在市场搞了台二手示波器,型号为TEK2236A,500大洋,买回来发现时基线开机半小时后缩短,频率计显示精度达不到,通道A无显示,要求卖家退款300大洋。万用表功能正常。首先得找到此原理图及说明书,到美国官网去下载。
欣赏原装美国泰克
2236已修好,晚上再上传2236的波型图片以及万用表那些东西的参数,
昨天又倒货一台TEK2235,花了100元淘的二手坏的,这台机器不是纯原装进口,是美国在中国的上海新建(简:无电21厂)组装的.电源打不开,这是初步问题,回来一看,哇,电阻坏,别人修的时候电阻搞错了,估计是这问题,还不知道波型有没有变化,等一下也一起上图
忘记说了,过10天到货一台TEK2465-CRT的.游标读数,300M标称,实际能达350MHZ,4通道,新旧程度9.2成新,要的请联系本人.
如果你使用过泰克示波器的人,就再也不会选择国产示波器,不管是模拟,如果是数字那就还不用了,你知道其中的密码的.只是读一些数据还可以,如果时实显示这块就不行了.
100MHz带宽,双踪,衰减 5mV/div, 扫速 0.05 µs/div
The 465 Dual Trace Portable Oscilloscope is a wide-band, portable oscilloscope with a sync separator for aid in measuring various TV waveforms. The dual-channel DC to 100 MHz vertical deflection system provides calibrated deflection factors from 5 mV to 5 V/division. The bandwidth limiting switch reduces interference from signals above about 20 MHz for viewing low-frequency, low-level signals. The trigger circuits provide stable sweep triggering to beyond the bandwidth of the vertical deflection system. Separate controls are provided to select the desired mode of triggering for the A & B sweeps. The A sweep can be operated in one of three modes: automatic triggering, normal triggering, or single sweep. The horizontal deflection system has calibrated sweep rates from 0.5 S to /div. Added circuits provide amplification, selectable polarity inversion, clipping, & vertical-sync recognition with output of vertical (field-rate) triggers to Sweep A & horizontal (line-rate) triggers to the Sweep B Triggering Source switch.
我晚上拍几张图片放上来,我还想问一下,没有频率发生器,用什么可以测出这示波器 能测到100MHZ的方法。