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Withgrowing data communications traffic, broadband radiocommunication systems suchas radio-LANs, are being developed thatemploy various modulation formats. Forexample, IMT-2000 and othermobile communication systems already usemulticarrier methods.Broadband radio signals are already being used in the RFband. Topush this envelope for higher quality data transmissions,researchersand developers are studying higher frequency/broaderband carriers. In this kindof radio communications environment,new measuring instruments are needed thatare not only moreefficient than ever, but also more flexible to support newtestrequirements and communication standards.¡¡¡¡TheR3671 and R3681 are one of these new measuring instrumentsfor this new era oftest and measurement requirements. The R3671and R3681 are high performancesignal analyzers. Employing ourunique RF technology, the R3671 and R3681achieve an AverageDisplay Noise Level of -158 dBm*1), a Third-Order InterceptPoint(TOI) specification of +26 dBm*2), and a signal purity of -122dBc/Hz*3) toenable measurements over a wide dynamic range.¡¡¡¡TheR3671 and R3681 also have unique noise correction functionsthat enhances theirdynamic range (¨C84 dBc [typical]) for W-CDMAadjacent leakagepower (ACLP)measurements. The R3671 and R3681come standard withbroadband modulationanalysis functions(bandwidth 25 MHz) as wellas RF measurement functions. Byaddingthe dedicated signal analysisoptions for the respectivecommunicationsystems to the R3671/3681,you can expand thefunctionality of transmittertesters.Furthermore, with an optionalRF signal generator that supportsdigitalmodulation, the R3671 andR3681 provide ease ofimplementation of the optimumtesting systemsfor uatinghigh-frequency devices.*1Typicalvalue at RBW of 1 Hz and 1 GHz with built-inpreamplifieroff*2Typicalvalue at 2 to 3.5 GHz*3Typicalvalue at 800 MHz and 10 kHz offset