描述
PLC是一种专用计算机它的结构形式与微机基本相同，由中央处理单元CPU/存储器、输入输出I/O模块及编程器等组成。PLC的应用分为硬件和软件部分，因此PLC常见故障也可分为软件故障和硬件故障两大类，其中硬件部分故障占到80%以上。
Tektronix TDS 620A Digital Oscilloscope 500Mhz 2GS/s
NEW Tektronix YBT1E1 T1 or E1 tester NetTek Y400 Y350C
TEKTRONIX TDS520D 500MHz DIGITAL PHOSPHOR OSCILLOSCOPE
TEKTRONIX TDS520D DIGITAL PHOSPHOR OSCILLOSCOPE + 1F 1M
TEKTRONIX TDS520D DIGITAL PHOSPHOR OSCILLOSCOPE DPO +1M
Tektronix TDS744 500Mhz 4Ch 2GSa/s Digital Oscilloscope
New LCD Display Options: 13, 1F, 1M, 2F
TEKTRONIX TM506 6-SLOT MAINFRAME PWR MDL TEST STATION
One-day shipping available
TEKTRONIX TM506 6-SLOT MAINFRAME PWR MDL TEST STATION
One-day shipping available
TEKTRONIX 1750 & 1751 WAVEFORM / VECTOR MONITOR
TEKTRONIX TDS724A TDS 724A 500MHz 1GS/s OSCILLOSCOPE
Tektronix 2430A Digital Oscilloscope
sold as-is see the description
