描述
在60MHz以上的频率，幅度已经产生了超过3dB的过冲，而到达100M左右时，过冲到最大幅度。所以如果采用地夹，测量超过60MHz的信号就会产生比较大的失真。正确的方式应该是采用接地弹簧。接地弹簧具有非常小的电感，可以大大提升探头的带宽。
Allen Bradley 1756-OB16E A Allen Bradley 16 Channel Output Module
Allen Bradley 1756-OB32/A 32 Channel 24V DC Output Module
Allen Bradley 1756-OF8 A Allen Bradley 8 Channel Analogue Output Module
Allen Bradley 1756-OW161/A 16 Channel Output Module
Allen Bradley 1761-L16BWA Allen Bradley MicroLogix 1000 PLC Brick
Allen Bradley 1761-L16BWB Micrologic 1000 Programmable Controller
Allen Bradley 1761-L32BWA Allen Bradley MicroLogix 1000 PLC Brick
Allen Bradley 1762-L40AWA MicroLogix 1200 PLC
Allen Bradley 1762-L40BWA Allen Bradley Micrologix 1200 PLC Brick
Allen Bradley 1764-24AWA Allen Bradley Micrologix 1500 Base Unit
Allen Bradley 1769-PA4 Allen Bradley Compact I/O Power Supply
Allen Bradley 1770-FE System Programmer
Allen Bradley 1770-KF2 Allen Bradley Data Highway Communication Interface
Allen Bradley 1770-KFD/A Allen Bradley DeviceNet Interface
Allen Bradley 1770-RG Report Generation Module
Allen Bradley 1770TA Allen Bradley System Programmer
Allen Bradley 1771-0N Allen Bradley 8 Channel 24VDC Output Module
Allen Bradley 1771-AF1/B Allen Bradley Stand Alone Fibre Optic Converter
Allen Bradley 1771-AL Allen Bradley I/O Adaptor Module
Allen Bradley 1771-AM1 Allen Bradley 1 Slot Input/ Output Chassis
Allen Bradley 1771-AR Allen Bradley Remote I/O Adapter Module
