对于模——数和数——模这两种转换器,用户常常是较为重视前一种的性能规范。而对后一种转换器较为忽视。虽然在某些场合下,这种忽视还是允许的,但在连续输出系统中,这种对数——模转换器的忽视会造成导致在其他方面设计良好的装置毁坏的误差的危险原因。 数——模转换器(DAC)应用于连续输出系统时,考虑如下一些因素:位数的选择,无多余噪音脉冲(deglitching)电路的使用,数——模转换器中旋转限制的效应、脉冲——脉 For modulo-number and number-modulo converters, users often place more emphasis on the former performance specifications. The latter converter is more neglected. While such negligence is still acceptable on some occasions, neglect of such a log-analog converter in a continuous output system can create a dangerous source of errors that otherwise could cause well-designed device destruction. When a digital-to-analog converter (DAC) is applied to a continuous output system, consider the following factors: choice of bit number, use of no extra noise deglitching circuit, effect of rotation limit in digital-to- --pulse