安捷倫科技（NYSE: A）于9月10日宣布推出適用于流行的PNA系列網(wǎng)絡(luò)分析儀的嵌入式本機(jī)振蕩器（LO）。由于其不用直接進(jìn)行訪問(wèn)普通參考信號(hào)，可以準(zhǔn)確測(cè)試變頻器，這種新測(cè)試性能將作為新標(biāo)準(zhǔn)設(shè)置到RF中，為微波測(cè)試工程師和從事于無(wú)線和衛(wèi)星通信系統(tǒng)技術(shù)人員提供方便。 安捷倫的嵌入式LO測(cè)試性能可以被用于任意寬度的設(shè)備，一些其它的方法并不與振幅和復(fù)合調(diào)制所一制。由新的嵌入式LO測(cè)試性能產(chǎn)生的效果從本質(zhì)上與兩個(gè)中立的LO源的鎖相是相配的。在典型的Ka帶衛(wèi)星轉(zhuǎn)換器上，繼電器的精確性可達(dá)125 ps。 典型地，從表現(xiàn)數(shù)量的方法上來(lái)說(shuō)，一個(gè)混頻器的相數(shù)和組繼電器反應(yīng)要求能訪問(wèn)LO。在人造衛(wèi)星系統(tǒng)中，LO可能會(huì)被內(nèi)置于變頻器中并且不可見。以前的測(cè)量方法也是假定參考的混頻器由相同的嵌入式LO頻率驅(qū)動(dòng)作為受測(cè)設(shè)備，讓一個(gè)嵌入式LO阻止上述問(wèn)題。安捷倫的新嵌入式LO測(cè)量性能符合這一挑戰(zhàn)，允許用戶實(shí)現(xiàn)精確的測(cè)量，得出相關(guān)的相數(shù)數(shù)據(jù)，還不用訪問(wèn)普通參考信號(hào)。測(cè)試條件已經(jīng)被最優(yōu)化用于最大化生產(chǎn)。 安捷倫的PNA系列網(wǎng)絡(luò)分析儀包括三個(gè)部分：PNA、PNA-L和PNA-X.這些系列都建立在安捷倫40年的經(jīng)驗(yàn)基礎(chǔ)之上，在速度、精確性和多功能用途上都有所提高。其架構(gòu)包括：高質(zhì)量、穩(wěn)定的軟件和彈性軟件。 價(jià)格和供貨情況 安捷倫生產(chǎn)的用于PNA系列網(wǎng)絡(luò)分析儀的新嵌入式LO測(cè)量設(shè)備價(jià)值：$10,200 更多信息http://www.agilent.com/find/FCA 圖片下載http://www.agilent.com/find/Embedded_LO_images 關(guān)于安捷倫 安捷倫科技公司是測(cè)量的世界領(lǐng)袖公司，也是通信，電子，生命科學(xué)和化學(xué)分析技術(shù)的領(lǐng)導(dǎo)者。該公司擁有19000名員工服務(wù)于全球110多個(gè)國(guó)家的客戶。安捷倫在2006年財(cái)政年度凈收入50億美元。登錄公司網(wǎng)站咨詢?cè)摴拘畔?www.agilent.com。 [font=times]original text [/font] [font=times]Agilent Technologies‘ Embedded Local Oscillator Measurement Capability Sets New Standard in RF and Microwave Test [/font] [font=times][color=#708090]Agilent Technologies Inc. （NYSE: A） today announced the availability of a new embedded local oscillator （LO） measurement capability for its popular PNA Series network analyzers. With its ability to accurately test frequency converters without having to directly access a common reference signal, this new measurement capability sets a new standard for RF and microwave test engineers and technicians working on wireless and satellite communications systems. Agilent‘s embedded LO measurement capability can be used with arbitrarily narrow bandwidth devices —— something not possible with other methods requiring amplitude and complex modulation. Results from the new embedded LO measurement capability essentially match those achieved by phase locking two independent LO sources. On a typical Ka band satellite converter, delay accuracy as small as 125 ps has been achieved. Typically, methods for characterizing the magnitude, phase and group-delay responses of a mixer require access to the LO. In satellite systems, though, the LO may be internal to the frequency converter and not accessible. Previous measurement methods also assume that the reference mixer must be driven with an identical LO frequency as the device-under-test （DUT）; having an embedded LO precludes this. Agilent‘s new embedded LO measurement capability addresses this challenge by allowing users to accurately measure the relative phase and absolute group-delay responses of a DUT with a built-in LO source, and without having to access a common reference signal. A simple two-step calibration allows users to spend more time measuring their devices. Testing conditions have been optimized for maximum throughput without compromising quality. The Agilent PNA Series of network analyzers consists of three families: the PNA, PNA-L and premier-performance PNA-X. The series builds on Agilent‘s 40-year legacy of excellence to deliver new standards in speed, accuracy and versatility for microwave network analysis. Its architecture includes high quality, stable hardware and flexible software. U.S. Pricing and Availability Agilent‘s new embedded LO measurement capability for the PNA Series network analyzers is available now as a software option at a list price of $10,200. More information about this firmware update is available at www.agilent.com/find/FCA. Photos of the new measurement capability are available at www.agilent.com/find/Embedded_LO_images. About Agilent Technologies Agilent Technologies Inc. （NYSE: A） is the world‘s premier measurement company and a technology leader in communications, electronics, life sciences and chemical analysis. The company‘s 19,000 employees serve customers in more than 110 countries. Agilent had net revenue of $5.0 billion in fiscal 2006. Information about Agilent is available on the Web at www.agilent.com.[/color][/font]