SR600 - Programmable Filters
Stanford Research Systems - SRS
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.
SR640 Two Channel Low Pass Filter
SR645 Two Channel High Pass Filter
SR650 One High, One Low Pass Filter
The filters are 8-pole, 6-zero elliptic-type with 115 dB per octave rolloff, 0.1 dB of passband ripple, and 80 dB of 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 frequency-domain signal conditioning.
Two independent filter channels.
SR645 Two Channel High Pass Filter
SR650 One High, One Low Pass Filter
The filters are 8-pole, 6-zero elliptic-type with 115 dB per octave rolloff, 0.1 dB of passband ripple, and 80 dB of 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 frequency-domain signal conditioning.
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115 dB/octave rolloff
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1 Hz to 100 kHz frequency range
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0.1 dB passband ripple
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80 dB stopband attenuation
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6 nV/√Hz input noise
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Up to 80 dB of gain
- GPIB and RS-232 interfaces
Electronic Test & Measurement 
