手机可靠性设计，手机采用何种技术防止手机摔坏，保证手机在高温、低温湿热、时仍能正常工作，以及如何应对振动的环境等等。
2013-04-06 22:39
亲爱的专家我有以下警告按摩，因此，实施 - 映射时间这么久。我使用mmcm逻辑，mmcm生成的时钟用于interfacelogic withadc芯片。这就是警告按摩发生的原因。我怎么解决这个问题 ？以上来自于谷歌翻译以下为原文Dear Experts I have below warning massage, thus, implement - mapping time takes so long.I use mmcm logic and clock generated from mmcm is used at interface logic with adc chip.this is why warning massage happen. How can I solve this problem ?
2018-10-17 14:26
Tektronix公司据公布的报告，预计在未来五年内，RFID市场的年复合增长率将达到20%。目前仍有许多障碍需要克服，包括商业障碍和技术障碍。常见的技术问题包括阅读速率差或支持RFID的设施或环境中使用的其它无线设备产生的干扰。泰克现在是第一个支持ISO18000-7和ISO 15693 RFID标准的频谱分析仪供应商。由于具备这种支持，RSA3000B系列为一系列RFID/NFC标准提供了集成分析功能。它使用简化的基于标准的测量进行RFID标准定时测量、频率测量、调制测量和比特率测量。
2019-07-12 08:32
在RFID行业内部，有大量的标签类型支持物品的识别、追踪和管理。标签类型分成三大类。
2019-10-12 07:42
我设计了一个项目，包括picoblaze和UART以及我的设计，它是一个售票机，一个块RAM，一个将ascii转换为二进制并将数据发送到picoblaze的组件，以及一个连接picoblaze的“桥梁”组件。自动售货机。自动售货机是一个完整的其他项目，已在Spartan3上进行测试和实施，完美运行！现在有了这个新项目，我希望通过UART和ascii到二进制组件从BRAM上的PC终端程序加载4种类型的票证。分析项目并不重要。您应该知道的是，picoblaze完成了我需要的所有控制并与桥接器，块RAM和ascii到二进制组件进行通信 无论如何，事情是，即使项目的模拟是完美的，只是我想要的方式，最终项目不在spartan3设备上工作。我在“实施设计”程序中收到了这些警告：路线455-“CLK Net：mult1 / errorD_not0001可能有过度偏斜，因为..........”并在“生成编程文件”过程中：PhysDesignRules：372- 门控时钟。时钟网mult2 / ad_not0001由组合引脚提供。这不是好的设计实践。使用CE引脚控制数据加载到触发器中。等等......在设计中我应该注意到这些警告消失了吗？先谢谢你，阿波斯托以上来自于谷歌翻译以下为原文 I've designed a project that includs picoblaze and UART and my design which is a ticket vending machine, a block RAM, a component that converts ascii to binary and sends data to picoblaze and a component which is a "bridge" to connect picoblaze with the vending machine. The vending machine is a whole other project which has been tested and implemented on a Spartan3 and works perfectly!! Now with this new projectI wish to load the number of 4 types of tickets from a PC terminal program on the BRAM through UART and the ascii to binary component.It's not importnant to analyze the project. What you should know is that picoblaze does all the controlling I need and communicates with the bridge, the block RAM and the ascii to binary componentAnyway, the thing is thateven though the simulation of the project is perfect, just the way I want things to be, eventually the project is not working on the spartan3 device. I get these warnings during the "Implement Design" procedure: Route 455-"CLK Net:mult1/errorD_not0001 may have excessive skew because .........." and during the "Generate Programming FIle" procedure:PhysDesignRules:372 - Gated clock. Clock net mult2/ad_not0001 is sourcedby a combinatorial pin. This is not good design practice. Use the CE pin tocontrol the loading of data into the flip-flop. etc...... What should I be aware of in the design for these warning to disappear? Thank you in advance,Apostolos
2018-10-09 15:37
嗨，我用它的85046a保持8753a但是4线不是原装的，我用的是短的RG223。网络工作良好，但响应不是很平坦，例如对于低频率的S11测量（dB），测量值非常大，但3GHz大约为-1.5dB。没问题，校准（SOL和85032套件）响应变得平坦。当我关闭仪器时，我需要连接校准套件。有一种方法可以存储这种校准，如电缆补偿或校正？我需要一个特定的软件o校正工具？我阅读了服务/用户/现场手册，但没有关于这个问题。我想知道手册没有谈到真正的仪器校准/校正，我认为这是正常的有相同的组件（指令耦合器，电缆，连接器..）差异很小。提前致谢。马特奥 以上来自于谷歌翻译 以下为原文Hi, i've an hold 8753a with its 85046a but the 4 cable aren't original, i've used a short RG223 instead. The network works well but the response are not soo flat, for example for the S11 measure (dB) at low frequency the measure is quite 0dB but at 3GHz is about -1.5dB. No problem, with the calibration (SOL with 85032 kit) the response became flat. When i turn off the instrument everthing going back and any time i've to connect the calibration kit. There is a way to store this calibration like a cable compensation or correction? I need a particular software o correction tool?I read the service/user/on site manual but nothing about this problem.I'm wondering about that the manuals doesn't talk about a real instrument calibration/correction, i think that is normal have same components (directive coupler, cable, connector..) with small difference. thanks in advance. matteo
2019-01-03 15:20
