选用二手测量仪器的优势是：
1、与新购仪器几个月的供货期相比，购买二手仪器的供货期要短的多。在时间就是市场的今天，优势无疑是最为明显的。
2、二手仪器的价格便宜，基本为新购仪器价格的20%～50%。在电子技术迅速发展的今天，仪器的更新也在加快，投资越少则风险越小。
3、为了让您放心地使用我们提供的二手仪器，我们销售的二手仪器可以做到：
1、保修半年至一年不等。
2、可以根据您的要求，将仪器送至国家级计量测试单位进行校准。
The MS4630B is suitable for electronics production lines demanding fast and accurate device measurements. It is particularly well suited to accurate, high-speed evaluation of IF filter resonance and group delay characteristics, as well as evaluating the impedance characteristics of resonators in AV equipment and PCs.
A fast sweep speed of 150 µs/point is achieved using a high-speed synthesizer and digital signal processing (DSP) technologies. The post-processing data analysis functions have been strengthened with improved data processing macros that greatly increase the total production throughput.
In comparison to the earlier MS3401A/B and MS3606B network analyzers, the sweep speed is three times faster and the group delay measurement accuracy and stability have been improved by more than 10 times. In addition, the dynamic range has been improved to 120 dB (RBW: 1 kHz) while the weight of the analyzer has been dramatically reduced. Compatibility has been maintained between PTA and GPIB software commands, maintaining any current investment in PTA software.
