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《解析媒体矩阵(MediaMatrix)(三十七)NION的硬件系统(1)》[1]中重点介绍了NION主机的前面板及使用方法,本期中着重介绍后面板的用途和使用方法。1RS232串口在早些版本的NION主机上,RS232接口在主机的前面板上,目前新版本的RS232接口转到了后面。他使用了标准的DB9F型接口,按照基本的RS232接口要求,一般的信号传递只需3条线作为发送、接收和接地即可,其他的接点暂时不用,如图1所示。作为工业用RS232接口,通常连接长度只有15?m左右,但数据传输速率、连接线容抗大小会随着线长而变化。
“Media Matrix (37) NION’s Hardware System (1)” [1] focuses on the front panel of the NION console and how to use it. This month’s edition focuses on the purpose and use of the rear panel. 1RS232 serial port In earlier versions of the NION host, RS232 interface on the front panel of the host, the current version of the RS232 interface to the back. He uses a standard DB9F interface, according to the basic RS232 interface requirements, the general signal transmission only three lines as the sending, receiving and grounding can be, the other contacts temporarily do not have, as shown in Figure 1. As an industrial RS232 interface, the connection length is usually only about 15? M, but the data transfer rate, cable capacitance will change with the length of the cable.