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                SR844锁相放大器


                 

                Stanford Research Systems SR844 RF Lock-In Amplifier, 25KHz-200MHz, with Operating and Programming Reference Manual
                The SR844 is the widest bandwidth lock-in amplifier available. It provides uncompromised performance with a frequency range of 25 kHz to 200 MHz and up to 80 dB of drift-free dynamic reserve. It includes the many features, ease of operation, and programmability that you've come to expect from SRS DSP lock-in amplifiers.

                · 25 kHz to 200 MHz frequency range 
                · 80 dB dynamic reserve 
                · Time constants from 100 µs to 30 ks (6, 12, 18 or 24 dB/oct rolloff) 
                · "No Time Constant" mode (10 µs to 20 µs update rate) 
                · Auto-gain, -phase, -reserve and -offset 
                · Two 16-bit DACs and ADCs 
                · Internal or external reference 
                · GPIB and RS-232 interfaces
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