英国WAYNE KERR生产的测试仪器是世界计量实验室使用的仪器，获得极高的品质声誉。1.特点说明 ：0.1基本精确度．测试频率最高可达10MHz ．频率设定解析度达1Hz ．提供完整的测试功能．阻抗分析图形分析功能．直觉式人性化操作介面．可內建DC BIAS Voltage或Current ．GPIB,RS-232,Printer Port介面．无法抗拒的功能/价格比。 2. MEASUREMENT PARAMETERS（测量参数）： ｜Z｜、｜Y｜、Θ、R、X、G、B、L、C、Q、D、ESR、DCR Measurement Circuit : Series of Parallel Mathematical Functions : absolute and percent deviation Test Signal information Test Frequency 6420A 20Hz-3MHz 6420B 20Hz-5MHz 6420C 20Hz-10MHz Frequency step resolution 5 Digits Frequency Accuracy ±0.005% Output Impedance 100Ω AC Drive Level 10mV to 2V rms (1m Vrms steps) Measurement Range ｜Z｜ R X 0.1 mΩ~100MΩ ｜Y｜ G B 10nS~1000S C 0.1pF~1F L 0.1nH-100KH D 0.0001~9.9999 Q 0.1~9999.9 θ -180°~+180° DCR 0.1mΩ~100MΩ Δ% -999.99%~999.99% Basic Accuracy ±0.1% ｜Z｜,R,X,｜Y｜,G,B,C,L Measurement Time 　DC AC Max : 30mS 75mS Fast : 60mS 150mS Medium : 120mS 450mS Slow : 500mS 600mS LCD Display 320*240 dot-matrix display Correction OPEN / SHORT : Eliminates measurement errors due to stray parasitic impedances in the test fixtures. Comparator Functions HIGH / PASS / LOW For each primary measurement parameter and secondary measurement parameter.Other Functions Save / Recall : 64 Multi-step can be saved/recalled from the internal nonvolatile memory. Continuous Memory Capability : If the instrument is turned off , or if a power failure occurs, instrument setting are automatically memorized. Interface : Handler,GBIP and Printer Port General Specifications Power requirements 90~132Vac or 198~264Vac(selectable) 47~66Hz 45VA max. Operation Temperature 10℃ to 45℃ Operation Humidity ＜95% at 40℃ Size and Weight Height 150mm(5.9〞) Width 440mm(17.37〞) Depth 525mm(20.5〞) Weight 9kg(19.8lbs)