导航，你可以看看现在的车用导航仪或PND (Personal Navigation Device), 当你设定目的地后，注意，是目的地，不是方向。由于通过GPS给你实时的定位，导航仪会告诉你，你现在应该往左走还是往右走，并显示你离开目的地有多少距离，何时能到达等信息。一条计算过并已经考虑到交通禁令的正确路径将会显示出来。这归功于制作精确的电子地图（笔者工作的公司就是全球做电子地图的老大NAVTEQ），Google MAP和国内的MAPBAR等网站上也都可以做到这点。由于潜水时没有GPS信号及必要的海底电子地图，所以目前暂时无法做到水下导航NAVIGATION。
我的口号和你的差不多: 五大潜水圣地, 一个都不能少
以后搭伴一起去啊
我记得好像PADI有个课程: 水底导航
回答问题：
1.The most convenient thing of D9 is its size. You can wear it like a watch during the dive trip. I don’t see any divers who were wearing the big SP wrist computer out of water.
答：D9的外型和做工很好。但其他的潜水表也有很多很漂亮。
2.It has three gas switch function, but you cannot get three transmitters. Ouch, I realized it after buying D9. In addition, this function is for the deco diving, but in reality I am wondering how many tech divers are actually using this watch and function except the gauge mode and bottom timer. I also haven’t use this gas switch function during the deco diving.
答：D9支持三个无线压力传输sensor，确实很少见有人买三个头，然后切来切去。Ferrari时速可到300KM以上，真跑这么快也没几个吧。技术潜水没有几个人用D9来算减压，大家都是开了Gauge模式，按照自己的计划走。但在技术潜水里，D9支持200米，很多电脑表，99米就到了极限。而且，用双瓶时，残压表只有一只，实际只能监控一个瓶的残压，这时用无线sensor来监控另一个，真是又方便，又安全。
3.The digital compass is a gimmick if you are doing a lot of navigation. It will gives an instant direction, but not for the navigation. Don’t get me wrong. The navigation and search and recovery are the major part of my diving type, scientific diving. (GIVING DIRECTION和NAVIGATION有什么区别吗?)
答：从来是说D9有电子指北功能，要做水下导航，还是要靠人脑吧。更别去扯GPS了。
4.I don’t have any bug or error on the computer. Only thing I am sick and tired of is the Suunto DM SW. It has an endless bug and fix.
答：D9确实很稳定，很稳定。就这点来说，好过了蚊子、nemo....太多。
5.I don’t think it is worth for $1500, but you can get it lower than that. If I do it again, I would buy other tech oriented computer for me.
答：我也认为不值1500刀，但买了却不后悔。