描述
在梯形图中,要用大量的输入触点符号。设计员应搞清输入信号与“1”和“0”状态的关系。若外部信号触点是常开触点,当触点动作时(即闭合),则输入信号为“1”,若信号触点是常闭触点,当触点动作时(即打开),则输入信号为“0”
TEKTRONIX TDS744A Digitizing Oscilloscope w opts.
LeCroy 9384AL Oscilloscope 1GHz,4GSa/s,4ch
Tektronix Model 7854 4 Channel Oscilloscope. With Opt.
WaveSplitter 2×2 C-band Fused Fiber Coupler
EFD Model 1500 XL Adhesive Dispenser
Ando AQ6315A Optical Spectrum Analyzer
TEKTRONIX TLS216 LOGIC ANALYZER OSCILLOSCOPE