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SS265型数字式彩色水平探鱼仪,是一种使用微型计算机新技术,将单波束探照灯式的A显示变换成为一个全方位的彩色PPI显示功能的助渔仪器。该机采用Z80为中央处理器(cpu),它指令动态随机存取存储器(RAM),步进式的显示出360度方位上的所有回波映象。并且稳定的保留在荧光屏上,直到下一个新的回波信号到来之时,旧的回波映才自行消失,取而代之的将是最新的回波信号。乍看起来,有如全电子扫描式的水平探鱼仪功能,其方框原理图如图1所示。本机还带有自动声校准波
The SS265 Digital Color Fishfinder is a fish-aid instrument that uses a new micro-computer technology to transform single-beam searchlight A displays into a full color PPI display. The machine uses the Z80 as the central processing unit (CPU), which commands dynamic random access memory (RAM) to step through to show all echo images in 360-degree orientation. And remain stable on the screen until the next new echo arrives, the old echo disappears on its own, replaced by the latest echo signal. At first glance, there is a full electronic scanning horizontal fish finder function, the block diagram shown in Figure 1. This machine also comes with automatic sound calibration wave