英国WAYNE KERR生产的测试仪器是世界计量实验室使用的仪器，获得高的品质声誉。
特点说明
．0.1基本度
．测试频率可达10MHz
．频率设定解析度达1Hz
．提供完整的测试功能
．阻分析图形分析功能
．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
．无法拒的功能/价格比
| MEASUREMENT PARAMETERS | ｜Z｜、｜Y｜、Θ、R、X、G、B、L、C、Q、D、R、DCR | |
| Measurement Circuit : | Seri of Parallel | |
| Mathematical Functions : | absolute and percent deviation | |
| Tt Signal information | ||
| Tt Frequency | ||
| 6420A | 20Hz-3MHz | |
| 6420B | 20Hz-5MHz | |
| 6420C | 20Hz-10MHz | |
| Frequency step rolution | 5 Dis | |
| Frequency Accuracy | &plun;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 | &plun;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 : | Eliminat measurement errors due to stray parasitic impedanc in the tt fixtur. | |
| 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) |
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