描述
PLC的输入与输出最好采用分开走线，开关量与模拟量也要分开敷设。模拟量信号的传送应采用屏蔽线，屏蔽层应一端或两端接地，接地电阻电阻，物质对电流的阻碍作用就叫该物质的电阻。电阻小的物质称为电导体，简称导体。电阻大的物质称为电绝缘体，简称绝缘体。应小于屏蔽层电阻的1／10。
Agilent 8168A Tunable Laser Source 1480-1570nm w 022
Agilent 81651A Fabry Perot Laser 1550 nm
Agilent HP 2090-0210 HP 2090-0210 Color Replacement CRT
GNB EPX16 ,EPX100, EPX000 and 3 EPX300
Hendry 16176-02R+03 Fuse Power Panel
TEKTRONIX ST112 Sonet Transmission Test Set w opts
ILX Lightwave LDT-5910 Temperature Controller
TEKTRONIX SJ300E SONET/SDH JITTER & WANDER ANALYZER Opt
Exfo BRT-320A Optical reflection meter
HP Agilent 35665A Dynamic Signal Analyzer with opt. 1D4
Agilent 3562A 2ch. 102Khz Dynamic Signal Analyzer
