If the photograph is clicked, it grows.

SR650 — high-pass/low-pass (can be cascaded for band-pass) Filter Frequency range 1Hz to 100 kHz (3-digit resolution) Type 8-pole, 6-zero elliptic Rolloff 115 dB/octave Passband ripple 0.1 dB peak to peak (typ.) Stopband attenuation 80 dB (typ.) Input Impedance 1MΩ // 15 pF Configuration Single-ended (A or B) or differential (A–B) CMRR >85 dB at 100Hz (input gain >20 dB) Coupling AC or DC Input noise 6 nV/√Hz at 1 kHz (with 60 dB input gain) Gain 0, 10, 20, 30, 40, 50, 60 dB± 0.2 dB Max. input signal 10Vpp (overload) 5Vpp (no distortion) Output Impedance <1Ω Full-scale output signal 10Vpp into >300Ω Option 01 10Vpp into 50Ω DC offset Adjustable to 0V Gain 0, 10, 20 dB± 0.5 dB Harmonic distortion <–80 dB below full scale at 100Hz (<1Vpp output) <–50 dB below full scale at 1 kHz Spurious components <–80 dB below full scale (with input source <50Ω) Channel crosstalk <–110 dB below full scale (with input source <50Ω) Phase match ±0.75° (DC to fc, typ.) General Interfaces GPIB and RS-232 standard. All instrument functions can be controlled and read through the interfaces. Stored settings Nine complete dual-channel instrument configurations may be stored in non-volatile memory. Power 45W, 100/120/220/240VAC, 50/60Hz Dimensions 15.7"×3.0"×14.0" (WHD) Weight 12 lbs