摘要
In general,the TTL/CMOS signal are suitable for short range indoor transmission,however,these signals are vulnerable to interference in complex electromagnetic environments.Commissioned by the engineering and technical department,we designed and manufactured an MMF-TTL converter.The device works with the equipment with TTL/CMOS interface,which can effectively extend the control signal transmission distance;at the same time,it can also ensure the quality of the transmitted signal to a certain extent.
