在讨论谎言和溜冰者之间的通信时，需要考虑的另一件事是列出我们使用什么来实际在 Chimay 和 RPO 之间传输信号。
In discussing communications between your lies and skaters and sees another thing to consider is tabling what are we using to actually transfer the signals between our Chimay and RPO see.

在自动化领域，我们有许多不同的电缆可供使用，这只是 APL C 的一个示例，您可以看到它支持三种不同的电缆，您可以将它们用于通信。
Well we have a host of different cables available to us in the world of automation and this is just one example of APL C which you can see supports three different cables which you could use for communications.

现在，一种是我们从 80 年代和 90 年代开始使用的老式串行电缆，尽管我们的大多数计算机甚至不再配备这种端口，但它至今仍然存在。
Now one is our good old fashioned serial cable back from the 80s and the 90s and it's still around today even though most of our computers don't even come with this kind of port anymore.

尽管如此，仍然有人因为这个原因或仍然使用谷物。
Still you've got people out there that for this reason or that still use cereal.

原因之一是，当您使用串行连接时，您确实拥有一个非常稳定的连接，即使不是有点慢，但仍然是一个稳定的连接，并且您的 PC 和 HDMI 之间不需要有太多的网络基础设施，除了可能是一个没有调制解调器。
And one reason is because when you're using a serial connection you really have a very stable if not somewhat slow but still a stable connection and you don't have to have much network infrastructure in between your PC and your HDMI other than maybe a no modem.

然后你看第二个，我们有标准以太网端口。
Then you look at number two we've got our standard Ethernet port.

现在，这是迄今为止首选的通信方法。
Now that is by far the preferred method for communication.

因此，如果您使用的是 Cat 5 以太网电缆，该电缆与现在可能连接到您家中调制解调器的以太网电缆相同，那么它没有什么特别的，没有什么独特之处，从海上连接到交换机或路由器，然后从那里开始连接到您的计算机或 HDMI，一些主要的 Mai 甚至具有内置交叉功能，您甚至不需要在它们之间进行切换，您实际上可以直接将电缆从 PC 连接到 HDMI，它会进行交叉每当您尝试使用以太网电缆时，您通常无法将该电缆直接从一个设备连接到另一个设备。
So if you're using a Cat 5 ethernet cable which is the same ethernet cable that's probably running into your modem in your house right now it's nothing special nothing unique that runs from the sea into a switch or a router and then that goes from there into your computer or your HDMI and some major Mai's even have a built in crossover function where you don't even have to have a switch between them you can actually run the cable straight from the PC to the HDMI and it will do the crossing over for you whenever you try to use an Ethernet cable you can't run that cable generally straight from one device to another.

它们无法通信，因为内部有几根电线必须切换才能进行双工通信。
They can't communicate because there are a couple of wires inside of there that have to be switched over for duplex communication.

这就是开关的作用，这就是它被称为开关的原因，因为它为您切换这些电线。
That's what a switch does that's why it's called a switch because it switches those wires for you.

其中一些 HDMI 设备实际上内置了切换功能，因此它有点像内置了自己的开关的设备，您可以在它们之间运行普通电缆。
Some of these HDMI devices actually have the switching function built into them so it's kind of like a device with its own switch built in and you can run a normal cable between them.

还有一种所谓的交叉电缆，它实际上在电缆内部交换了电线，因此您可以使用其中一根电缆，实际上可以将其一端直接插入大海，另一端直接插入 HDMI。
Then there are also what's called crossover cables which actually have the wires switched internally in the cable so you can take one of those cables and you can actually plug it directly into the sea on one end and the HDMI on the other end.

并且会起作用。
And will work.

但是，当您使用普通的以太网电缆时，您确实需要在交换机或路由器或类似设备之间有一些网络基础设施，并且您通常会想要这样，因为大多数时候您的 PC 和溜冰者的眼睛和 HDMI 眼睛无论如何，实际上都会在网络上，所以只取决于您的需求，但是使用以太网，您拥有比使用串行电缆或三号专有电缆更具可扩展性的应用程序，每个制造商的专有电缆都是不同的。
But when you're using normal ethernet cables you do need to have some network infrastructure in between a switch or a router or something like that and you're usually going to want that anyway because most of the time your PCs and skater's and HDMI eyes are actually going to be on a network anyway so just depends on what your needs are but with ethernet you have a much more scalable application than if you're using either a serial cable or number three a proprietary cable proprietary cables are different for every manufacturer.

出于某种原因，这可能真的只是白白赚钱。
And for some reason which is really probably just making money for nothing.

大多数制造商都会有自己的专用电缆用于其 PC。
Most of your manufacturers will have their own special cable to use with their PCs.

当您看到它时，您就会知道这是有道理的，因为电缆本身的价值实际上不到一美元。
And when you look at it you know it kind of makes sense because a cable all by itself is really worth less than a dollar.

但他们有时以每根 20 到 50 美元的价格出售这些连接电缆和专有电缆。
But they sell these connects cables these proprietary cables sometimes for 20 and fifty dollars apiece.

为什么。
Why.

好吧，只是为了赚钱，因为有人愿意购买这些电缆，所以他们发明了它们。
Well just to make money because there are people out there that are willing to buy these cables so they invent them.

他们编造出来的。
They make them up.

他们确实没有任何特别的好处。
They really don't have any particular benefit.

事实上，有一半的情况下，它们制造成本低廉，很容易失败，但它们以高得离谱的价格出售，人们仍然喜欢使用它们。
In fact half of the time they're cheaply made and fail easily but they sell them for outrageous prices and people still love to use them.

所以我建议使用专有电缆。
So do I recommend using proprietary cables.

几乎从不。
Almost never.

如果您正在谈论一个系统，请参阅提供以太网的良好政策。
If you're speaking out a system get a good policy see that offers ethernet.

我的意思是，即使是您的低端 PLCC 和 HDMI 今天也无法连接以太网。
I mean even your lower end PLCC and HDMI is today off for ethernet.

如果它不提供以太网 Knol，它有一条专有电缆。
If it doesn't offer Ethernet Knol it has a proprietary cable.

甚至不要在上面浪费时间。
Don't even waste your time on it.

这是廉价的技术，但并不好。
It's cheap technology it's not good.

它与任何东西都不兼容。
It's not compatible with anything.

这将比节省开支更让人头疼。
It's going to be more of a headache than a savings.

因此，无论如何，专有电缆都有其一席之地。
So by all means proprietary cables have their place.

人们喜欢在小型系统上使用它们，尤其是在小型系统上，您只有 APL C 中的一个 h my 和一个面板，并且不需要或不需要任何网络连接，那么您只需将这些专有电缆插在那里即可。
People like to use them especially on small systems where you have just an h my in APL C and a single panel and no desire or need whatsoever for network connectivity then these proprietary cables you can just slap them in there.

通常它们比串行电缆干净一点，但在任何其他时候对于任何重要的设备来说都是如此。
And usually they're a little bit cleaner than a serial cable but any other time for any serious equipment.

我总是建议使用互联网。
I always recommend going with the Internet.

因此，每当您尝试在 HMO 和人们看到的设备之间进行通信时，您在现场很可能会看到这三种不同的电缆
So those are the three different cables that you're really likely to see in the field whenever you're trying to communicate between an HMO and a people see