This lock-in amplifier has the widest bandwidth available on the market. With SR844, users get exceptional performance with frequency ranging from 25kHz to 200MHz and a drift-free dynamic reserve of up to 80dB. .定放大器已在市场上可用的带宽最宽。sr844用户得卓的性与率围从25KHz到200MHz和无漂移动态储备80dB。。This amplifier is easy to operate with its ability to be programmed.放大器是易于操作的可编程力。