· Two independent filter channels
· 115 dB/octave rolloff
· 1 Hz to 100 kHz frequency range
· 0.1 dB passband ripple
· 80 dB stopband attenuation
· 6 nV/√Hz input noise
· Up to 80 dB of gain
· GPIB and RS-232 interfaces
· 115 dB/octave rolloff
· 1 Hz to 100 kHz frequency range
· 0.1 dB passband ripple
· 80 dB stopband attenuation
· 6 nV/√Hz input noise
· Up to 80 dB of gain
· GPIB and RS-232 interfaces
SR645 - Stanford Research Systems Tunable Filters
技术资料下载：
SR645手册
The SR600 series consists of three dual-channel instruments. Each instrument channel has a low-noise preamplifier, a precision high-pass or low-pass filter section and an output amplifier. The filters are 8-pole, 6-zero elliptic-type with 115 dB per octave rolloff, 0.1 dB of passband ripple and 80 dB stopband attenuation. Cutoff frequencies can be set between 1 Hz and 100 kHz making the SR600 series ideal for applications including anti-aliasing, audio analysis and general frequency-domain signal conditioning
