ZNB4频率 9 kHz to 4.5 GHz 动态范围宽，高达140 dB 扫描时间短达4ms（401扫描点数） 温度稳定度高，典型值0.01 dB/°C 功率扫描范围宽达98 dB 中频带宽可调范围宽，从1 Hz 到 10 MHz 手动和自动校准 12.1"高分辨率的大显示屏 触摸屏用户界面 两个或四个测试端口 混频器，谐波和交调测试 罗德与施瓦茨 Rohde&Schwarz 矢量网络分析仪 ZNB4 Vector Network Analyzer, 2 Port, 4.5 GHz, N The R&S ZNB vector network analyzers feature a wide dynamic range of up to 140 dB (at 10 Hz IF bandwidth), low trace noise of less than 0.004 dB RMS (at 10 kHz IF bandwidth) and high output power of up to +13 dBm, which can be adjusted electronically in a range of more than 95 dB. The new analyzers combine high measurement accuracy with exceptional speed- better than 10 s per point. They feature excellent temperature and long-term stability, which ensures reliable measurements over several days without having to recalibrate the units. These short-depth, compact two-port and four-port analyzers leave plenty of space on the workbench for the measurement application. They feature low operating noise thanks to low power consumption and a sophisticated cooling concept. The low power consumption also reduces operating costs and protects the environment. Features: -Wide dynamic range of up to 140 dB -Short sweep times of 4 ms for 401 points -High temperature stability of typ. 0.01 dB/ degrees C -Wide power sweep range of 98 dB -Wide range of IF bandwidths from 1 Hz to 10 MHz -Manual and automatic calibration -Large, high-resolution 12.1" screen -Touchscreen user interface -Two or four test ports