为了测试3G和4G是如何影响调制解调器的电池寿命的，我在我的实验室进行了一些测试。
To see how connecting with the modem over 3G or 4G affects battery life, I ran some tests back at my lab.
我曾经在一家网络公司工作过，该公司将一个产品进行了beta测试，尽管用某一种类型的调制解调器会失败。
I once worked for a networking company that shipped a product to a beta test even though it was failing with one type of modem.
您猜猜，第一个测试版的用户就使用了那个类型的调制解调器。
You guessed it... the first beta customer used only that type of modem.
一旦查出问题后，调制解调器需要重新连接和测试，来验证正常的传输电平。
Once the problem is fixed, the modem is reconnected and tested to verify normal transmit levels.
嵌入式调制解调器的开发，可以分为三大部分：前期分析、中期设计和后期测试。
The research and development of embed modem is composed by three parts:the prophase analyse, the middle design, the anaphase testing.
在射频电路方面，提出了频率合成器和调制解调器设计方案，并通过测试证明了该方案的可行性。
In the aspect of RF circuits, the scheme of frequency synthesizer and modem is proposed, and the feasibility of the scheme is verified by practical test.
在射频电路方面，提出了频率合成器和调制解调器设计方案，并通过测试证明了该方案的可行性。
In the aspect of RF circuits, the scheme of frequency synthesizer and modem is proposed, and the feasibility of the scheme is verified by practical test.
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