R3765/3767H series is the 3.8GHz/8GHz vector network analyzer, which has newly been designed based on a concept “an optimum tool for each application”. We have fully pursued high throughput such as 0.15ms/points high-speed measurement at a res­ olution bandwidth (RBW) of 10kHz, 100dB wide dynamic-range measurement, and two-device si­ multaneous measurement with four-channel/eight-trace display. Also, we have added the program sweeping function that can freely change the resolution band­ width (RBW) and output level during sweep operation for each segment With the built-in BASIC controller, a high-speed ATE system can be easily configured with no ex­ ternal controller for processes from adjustment to inspection. <Features> (1) High throughput In the case of С type, 4 S parameters can be displayed in a screen by 0.15ms/point high-speed frequency sweeping and four-channel/eight-trace (RBW 10kHz). 0.15ms/point high-speed level sweeping. (2) Wide dynamic range 100dB wide dynamic range. Program sweeping function. For each segment, allows setting of frequency, output level, RBW and settling time. MS-DOS formatted disk By using an MS-DOS personal computer, it is possible to easily create programs and analyze data because of the disk conformed to MS-DOS format standard. Three modes of storage capacity available (DD 720KB, HD 1,2MB, HD 1.4MB).